Patent ID: 6366128
Filing Date: 2002-04-02
Classification: H03K,H04L

Abstract:
A differential amplifier comprising:a. a first differential-amplifier stage having: i. first and second differential input terminals adapted to receive a differential input signal; and ii. first and second differential output terminals; b. a second differential-amplifier stage having: i. third and fourth differential input terminals adapted to receive the differential input signal; ii. third and fourth differential output terminals connected to the first and second differential output terminals; and iii. an amplifier-enable terminal; and c. a programmable memory cell capable of maintaining a programmed state and a deprogrammed state, the memory cell having a memory-cell output terminal connected to the amplifier-enable terminal; d. wherein the second differential amplifier stage amplifies the input signal when the memory cell is in the programmed state and does not amplify the input signal when the memory cell is in the deprogrammed state.