Sense amplifiers including bias circuits

摘要

Sense amplifiers including bias circuits are described. Examples include bias circuits having an adjustable width transistor. A loop gain of the bias circuit may be determined in part by the adjustable width of the transistor. Examples of sense amplifiers including amplifier stages configured to bias an input/output node to a reference voltage.

主权项

1. A sense amplifier, comprising
a bias circuit including an adjustable transistor, wherein the adjustable transistor includes a dimension that is adjustable, wherein the bias circuit is configured to provide a bias voltage having a magnitude that is based, at least in part, on a size of the dimension of the adjustable transistor and is configured to maintain a substantially constant loop gain; and an amplifier stage coupled to the bias circuit to receive the bias voltage and configured to bias an input-output node to a reference voltage, the amplifier stage having a loop gain controlled at least in part by the bias voltage.