Bandwidth enhancement for transimpedance amplifiers

被引：140

作者：

Analui, B ^{[1
]}

Hajimiri, A ^{[1
]}

机构：

[1] CALTECH, Pasadena, CA 91125 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2004年 / 39卷 / 08期

关键词：

bandwidth enhancement; integrated circuits; low-pass filter; matching networks; passive networks; transimpedance amplifier (TIA); wide-band amplifiers;

D O I：

10.1109/JSSC.2004.831783

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A technique for bandwidth enhancement of a given amplifier is presented. Adding several interstage passive matching networks enables the control of transfer function-and frequency response behavior. Parasitic capacitances of cascaded gain stages are isolated from each other and absorbed into passive networks. A simplified design procedure, using well-known low-pass filter component values, is introduced. To demonstrate the feasibility of the method, a CMOS transimpedance amplifier (TIA) is implemented in a 0.18-mum BiCMOS technology. It achieves 3 dB bandwidth of 9.2 GHz in the presence of a 0.5-pF photodiode capacitance. This corresponds to a bandwidth enhancement ratio of 2.4 over the amplifier without the additional passive networks. The trans-resistance gain is 54 dBOmega, while drawing 55 mA from a 2.5-V supply. The input sensitivity of the TIA is -18 dBm for a bit error rate of 10(-12).

引用

页码：1263 / 1270

页数：8

共 29 条

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