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US 2026/0221967 A1Published application
Apparatus and method for high linearity slew enhancement on an output buffer
AssigneeAnalog Devices, Inc.
InventorMichael Brian ANDERSON
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Abstract
Aspects of the present disclosure provide for apparatuses, which may be highly linear precision output buffers, with enhanced slew rates. An apparatus in accordance with the present disclosure may comprise a first transistor, a second transistor, coupled in cascode to the first transistor, a biasing source, coupled to the second transistor, a replica device, coupled to the first transistor, and a comparator, coupled to the biasing source and the replica device, wherein a slew rate of the first transistor is controlled based on a current through the replica device.
Claims21
An apparatus comprising:
- a first transistor;
- a second transistor, coupled in cascode to the first transistor;
- a biasing source, coupled to the second transistor;
- a replica device, coupled to the first transistor;
- and
- a comparator, coupled to the biasing source and the replica device, wherein a slew rate of the first transistor is controlled based on a current through the replica device.
3 more elements
An output buffer, comprising:
- an amplifier, comprising a first transistor and a second transistor coupled in cascode, an output of the amplifier comprising an output of the output buffer;
- a current source coupled to the amplifier for biasing the amplifier;
- a replica device, coupled to the amplifier, wherein the replica device receives an input to the output buffer;
- and
- a comparator, coupled to the replica device and the current source, wherein a slew rate of the amplifier is controlled based at least on a current through the replica device.
2 more elements
Dependencies are inferred from the claim text.