论文信息 - A 3.3-V CMOS wideband exponential control variable-gain-amplifier

A 3.3-V CMOS wideband exponential control variable-gain-amplifier

A CMOS cascadable variable gain amplifier (VGA) with exponential gain control characteristic is presented. The pseudo-exponential gain control function is realized by a source-coupled pair with diode-connected loads. It is suitable for low supply and high speed applications. Using 0.5 /spl mu/m CMOS technology, experimental results show the bandwidth of the proposed amplifier is larger than 150 MHz with a gain control range of 15 dB. The power consumption is 12.5 mW from a 3.3-V power supply.

Chorng-Kuang Wang | Po-Chiun Huang | Li-Yu Chiou

[1] Asad A. Abidi,et al. A 50-MHz CMOS variable gain amplifier for magnetic data storage systems , 1992 .

[2] Chorng-Kuang Wang,et al. An automatic gain control architecture for SONET OC-3 VLSI , 1997 .

[3] Ramesh Harjani,et al. A low-power CMOS VGA for 50 Mb/s disk drive read channels , 1995 .

[4] J. Q. Wang,et al. Minimization of memory access overhead for multidimensional DSP applications via multilevel partitioning and scheduling , 1997 .

[5] M. Maeda,et al. A DC-coupled wide dynamic range AGC amplifier IC for 560-Mbit/s optical transmission , 1987 .

[6] H. C. Yang,et al. All CMOS analog pulse detection system for data storage applications , 1992, [Proceedings] 1992 IEEE International Symposium on Circuits and Systems.