Peak detector with extended range

摘要

According to one embodiment, a peak detector having extended dynamic range comprises a first differential output coupled to a supply voltage of the peak detector by a first load and coupled to ground by first and second switching devices, and a second differential output coupled to the supply voltage by a second load and coupled to ground by third and fourth switching devices. The control terminals of the first, second, third, and fourth switching devices receive a common bias voltage, and the respective first and second control terminals are configured as differential inputs of the peak detector. In some embodiments, corresponding first power terminals of the first and second switching devices share a first common node further shared by the first differential output, and corresponding first power terminals of the third and fourth switching devices share a second common node further shared by the second differential output.

主权项

1. A peak detector comprising:
a first differential output coupled to a supply voltage of said peak detector by a first load and coupled to ground by first and second switching devices; a second differential output coupled to said supply voltage by a second load and coupled to ground by third and fourth switching devices; wherein respective control terminals of said first, second, third, and fourth switching devices receive a common bias voltage; wherein said respective control terminals of said first and second switching devices are coupled to a first differential input and a second differential input.