Wide Common Mode Range Sense Amplifier

摘要

A device for comparing voltage levels of a pair of input signals is presented. The device may include a pre-amp circuit and a differential amplifier. The pre-amp circuit may be configured to receive a first input signal and a second input signal, adjust a voltage level of each of the pair of input signals, and assert a control signal after a pre-determined period of time from the assertion of an enable signal. The differential amplifier may be configured to amplify a voltage difference between the first input signal and the second input signal dependent upon the adjusted voltage level of the pair of input signals in response to the assertion of the control signal.

主权项

1. An apparatus, comprising:
a pre-amp circuit configured to:
receive a first input signal and a second input signal;adjust a voltage level of the first input signal and a voltage level of the second input signal; andassert a control signal after a pre-determined period of time from an assertion of an enable signal; and a differential amplifier configured to:
amplify a voltage difference between the first input signal and the second input signal dependent upon the adjusted voltage level of the first input signal and the adjusted voltage level of the second input signal in response to the assertion of the control signal; andgenerate at least one output signal dependent upon the amplified voltage difference.