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Differential optocoupler amplifier with low noise, low power and balanced output

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2 Author(s)
D. V. Camin ; Dipt. di Fisica, Ist. Nazionale di Fisica Nucl., Milan, Italy ; G. Pessina

An optocoupler with differential input and balanced output was realized to make galvanic decoupling of a particle detector located in a high common mode disturbance environment. The circuit configuration incorporates a true differential optocoupled feedback, with low bias current in LEDs and photodiodes. The present circuit improves by a factor two the dynamic range of a previous solution. Large Common Mode (CMRR) and Power Supply (PSRR) Rejection Ratio, low crossover distortion, high dynamic range, low noise and power dissipation have been achieved

Published in:

IEEE Transactions on Nuclear Science  (Volume:47 ,  Issue: 6 )