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US 7,009,449 B2Granted
Adjustable gain amplifier arrangement with relaxed manufacturing constraints
AssigneeInfineon Technologies AG
InventorsGerhard Habring, Manfred Haberl, Andreas Scheiber, Hans-Peter Fuchs, Carl Stephelbauer
Life of this patent
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Abstract
An amplifier arrangement includes a variable-gain signal amplifier. A control block is used to process a control signal in order to set the gain. A trimming unit acts on the control block such that signals which are produced by the control block can be trimmed relative to one another in order to set the gain of the signal amplifier.
Claims23
An amplifier apparatus, comprising:
- a signal amplifier including a signal input for receiving a signal to be amplified, a signal output for providing an amplified signal, and at least two control connections for setting a gain of the signal amplifier;
- a control block including a control input for receiving a control signal, and including at least two output connections which are connected to the at least two control connections, the control block responsive to the control signal for producing at the output connections respective control block output signals;
- and
- a trimming unit coupled to the control block for trimming the control block output signals relative to one another.
1 more element
A transmitter apparatus, comprising:
- a signal amplifier including a signal input for receiving a signal to be amplified, a signal output for providing an amplified signal, and at least two control connections for setting a gain of the signal amplifier;
- a control block including a control input for receiving a control signal, and including at least two output connections which are connected to the at least two control connections, the control block responsive to the control signal for producing at the output connections respective control block output signals;
- a trimming unit coupled to the control block for trimming the control block output signals relative to one another;
- and
- a modulator for modulation of a data signal onto a carrier signal, the modulator having an output coupled to the signal input of the signal amplifier.
2 more elements
Dependencies are inferred from the claim text.