A single-stage variable-gain amplifier with 70-dB dynamic range for CDMA2000 transmit applications

被引：23

作者：

Aggarwal, S ^{[1
]}

Khosrowbeygi, A ^{[1
]}

Daanen, A ^{[1
]}

机构：

[1] Philips Semicond, San Jose, CA 95131 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2003年 / 38卷 / 06期

关键词：

code-division multiple access (CDMA); gain control; variable-gain amplifier (VGA);

D O I：

10.1109/JSSC.2003.811868

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 variable-gain amplifier (VGA) circuit is presented with a gain range of more than 70 dB in a single stage. Vertical stacking of multipliers in a single-stage VGA results in a considerable saving of power, which is a prime requirement in cellular systems. The gain-in-dB is a linear function of the control voltage and has excellent stability over temperature. The amplifier is a part of a code-division multiple access cellular transmit integrated circuit, and provides good linearity and noise characteristics over a wide range of IF frequencies. The circuit is fabricated in a 30-GHz f(t) BiCMOS technology and consumes 8 mA at 2.7 V.

引用

页码：911 / 917

页数：7

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