H03F 2203/45
Indexing scheme relating to differential amplifiers
H03F2203/45 (Indexing scheme relating to differential amplifiers) appears on 7,636 US grants and 6,798 published applications in this corpus.
Search patents in H03F- Granted patents
- 7,636
- Published applications
- 6,798
- Assignees
- 1,602
- Inventors
- 10,248
- Latest grant
- 6 Oct 2026
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|---|---|---|
| 1976 | 13 | 0 |
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| 1981 | 21 | 0 |
| 1982 | 18 | 0 |
| 1983 | 14 | 0 |
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| 1986 | 20 | 0 |
| 1987 | 26 | 0 |
| 1988 | 27 | 0 |
| 1989 | 20 | 0 |
| 1990 | 29 | 0 |
| 1991 | 21 | 0 |
| 1992 | 28 | 0 |
| 1993 | 31 | 0 |
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| 1997 | 56 | 0 |
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| 1999 | 77 | 0 |
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| 2001 | 109 | 35 |
| 2002 | 135 | 143 |
| 2003 | 181 | 165 |
| 2004 | 172 | 138 |
| 2005 | 149 | 239 |
| 2006 | 220 | 248 |
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| 2012 | 279 | 268 |
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| 2014 | 289 | 257 |
| 2015 | 250 | 298 |
| 2016 | 340 | 278 |
| 2017 | 325 | 262 |
| 2018 | 286 | 279 |
| 2019 | 378 | 366 |
| 2020 | 376 | 385 |
| 2021 | 326 | 324 |
| 2022 | 309 | 313 |
| 2023 | 247 | 292 |
| 2024 | 242 | 240 |
| 2025 | 223 | 219 |
| 2026 | 119 | 158 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03F 2203/45528The fbc comprising one or more passive resistors and being coupled betweenIndexing code832
- H03F 2203/45138Two or more differential amplifiers in ic-block form are combinedIndexing code758
- H03F 2203/45702The lc comprising two resistorsIndexing code576
- H03F 2203/45526The fbc comprising a resistor-capacitor combination and being coupled between the lcIndexing code463
- H03F 2203/45116Feedback coupled to the input of the differential amplifierIndexing code460
- H03F 2203/45512The fbc comprising one or more capacitors, not being switched capacitors, andIndexing code443
- H03F 2203/45674The lc comprising one current mirrorIndexing code370
- H03F 2203/45594The ic comprising one or more resistors, which are not biasing resistorIndexing code367
All 366 subgroupsShow fewer
- H03F 2203/45544The ic comprising one or more capacitorsIndexing code353
- H03F 2203/45318The aac comprising a cross coupling circuitIndexing code325
- H03F 2203/45212The differential amplifier being designed to have a reduced offsetIndexing code311
- H03F 2203/45466The csc being controlledIndexing code305
- H03F 2203/45631The lc comprising one or more capacitorsIndexing code289
- H03F 2203/45652The lc comprising one or more further dif amp stages, either identicalIndexing code289
- H03F 2203/45418The cmcl comprising a resistor addition circuitIndexing code283
- H03F 2203/45514The fbc comprising one or more switched capacitors, and being coupled betweenIndexing code276
- H03F 2203/45424The cmcl comprising a comparator circuitIndexing code263
- H03F 2203/45366The aac comprising multiple transistors parallel coupled at their gates onlyIndexing code260
- H03F 2203/45288Differential amplifier with circuit arrangements to enhance the transconductanceIndexing code259
- H03F 2203/45638The lc comprising one or more coilsIndexing code259
- H03F 2203/45136One differential amplifier in ic-block form being shownIndexing code256
- H03F 2203/45731The lc comprising a transformerIndexing code253
- H03F 2203/45726The lc comprising more than one switch, which are not cross coupledIndexing code250
- H03F 2203/45394The aac of the dif amp comprising fets whose sources are notIndexing code249
- H03F 2203/45352The aac comprising a combination of a plurality of transistorsIndexing code241
- H03F 2203/45644The lc comprising a cross coupling circuitIndexing code234
- H03F 2203/45616The ic comprising more than one switch, which are not cross coupledIndexing code222
- H03F 2203/45508The csc comprising a voltage generating circuit as bias circuit for theIndexing code208
- H03F 2203/45522The fbc comprising one or more potentiometersIndexing code204
- H03F 2203/45551The ic comprising one or more switched capacitorsIndexing code200
- H03F 2203/45392The aac comprising resistors in the source circuit of the aac beforeIndexing code190
- H03F 2203/45481The csc comprising only a direct connection to the supply voltage, noIndexing code187
- H03F 2203/45134The whole differential amplifier together with other coupled stages being fully differentialIndexing code181
- H03F 2203/45648The lc comprising two current sources, which are not cascode current sourcesIndexing code171
- H03F 2203/45244The differential amplifier contains one or more explicit bias circuitsIndexing code167
- H03F 2203/45534The fbc comprising multiple switches and being coupled between the lc andIndexing code167
- H03F 2203/45612The ic comprising one or more input source followers as input stagesIndexing code167
- H03F 2203/45048Calibrating and standardising a dif ampIndexing code159
- H03F 2203/45101Control of the dc level being presentIndexing code158
- H03F 2203/45008The addition of two signals being made by a resistor addition circuitIndexing code157
- H03F 2203/45028The differential amplifier amplifying transistors are folded cascode coupled transistorsIndexing code149
- H03F 2203/45396The aac comprising one or more switchesIndexing code149
- H03F 2203/45112The biasing of the differential amplifier being controlled from the input orIndexing code148
- H03F 2203/45722The lc comprising one or more source followers, as post buffer orIndexing code142
- H03F 2203/45302The common gate stage of a cascode dif amp being controlledIndexing code139
- H03F 2203/45521The fbc comprising op amp stagesIndexing code139
- H03F 2203/45151At least one resistor being added at the input of a difIndexing code137
- H03F 2203/45506The csc comprising only one switchIndexing code136
- H03F 2203/45696The lc comprising more than two resistorsIndexing code135
- H03F 2203/45248The dif amp being designed for improving the slew rateIndexing code133
- H03F 2203/45536The fbc comprising a switch and being coupled between the lc andIndexing code133
- H03F 2203/45641The lc being controlledIndexing code130
- H03F 2203/45454The csc comprising biasing means controlled by the input signalIndexing code128
- H03F 2203/45681The lc comprising offset compensating meansIndexing code125
- H03F 2203/45356The aac comprising one or more op-ampsIndexing code124
- H03F 2203/45371The aac comprising parallel coupled multiple transistors at their source and gateIndexing code124
- H03F 2203/45588The ic comprising offset compensating meansIndexing code122
- H03F 2203/45471The csc comprising one or more extra current sourcesIndexing code118
- H03F 2203/45082The common mode signal being taken or deducted from the one orIndexing code116
- H03F 2203/45156At least one capacitor being added at the input of a difIndexing code116
- H03F 2203/45591The ic comprising one or more potentiometersIndexing code116
- H03F 2203/45306The common gate stage implemented as dif amp eventually for cascode difIndexing code109
- H03F 2203/45511The feedback circuit [fbc] comprising one or more transistor stagesIndexing code108
- H03F 2203/45646The lc comprising an extra current sourceIndexing code107
- H03F 2203/45386The aac comprising one or more coils in the source circuitIndexing code103
- H03F 2203/45686The lc comprising one or more potentiometers, which are not shunting potentiometersIndexing code102
- H03F 2203/45658The lc comprising two diodes of current mirrorsIndexing code101
- H03F 2203/45166Only one input of the dif amp being used for an inputIndexing code99
- H03F 2203/45586The ic comprising offset generating meansIndexing code98
- H03F 2203/45496The csc comprising one or more extra resistorsIndexing code95
- H03F 2203/45621The ic comprising a transformer for phase splitting the input signalIndexing code95
- H03F 2203/45311The common gate stage of a cascode dif amp being implemented byIndexing code94
- H03F 2203/45562The ic comprising a cross coupling circuitIndexing code93
- H03F 2203/45024The differential amplifier amplifying transistors are cascode coupled transistorsIndexing code92
- H03F 2203/45374The aac comprising one or more discrete resistorsIndexing code92
- H03F 2203/45458The csc comprising one or more capacitorsIndexing code92
- H03F 2203/45292The aac comprising biasing means controlled by the signalIndexing code90
- H03F 2203/45504The csc comprising more than one switchIndexing code90
- H03F 2203/45601The ic comprising one or more passive resistors by feedbackIndexing code89
- H03F 2203/45704The lc comprising one or more parallel resonance circuitsIndexing code88
- H03F 2203/45342The aac comprising control means on a back gate of the aacIndexing code86
- H03F 2203/45626The lc comprising biasing means controlled by the input signalIndexing code86
- H03F 2203/45604The ic comprising a input shunting resistorIndexing code84
- H03F 2203/45464The csc comprising one or more coilsIndexing code79
- H03F 2203/45022One or more added resistors to the amplifying transistors in the differentialIndexing code78
- H03F 2203/45548The ic comprising one or more capacitors as shunts to earth orIndexing code78
- H03F 2203/45296The aac comprising one or more discrete capacitive elementsIndexing code74
- H03F 2203/45354The aac comprising offset meansIndexing code74
- H03F 2203/45651The lc comprising two cascode current sourcesIndexing code74
- H03F 2203/45051Two or more differential amplifiers cascade coupledIndexing code72
- H03F 2203/45634The lc comprising one or more switched capacitorsIndexing code72
- H03F 2203/45728The lc comprising one switchIndexing code71
- H03F 2203/45264The dif amp comprising frequency or phase stabilisation meansIndexing code70
- H03F 2203/45596The ic comprising one or more biasing resistorsIndexing code70
- H03F 2203/45682The lc comprising one or more op-ampsIndexing code70
- H03F 2203/45701The lc comprising one resistorIndexing code70
- H03F 2203/45398The aac comprising a voltage generating circuit as bias circuit for theIndexing code69
- H03F 2203/45618The ic comprising only one switchIndexing code67
- H03F 2203/45554The ic comprising one or more coilsIndexing code66
- H03F 2203/45676The lc comprising one cascode current mirrorIndexing code65
- H03F 2203/45074A comparator circuit compares the common mode signal to a reference beforeIndexing code64
- H03F 2203/45154The bias at the input of the amplifying transistors being controlledIndexing code63
- H03F 2203/45574The ic comprising four or more input leads connected to four orIndexing code63
- H03F 2203/45362The aac comprising multiple transistors parallel coupled at their gates and drainsIndexing code62
- H03F 2203/45364The aac comprising multiple transistors parallel coupled at their gates and sourcesIndexing code62
- H03F 2203/45332The aac comprising one or more capacitors as feedback circuit elementsIndexing code61
- H03F 2203/45492The csc being a pi circuit and the resistor being implemented byIndexing code61
- H03F 2203/45476The csc comprising a mirror circuitIndexing code60
- H03F 2203/45494The csc comprising one or more potentiometersIndexing code60
- H03F 2203/45654The lc comprising one or more extra diodes not belonging to mirrorsIndexing code60
- H03F 2203/45026One or more current sources are added to the amplifying transistors inIndexing code58
- H03F 2203/45488The csc being a pi circuit and a capacitor being used atIndexing code58
- H03F 2203/45632The lc comprising one or more capacitors coupled to the lc byIndexing code58
- H03F 2203/45188The differential amplifier contains one or more current sources in the loadIndexing code57
- H03F 2203/45286The temperature dependence of a differential amplifier being controlledIndexing code56
- H03F 2203/45431The cmcl output control signal being a current signalIndexing code56
- H03F 2203/45316The aac comprising one or more discrete inductive elements or coilsIndexing code55
- H03F 2203/45576The ic comprising input impedance adapting or controlling meansIndexing code55
- H03F 2203/45434The cmcl output control signal being a voltage signalIndexing code53
- H03F 2203/45732The lc comprising a voltage generating circuitIndexing code53
- H03F 2203/45228A transformer being added at the output or the load circuit ofIndexing code52
- H03F 2203/45642The lc, and possibly also cascaded stages following it, being controlled byIndexing code52
- H03F 2203/45546The ic comprising one or more capacitors feedback coupled to the icIndexing code50
- H03F 2203/45712The lc comprising a capacitor as shuntIndexing code49
- H03F 2203/45406The cmcl comprising a common source node of a long tail fetIndexing code48
- H03F 2203/45224One output of the differential amplifier being taken into considerationIndexing code47
- H03F 2203/45518The fbc comprising one or more diodes and being coupled between theIndexing code47
- H03F 2203/45336The aac comprising one or more resistors as feedback circuit elementsIndexing code46
- H03F 2203/45018The differential amplifier amplifying transistors have added cross couplingsIndexing code45
- H03F 2203/45301There are multiple cascaded folded or not folded common gate stages ofIndexing code44
- H03F 2203/45614The ic comprising two cross coupled switchesIndexing code44
- H03F 2203/45482The csc comprising offset meansIndexing code43
- H03F 2203/45524The fbc comprising one or more active resistors and being coupled betweenIndexing code43
- H03F 2203/45091Two complementary type differential amplifiers are paralleledIndexing code42
- H03F 2203/45592The ic comprising one or more buffer stages other than emitter orIndexing code42
- H03F 2203/45078The common mode signal being taken or deducted from the one orIndexing code41
- H03F 2203/45402The cmcl comprising a buffered addition circuit, i.e. the signals are bufferedIndexing code41
- H03F 2203/45622The ic comprising a voltage generating circuitIndexing code41
- H03F 2203/45636The lc comprising clamping meansIndexing code41
- H03F 2203/45114The differential amplifier contains another differential amplifier in its feedback circuitIndexing code40
- H03F 2203/45684The lc comprising one or more buffers or driving stages not beingIndexing code40
- H03F 2203/45031The differential amplifier amplifying transistors are compositions of multiple transistorsIndexing code39
- H03F 2203/45044One or more switches are opened or closed to balance the difIndexing code39
- H03F 2203/45202The differential amplifier contains only resistors in the loadIndexing code39
- H03F 2203/45564The ic comprising one or more extra current sourcesIndexing code39
- H03F 2203/45174The application of the differential amplifier being in an integrator circuitIndexing code38
- H03F 2203/45552The ic comprising clamping meansIndexing code38
- H03F 2203/45236Two dif amps realised in mos or jfet technology, one of themIndexing code37
- H03F 2203/45566The ic comprising one or more dif stages in cascade with theIndexing code37
- H03F 2203/45711The lc comprising two anti-phase controlled sepp circuits as output stagesIndexing code37
- H03F 2203/45421The cmcl comprising a switched capacitor addition circuitIndexing code36
- H03F 2203/45456The csc comprising bias stabilisation meansIndexing code36
- H03F 2203/45698The lc comprising one or more resistors coupled to the lc byIndexing code36
- H03F 2203/45664The lc comprising one or more cascaded inverter stages as output stageIndexing code35
- H03F 2203/45171The input signal being switched to the one or more input terminalsIndexing code34
- H03F 2203/45221The output signal being taken from the two complementary outputs of theIndexing code34
- H03F 2203/45344At least one of the aac sub-circuits being a current mirrorIndexing code34
- H03F 2203/45498The csc comprising only resistorsIndexing code34
- H03F 2203/45541The ic comprising dynamic biasing means, i.e. controlled by the input signalIndexing code34
- H03F 2203/45691The lc comprising one or more transistors as active loading resistorsIndexing code34
- H03F 2203/45222The differential amplifier output being directly controlled by a feedback or feedforwardIndexing code33
- H03F 2203/45304The common gate stage of a bifet cascode dif amp being implementedIndexing code33
- H03F 2203/45462The csc comprising a cascode circuitIndexing code33
- H03F 2203/45568The ic comprising one or more diodes as shunt to the inputIndexing code33
- H03F 2203/45694The lc comprising more than one shunting resistorIndexing code33
- H03F 2203/45724The lc comprising two cross coupled switchesIndexing code33
- H03F 2203/45361The aac comprising multiple transistors parallel coupled at their drains onlyIndexing code32
- H03F 2203/45404The cmcl comprising capacitors containing, not in parallel with the resistors, anIndexing code32
- H03F 2203/45692The lc comprising one or more resistors in series with a capacitorIndexing code32
- H03F 2203/45628The lc comprising bias stabilisation meansIndexing code31
- H03F 2203/45118At least one reactive element being added to at least one feedbackIndexing code30
- H03F 2203/45298The aac comprising one or more combinations of discrete capacitor and resistorIndexing code30
- H03F 2203/45538The ic comprising balancing meansIndexing code30
- H03F 2203/45088The resulting deducted common mode signal being added to or controls theIndexing code29
- H03F 2203/45172A transformer being added at the input of the dif ampIndexing code29
- H03F 2203/45258Resistors are added in the source circuit of the amplifying fets ofIndexing code29
- H03F 2203/45571The ic comprising two diodesIndexing code28
- H03F 2203/45656The lc comprising one diode of a current mirror, i.e. forming anIndexing code28
- H03F 2203/45034One or more added reactive elements, capacitive or inductive elements, to theIndexing code27
- H03F 2203/45322One or more current sources are added to the aacIndexing code26
- H03F 2203/45052The cascode stage of the cascode differential amplifier being controlled by aIndexing code25
- H03F 2203/45084The common mode signal circuit comprising one or more inductive or capacitiveIndexing code25
- H03F 2203/45201The differential amplifier contains one or more reactive elements, i.e. capacitive orIndexing code25
- H03F 2203/45542The ic comprising bias stabilisation meansIndexing code25
- H03F 2203/45208The dif amp being of the long tail pair type, one currentIndexing code24
- H03F 2203/45372The aac comprising one or more potentiometersIndexing code24
- H03F 2203/45561The ic being controlledIndexing code24
- H03F 2203/45624The lc comprising balancing meansIndexing code24
- H03F 2203/45662The lc comprising inductive coupled loading elementsIndexing code24
- H03F 2203/45178The differential amplifier contains one or more extra resistors in the activeIndexing code23
- H03F 2203/45246The dif amp being biased in the subthreshold regionIndexing code23
- H03F 2203/45036The differential amplifier amplifying transistors are single transistorsIndexing code22
- H03F 2203/45066The resulting deducted common mode signal being added at the one orIndexing code22
- H03F 2203/45291The active amplifying circuit [aac] comprising balancing meansIndexing code22
- H03F 2203/45461The csc comprising one or more switched capacitorsIndexing code22
- H03F 2203/45668The lc comprising a level shifter circuit, which does not comprise diodesIndexing code22
- H03F 2203/45054The cascode stage of the cascode dif amp being a current mirrorIndexing code21
- H03F 2203/45152Balancing means being added at the input of a dif amp toIndexing code21
- H03F 2203/45176A cross coupling circuitIndexing code21
- H03F 2203/45182The differential amplifier contains one or more cascode current mirrors in theIndexing code21
- H03F 2203/45326The aac comprising one or more extra diodesIndexing code21
- H03F 2203/45341The aac comprising controlled floating gatesIndexing code21
- H03F 2203/45384The aac comprising common gate stages in the source circuit of theIndexing code21
- H03F 2203/45438The cmcl uses digital signalsIndexing code21
- H03F 2203/45688The lc comprising one or more shunting potentiometersIndexing code21
- H03F 2203/45408The cmcl comprising a short circuited differential output of a dif ampIndexing code20
- H03F 2203/45678The lc comprising offset generating meansIndexing code20
- H03F 2203/45281One sepp output stage being added to the differential amplifierIndexing code19
- H03F 2203/45422The cmcl comprising one or more capacitors not as integrating capacitorIndexing code19
- H03F 2203/45718The lc comprising a resistor as shuntIndexing code19
- H03F 2203/45012The addition of two signals being made in a switched capacitor circuitIndexing code18
- H03F 2203/45032The differential amplifier amplifying transistors are multiple paralleled transistorsIndexing code18
- H03F 2203/45076The resulting deducted common mode signal being added to or controls theIndexing code18
- H03F 2203/45168A dif amp being used as input stage to one or moreIndexing code18
- H03F 2203/45216A cross coupling circuit being added at the output terminals of theIndexing code18
- H03F 2203/45068The resulting deducted common mode signal being added at the one orIndexing code17
- H03F 2203/45081The common mode signal being level shifted before using it for controllingIndexing code17
- H03F 2203/45124The folded cascode stage of the folded cascode dif amp being aIndexing code17
- H03F 2203/45206One or two switches are coupled in the loading circuit of theIndexing code17
- H03F 2203/45274Level shifting stages are added to the differential amplifier at a positionIndexing code17
- H03F 2203/45294The aac comprising biasing means to stabilise itselfIndexing code17
- H03F 2203/45428The cmcl comprising a comparator circuit using a four inputs dif ampIndexing code17
- H03F 2203/45441The cmcl comprising an integrating circuitIndexing code17
- H03F 2203/45038One or more current sources are added or changed as balancing meansIndexing code16
- H03F 2203/45072The common mode voltage or current signal being added to the tailIndexing code16
- H03F 2203/45358The aac comprising multiple transistors parallel coupled at their sources and drainsIndexing code16
- H03F 2203/45391The aac comprising potentiometers in the source circuit of the aac beforeIndexing code16
- H03F 2203/45401The common mode controlling loop [cmcl] comprising a transistor resistor addition circuitIndexing code16
- H03F 2203/45472The csc comprising one or more diodesIndexing code16
- H03F 2203/45478The csc comprising a cascode mirror circuitIndexing code16
- H03F 2203/45706The lc comprising one or more series resonance circuitsIndexing code16
- H03F 2203/45096The difference of two signals being made byIndexing code15
- H03F 2203/45446There are two or more cmclsIndexing code15
- H03F 2203/45468The csc comprising a cross coupling circuitIndexing code15
- H03F 2203/45581The ic comprising one or more resistors as level shiftersIndexing code15
- H03F 2203/45671The lc comprising one or more diodes as level shifterIndexing code15
- H03F 2203/45708The lc comprising one sepp circuit as output stageIndexing code15
- H03F 2203/45021One or more added diodes to the amplifying transistors in the differentialIndexing code14
- H03F 2203/45042One or more resistors are added or changed as balancing to reduceIndexing code14
- H03F 2203/45094The dif amp being realized by coupling the emitters respectively sources ofIndexing code14
- H03F 2203/45144At least one follower being added at the input of a difIndexing code14
- H03F 2203/45241Two dif amps realised in mos or jfet technology, the dif ampsIndexing code14
- H03F 2203/45251The dif amp has a cross coupling circuit in the source circuitIndexing code14
- H03F 2203/45278Two sepp stages are added to the differential amplifier, the outputs ofIndexing code14
- H03F 2203/45308The common gate stage of a cascode dif amp being implemented asIndexing code14
- H03F 2203/45484The csc comprising one or more op-ampsIndexing code14
- H03F 2203/45486The csc comprising two or more paralleled transistors as current sourceIndexing code14
- H03F 2203/45578The ic comprising one or more diodes as level shiftersIndexing code14
- H03F 2203/45056One or both transistors of the cascode stage of a differential amplifierIndexing code13
- H03F 2203/45146At least one op amp being added at the input of aIndexing code13
- H03F 2203/45192The differential amplifier contains current mirrors comprising diodes which act as aIndexing code13
- H03F 2203/45214Offset in a differential amplifier being reduced by control of the substrateIndexing code13
- H03F 2203/45444The cmcl comprising a sample and hold circuitIndexing code13
- H03F 2203/45006The addition of two signals being made by two emitter or sourceIndexing code12
- H03F 2203/45014The addition of two signals being made in the tail circuit ofIndexing code12
- H03F 2203/45061The common mode reference signal being taken or deducted from the oneIndexing code12
- H03F 2203/45141A cross coupled pair of transistors being added in the input circuitIndexing code12
- H03F 2203/45186The differential amplifier contains clamping components in the load circuitIndexing code12
- H03F 2203/45256One or more reactive elements are added in the source circuit ofIndexing code12
- H03F 2203/45314The aac comprising clamping meansIndexing code12
- H03F 2203/45338The aac comprising one or more series circuits of a resistor andIndexing code12
- H03F 2203/45388The aac comprising diodes in the source circuit of the aac beforeIndexing code12
- H03F 2203/45584The ic comprising extra differentially coupled transistors for controlling purposes onlyIndexing code12
- H03F 2203/45598The ic comprising an input shunting circuit comprising a resistor and aIndexing code12
- H03F 2203/45611The ic comprising only one input signal connection lead for one phaseIndexing code12
- H03F 2203/45661The lc comprising one or more controlled floating gatesIndexing code12
- H03F 2203/45002The addition of two signals being made by addition of two currentsIndexing code11
- H03F 2203/45126One or both transistors of the folded cascode stage of a foldedIndexing code11
- H03F 2203/45226The output signal being switched taken from the one or more outputIndexing code11
- H03F 2203/45324The aac comprising a darlington transistor circuitIndexing code11
- H03F 2203/45346The aac comprising one or more fets with multiple drainsIndexing code11
- H03F 2203/45368The aac comprising multiple transistors parallel coupled at their sources onlyIndexing code11
- H03F 2203/45376The aac comprising one or more discrete resistors as shunts between collectorsIndexing code11
- H03F 2203/45426The cmcl comprising a comparator circuit with extra buffering means before comparisonIndexing code11
- H03F 2203/45516The fbc comprising a coil and being coupled between the lc andIndexing code11
- H03F 2203/45531The fbc comprising a parallel resonance circuit and being coupled between theIndexing code11
- H03F 2203/45666The lc comprising two anti-phase controlled inverter circuits as output stagesIndexing code11
- H03F 2203/45714The lc comprising a coil as shuntIndexing code11
- H03F 2203/45121A floating gate element being part of a dif ampIndexing code10
- H03F 2203/45232Two dif amps of the folded cascode type are paralleled at theirIndexing code10
- H03F 2203/45328The aac comprising one diode coupled aac-transistor in a follower combination withIndexing code10
- H03F 2203/45451The csc comprising an addition circuit made by added current sourcesIndexing code10
- H03F 2203/45058The cascode stage of the differential amplifier comprising a reactive elementIndexing code9
- H03F 2203/45111Two dif amps of the same type are used one dif ampIndexing code9
- H03F 2203/45218Diode clamping means are present at the output of a differential amplifierIndexing code9
- H03F 2203/45382The aac comprising common gate stages in the source circuit of theIndexing code9
- H03F 2203/45442The cmcl comprising multiple loops for the same stage or for differentIndexing code9
- H03F 2203/45474The csc comprising controlled one or more floating gatesIndexing code9
- H03F 2203/45491The csc being a pi circuit and the resistor being implemented byIndexing code9
- H03F 2203/45608The ic comprising one or more series resonance circuitsIndexing code9
- H03F 2203/45142At least one diode being added at the input of a difIndexing code8
- H03F 2203/45276An op amp as stage being coupled to the output of aIndexing code8
- H03F 2203/45432The cmcl output control signal being a current signal and being bufferedIndexing code8
- H03F 2203/45004The addition of two signals being made by addition of two currentsIndexing code7
- H03F 2203/45108A diode being used as level shifter between stages or in aIndexing code7
- H03F 2203/45122The folded cascode stage of the folded cascode differential amplifier being controlledIndexing code7
- H03F 2203/45148At least one reactive element being added at the input of aIndexing code7
- H03F 2203/45158One or more diodes coupled at the inputs of a dif ampIndexing code7
- H03F 2203/45556The ic comprising a common gate stage as input stage to theIndexing code7
- H03F 2203/45602The ic comprising one or more active resistors by feedbackIndexing code7
- H03F 2203/45672The lc comprising one or more resistors as level shifterIndexing code7
- H03F 2203/45716The lc comprising a rc-series circuit as shuntIndexing code7
- H03F 2203/45071The resulting deducted common mode signal being added at the substrate orIndexing code6
- H03F 2203/45086The common mode signal being taken or deducted from the tail circuitIndexing code6
- H03F 2203/45184The differential amplifier has one or more cascode current sources in theIndexing code6
- H03F 2203/45191One or more diodes not belonging to a current mirror as loadsIndexing code6
- H03F 2203/45194At least one active load circuit of the two load circuits inIndexing code6
- H03F 2203/45268A common gate stage being coupled at the one or more outputsIndexing code6
- H03F 2203/45271The output current being reduced by a transistor which being controlled byIndexing code6
- H03F 2203/45284Sensing the temperature dependence by a temperature dependant sensorIndexing code6
- H03F 2203/45416The cmcl comprising no addition of the dif signals to produce aIndexing code6
- H03F 2203/45501The csc comprising a l-c parallel resonance circuitIndexing code6
- H03F 2203/45532The fbc comprising a series resonance circuit and being coupled between theIndexing code6
- H03F 2203/45231Two dif amps of the cascode type are paralleled at their inputIndexing code5
- H03F 2203/45312There being only one common gate stage of a cascode dif ampIndexing code5
- H03F 2203/45381The aac comprising multiple transistors coupled in shuntIndexing code5
- H03F 2203/45414The cmcl comprising a current mirror addition circuitIndexing code5
- H03F 2203/45436The cmcl output control signal being a voltage signal and being bufferedIndexing code5
- H03F 2203/45558The ic being coupled at the sources of the source coupled pairIndexing code5
- H03F 2203/45582The ic comprising one or more voltage sources as level shiftersIndexing code5
- H03F 2203/45606The ic comprising one or more parallel resonance circuitsIndexing code5
- H03F 2203/45721The lc comprising only an output circuit for one phase of theIndexing code5
- H03F 2203/45102A diode being used as clamping element at the input of theIndexing code4
- H03F 2203/45106A diode being used as clamping element at the output of theIndexing code4
- H03F 2203/45128The folded cascode stage of the folded cascode dif amp contains aIndexing code4
- H03F 2203/45132A source follower using multiple single follower stages cascaded in a composedIndexing code4
- H03F 2203/45211The amplifying transistors have multiple collectors with a cross couplingIndexing code4
- H03F 2203/45272The output current being increased by a transistor which being controlled byIndexing code4
- H03F 2203/45331The aac comprising one or more diodes coupled as a shunt betweenIndexing code4
- H03F 2203/45502The csc comprising a l-c series resonance circuitIndexing code4
- H03F 2203/45062The common mode signalIndexing code3
- H03F 2203/45098Two current mirrors coupled in a subtracting configurationIndexing code3
- H03F 2203/45161One or more diodes coupled at the inputs of a dif ampIndexing code3
- H03F 2203/45181Compensation of unbalanced loading in dif ampsIndexing code3
- H03F 2203/45198A parallel resonance circuit being added in the one or more loadIndexing code3
- H03F 2203/45242Two dif amps are paralleled at their inputs, the dif amps beingIndexing code3
- H03F 2203/45266The stage cascaded to the dif amp being an asymmetrical follower stageIndexing code3
- H03F 2203/45334The aac comprising one or more dif amps as feedback circuit elementsIndexing code3
- H03F 2203/45351The aac comprising one or more fets with multiple sourcesIndexing code3
- H03F 2203/45378The aac comprising saturation or cutoff avoiding meansIndexing code3
- H03F 2203/45448The common source circuit [csc] comprising an addition circuit made by mirrorsIndexing code3
- H03F 2203/45572The ic comprising one or more zener diodes to the input leadsIndexing code3
- H03F 2203/45011The addition of two signals being made in a source degeneration circuitIndexing code2
- H03F 2203/45041Fuses are blown to balance the dif amp to reduce the offsetIndexing code2
- H03F 2203/45064The resulting deducted common mode signal being added to the folding circuitIndexing code2
- H03F 2203/45162A parallel resonance circuit being added in the one or more inputIndexing code2
- H03F 2203/45238Two dif amps realised in fet technology, the dif amps being eitherIndexing code2
- H03F 2203/45282The differential amplifier being coupled to a symmetrical follower output stageIndexing code2
- H03F 2203/45348The aac comprising one or more fets with multiple gatesIndexing code2
- H03F 2203/45411The cmcl comprising a diode addition circuitIndexing code2
- H03F 2203/45016The addition of two signals being made by paralleling two triode biasedIndexing code1
- H03F 2203/45046The base current of the amplifying transistors of a dif amp beingIndexing code1
- H03F 2203/45092Two current sources bias one set of two common base transistors cascadedIndexing code1
- H03F 2203/45104A diode being used as clamping element at the loading circuit ofIndexing code1
- H03F 2203/45204A series resonance circuit being added in the one or more loadIndexing code1
- H03F 2203/45252Diodes are added in the source circuit of the amplifying fets ofIndexing code1
- H03F 2203/45254A parallel resonance circuit being added in the one or more sourceIndexing code1
- H03F 2203/45261A series resonance circuit being added in the one or more sourceIndexing code1
- H03F 2203/45262The two amplifying fets, amplifying two complementary input signals, are not sourceIndexing code1
- H03F 2203/45321The common source stage of a bifet cascode dif amp being implementedIndexing code1
- H03F 2203/45412The cmcl comprising a folding circuit as addition circuitIndexing code1
- H03F 2203/45131A follower being added between the dif amp and other explicit stagesIndexing code0
- H03F 2203/45164A series resonance circuit being added in the one or more inputIndexing code0
- H03F 2203/45196A differential amplifier with one or more parallel coupled lc-circuits as loadIndexing code0
- H03F 2203/45234Two dif amps, one of them being of the cascade type andIndexing code0
- H03F 2203/45452The csc comprising balancing meansIndexing code0
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Most cited
By later US patents
- CMOS Operational amplifier225US 4,554,515 AAT&T Laboratories · 1985
- Operational amplifier apparatus211US 5,777,515 AMatsushita Electric Industrial Co., Ltd. · 1998
- Capacitor compensation in miller compensated circuits200US 6,788,146 B2Texas Instruments Incorporated · 2004
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