Invention Grant
US07688141B1 Multi-amplifier circuit 有权
多功放电路

Multi-amplifier circuit
Abstract:
A transimpedance amplifier (TIA) includes N cascaded pairs of transconductance amplifiers, where N is an integer greater than 1. Each one of the N cascaded pairs includes a first transconductance amplifier having an input and an output, and a second transconductance amplifier having an input that communicates with the output of the first transconductance amplifier and an output. Each one of the N cascaded pairs includes a first resistance having first and second ends that communicate with the input and the output of the second transconductance amplifier, respectively. The TIA further includes a second resistance having a first end that communicates with the input of the first transconductance amplifier of a first one of the N cascaded pairs, and a second end that communicates with the output of the second transconductance amplifier of a last one of the N cascaded pairs.
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