A 0.18 mu m CMOS transimpedance amplifier with 26 dB dynamic range at 2.5 Gb/s

作者：Aznar Francisco^*; Gaberl Wolfgang; Zimmermann Horst

来源：Microelectronics Journal, 2011, 42(10): 1136-1142.

DOI：10.1016/j.mejo.2011.06.005

• CMOS analog integrated circuits
• Duty cycle distortion
• Dynamic range
• Optical receivers
• Transimpedance amplifiers

A new transimpedance amplifier (TIA) for 2.5 Gb/s optical communications fabricated in a standard 0.18 mu m CMOS process is presented. The proposed TIA is based on a conventional structure with an inverting voltage amplifier and a feedback resistor, but incorporates a new technique to enhance the input dynamic range and to prevent the TIA from saturation at high input currents. According to electrical characterization the receiver shows an optical sensitivity of -26 dB m for a BER=10(-12), assuming a responsivity of 1 A/W, and an optical power dynamic range above 26 dB. The power consumption of the core is only 10.6 mW at a single supply voltage of 1.8 V.

• 出版日期2011-10