Patent ID: 9748908
Date: 2017-08-29
CPC Classifications: H03F

Claim:
1. A trans-impedance amplifier, comprising: a first-stage TCA having an input and an output, wherein the input of the first-stage TCA is electrically connected to an input current source to receive a first input signal, and the output of the first-stage TCA outputs a first output signal; a second-stage TCA having an input and an output wherein the input of the second-stage TCA is electrically connected to the output of the first-stage TCA to receive the first output signal, and the output of the second-stage TCA outputs a second output signal; a third-stage amplifier having an input and an output wherein input of the third-stage amplifier is electrically connected to the output of the second-stage TCA to receive the second output signal, and the output of the third-stage amplifier outputs a third output signal; a feedback circuit, wherein one end of the feedback circuit is electrically connected to the input of the first-stage TCA, and the other end of the feedback circuit is electrically connected to the output of the third-stage amplifier to stabilize the third output signal; wherein the third-stage amplifier comprises: wherein the third-stage amplifier comprises: