MOS current divider based PGA

被引：4
|
作者：
Sanz, MT [1 ]
Celma, S [1 ]
Calvo, B [1 ]
Alegre, JP [1 ]
机构：
[1] Univ Zaragoza, Fac Ciencias, Dept Ingn Elect & Comunicac, Area Elect, E-50009 Zaragoza, Spain
来源：
MICROELECTRONICS RELIABILITY | 2005年 / 45卷 / 3-4期
关键词：
D O I：
10.1016/j.microrel.2004.09.008
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 highly linear, digitally programmable gain amplifier (PGA) based on an inherently linear MOS current divider (MCD) is presented in this paper. A 3-bit prototype with a total variation range of 36dB in gain has been implemented in a 3.3 V-0.35 mum CMOS process with 2.5 V supply voltage. Experimental results prove the high linearity of the system, which presents distortion levels better than - 70 dB for 1 MHz and 1 Vp-p output signals. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：727 / 732
页数：6
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