sebulli

Low noise high speed photo amplifier

photo amplifier

Gain 1. stage: 1.000.000 µV/µA
Gain 2. stage: x30
Bandwidth: 1MHz.

photo amplifier

Amplifier for short light pulses. Supresses the DC level to detect weak light pulsed.

photo amplifier

Mounted on a bread board.

Photo Amplifier Low Noise
Photo Amplifier Low Noise

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.


Circuit diagram as PDF