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A 1 GHz CMOS transimpedance amplifier for chip-to-chip optical interconnects

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3 Author(s)
Haralabidis, N. ; Inst. of Microelectron. NCSR Demokritos, Athens, Greece ; Katsafouros, S. ; Halkias, G.

A CMOS transimpedance amplifier (TIA) has been designed and tested for cost effective chip-to-chip optical interconnects. The amplifier is based on a foundry standard CMOS technology which features 0.8 μm drawn channel length, double-poly capacitors and poly-Si resistors. Measurements showed a transimpedance gain of 48 dBΩ over a -3 dB bandwidth of DC-1 GHz and a power consumption of 80 mW when biased at +5 V and AC coupled to the load. The biasing circuitry consumes an additional 52 mW. The mean input referred noise current density was calculated to be 7.4pA/√Hz, which results in an input optical sensitivity of -25.7 dBm for a BER of 10-9. The experimental results verify to a great extent the expected transmission rate of up to 1.8 Gbps

Published in:

Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on  (Volume:5 )

Date of Conference:

2000