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Transimpedance amplifier with 120 dB dynamic range

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2 Author(s)
Micusik, D. ; Inst. of Electr. Meas. & Circuit Design, Vienna ; Zimmermann, H.

A transimpedance amplifier (TIA) with compression of the input current is presented. The proposed TIA has two regions of operation: a linear one for small input currents and one with compression for high currents, which would otherwise saturate the TIA. The measured -3 dB bandwidth is 102 MHz, the equivalent RMS input current noise is 20.2 nA and the maximal current overdrive is 20.5 mA, leading to a dynamic range at the input of 120 dB

Published in:

Electronics Letters  (Volume:43 ,  Issue: 3 )