Substantially zero temperature coefficient bias generator

Details Substantially zero temperature coefficient bias generator Substantially zero temperature coefficient bias generator

2007-07-24

2009-10-13

Zweizig, Jeffrey S (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S513000

Reexamination Certificate

active

07602234

ABSTRACT:
In an embodiment, a bias generator circuit comprises a first circuit and a second circuit. The first circuit includes a first input coupled to a voltage source and a first output that provides a first output current having a substantially non-zero temperature coefficient. The first circuit comprises a first transistor and a second transistor. The second circuit includes a second input that receives the first output current from the first circuit and a second output that provides a second output current. The second circuit comprises a third transistor and a fourth transistor. The second output current has a substantially zero temperature coefficient dependent on (i) a difference between an effective channel size of the first transistor and an effective channel size of the second transistor, and (ii) a difference between an effective channel size of the third transistor and an effective channel size of the fourth transistor.

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