Asymmetric comparator for low power applications

Details Asymmetric comparator for low power applications Asymmetric comparator for low power applications

2006-05-23

2006-05-23

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S065000, C327S067000, C327S068000

Reexamination Certificate

active

07049857

ABSTRACT:
A method and structure for comparing an input signal to a reference signal using a comparator comprises a circuit for setting a trip point of a rising edge of an input signal according to a value of an external voltage reference; and at least two transistors, in the circuit, for setting a trip point of a falling edge of an input signal, according to a width-to-length ratio of the at least two transistors. Moreover, the at least two transistors comprises a first transistor of length (Lx) and a width of (Wx); and a second transistor of length (Ly) and a width of (Wy), wherein the width-to-length ratio equals (WxLy)/(WyLx). The trip point of a falling edge of an input signal increases (decreases) by increasing (decreasing) the width-to-length ratio.

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