Gain 1. stage: 1.000.000 µV/µA
Gain 2. stage: x30
Amplifier for short light pulses. Supresses the DC level to detect weak light pulsed.
Mounted on a bread board.
Noise spectrum. After the second amplifier the noise floor is about -60dBV at 500kHz. Or about 10mVRms over the whole frequency range up to 1MHz.