Apparatus and method for testing of successful operation of transimpedance amplifiers

摘要

The present disclosure relates to an apparatus comprising at least two operational amplifiers, a first and a second current input, at least one voltage output, and at least two resistors, wherein a first current source is connectable to the first current input, and a test current source is connectable to the second current input, and wherein the first current input is connected to an inverting input of the first operational amplifier and the second current input is connected to an inverting input of the second operational amplifier, and a first feedback resistor is connected between the output and the inverting input of the first operational amplifier and a second feedback resistor is connected between the output and the inverting input of the second operational amplifier, and wherein the voltage output is connected to the outputs of the first and the second operational amplifier.

主权项

1. Apparatus comprising:
at least two operational amplifiers; a first and a second current input; at least one voltage output; and at least two feedback resistors, wherein:
a first current source is connectable to the first current input, and a test current source is connectable to the second current input, and whereinthe first current input is connected to an inverting input of the first operational amplifier andthe second current input is connected to an inverting input of the second operational amplifier, anda first feedback resistor is connected between the output and the inverting input of the first operational amplifier and a second feedback resistor is connected between the output and the inverting input of the second operational amplifier, and whereinthe at least one voltage output is connected to the outputs of the first and the second operational amplifier, and a current mirror, wherein the current mirror is connected between the second current input and the inverting input of the second operational amplifier, wherein a current mirror input of the current mirror is connected to the second current input and a current mirror output is connected to the inverting input of the second operational amplifier.