Back to results
US 2014/0191783 A1Published application
Pin driver circuit with improved swing fidelity
AssigneeAnalog Devices, Inc.
InventorChristopher C. McQuilkin
Life of this patent
Estimating the term…
Abstract
A circuit may include a controller, at least one bridge circuit, and a plurality of switches. The plurality of switches may be connected parallel to each other, each may have a switch output connected to the bridge circuit. The bridge circuit, upon receiving a current from the plurality of switches, may generate an output based on a reference voltage. The controller may generate a plurality of control signals, based on a voltage transition range, to selectively turn on the plurality of the switches in more than one combination, to supply a current to the output.
Claims20
A circuit comprising:
- a controller;
- more than one bridge circuit;
- and
- a plurality of switches, connected parallel to each other, such that each switch having a switch output connected to one of the more than one bridge circuit and each of the more than one bridge circuit are connected to the switch output of more than one of the switches;
- wherein the more than one bridge circuit each corresponding to one of a plurality of reference voltages, upon receiving a current from the plurality of switches, generates an output having a voltage transition with a voltage transition range between a first reference voltage and a second reference voltage,
- wherein the controller generates, based on the voltage transition range between the first reference voltage and a second reference voltage, a plurality of control signals to control the voltage transition of the output without changing the reference voltages, and
- wherein the controller generates the control signals to selectively turn on the plurality of switches in more than one combination, to turn off a first bridge circuit of the more than one bridge circuit and to turn on a second bridge circuit of the more than one bridge circuit, to supply a current to the output of the more than one bridge circuit.
4 more elements
A method comprising:
- generating, by a controller, based on a voltage transition range between a first reference voltage and a second reference voltage, a plurality of control signals to control a voltage transition of the output without changing the reference voltages;
- selectively turning on a plurality of switches in more than one combination, based on the plurality of control signals;
- upon receiving a current from the plurality of switches, turning off a first bridge circuit of more than one bridge circuit and turning on a second bridge circuit of the more than one bridge circuit;
- and
- generating, by the more than one bridge circuit, the output based on a reference voltage, to supply a current to the output of the more than one bridge circuit,
- wherein the plurality of switches are connected parallel to each other, such that each switch having a switch output connected to one of the more than one bridge circuit and each of the more than one bridge circuit are connected to the switch output of more than one of the switches,
- wherein the more than one bridge circuit each corresponding to one of a plurality of reference voltages, upon receiving a current from the plurality of switches, generates the output having the voltage transition with a voltage transition range between the first reference voltage and the second reference voltage.
4 more elements
A non-transitory computer readable medium, storing instructions executable by a processor to perform:
- generating, by a controller, based on a voltage transition range between a first reference voltage and a second reference voltage, a plurality of control signals to control a voltage transition of the output without changing the reference voltages;
- selectively turning on a plurality of switches in more than one combination, based on the plurality of control signals;
- upon receiving a current from the plurality of switches, turning off a first bridge circuit of more than one bridge circuit and turning on a second bridge circuit of the more than one bridge circuit;
- and
- generating, by the more than one bridge circuit, the output based on a reference voltage, to supply a current to the output of the more than one bridge circuit,
- wherein the plurality of switches are connected parallel to each other, such that each switch having a switch output connected to one of the more than one bridge circuit and each of the more than one bridge circuit are connected to the switch output of more than one of the switches,
- wherein the more than one bridge circuit each corresponding to one of a plurality of reference voltages, upon receiving a current from the plurality of switches, generates the output having the voltage transition with a voltage transition range between the first reference voltage and the second reference voltage.
4 more elements
Dependencies are inferred from the claim text.