A folded cascade-based broadband transimpedance amplifier for optical communication systems

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• 作者：Majid Rakide ^{majid.rakideh@srttu.edu" class="auth_mail" title="E-mail the corresponding author} ; Mahmood Seifouri ; ^{mahmood.seifouri@srttu.edu" class="auth_mail" title="E-mail the corresponding author} ; Parviz Amiri ^{pamiri@srttu.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Transimpedance amplifier ; π-network ; Staggered response ; Gain ripple ; Folded Cascade amplifier
• 刊名：Microelectronics Journal
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：54
• 期：Complete
• 页码：1-8
• 全文大小：1461 K

文摘

This paper presents a high gain CMOS transimpedance amplifier (TIA) design using staggering technique to obtain high bandwidth and low gain ripple. To provide the staggered frequency response, the proposed TIA employs a π-network as a transimpedance stage along with a novel Folded Cascade-based shunt amplifier as a post amplifier stage. Simulation of the proposed TIA for 1.8 V 0.18 μm CMOS technology shows that a gain of 58 dB Ω with 1 dB Ω gain-ripple over a bandwidth of 8.1 GHz can be achieved while the whole TIA circuit consumes 38.2 mW from 1.8 V power supply. The simulated average input noise current spectral density is about $15\mathrm{pA}/\sqrt{\mathrm{Hz}}$ within the TIA frequency band.