A novel high gain, high bandwidth CMOS differential front-end for wireless optical systems

This paper describes a high performance CMOS differential input front-end, designed for optical wireless communications. The front-end achieves a 50 MHz bandwidth and a 400 K transimpedance gain (20 THz gain-bandwidth product) with the targeted input photodiode junction capacitance of 10 pF. The input dynamic range is 60 dB, obtained through a switched step gain approach, and the input referred noise is under 8.2 pA/Hz. An integrated circuit has been produced using a double poly, double metal, 0.8

• Type: Conference
• Year: 1999
• Where: ISCAS
• Authors: E. de Vasconcelos, J. L. Cura, Rui L. Aguiar, Dinis M. Santos
• Keywords: Hardware, Input Dynamic Range, Input Photodiode Junction, Input Referred Noise, ISCAS 1999