Analysis and Measurement of Intrinsic Noise in Op Amp Circuits Part XII: Photodiode Amplifier Noise (continued)
by Art Kay and Bryan Zhao, Texas Instruments Incorporated
This TechNote covers a sample calculation of the photodiode circuit from Part XI. The sample calculation uses a real world photodiode and operational amplifier (op amp). Part XI also shows the measurement results for this example circuit. In this example measurement of a post-amplifier is required to increase the noise amplitude to a level that the equipment can accurately measure.
