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A 35 mW 30 dB Gain Control Range Current Mode Programmable Gain Amplifier With DC Offset Cancellation
Conference proceeding

A 35 mW 30 dB Gain Control Range Current Mode Programmable Gain Amplifier With DC Offset Cancellation

Thangarasu Bharatha Kumar, Kaixue Ma, Kiat Seng Yeo, Wanlan Yang and IEEE
IEEE MTT-S International Microwave Symposium digest, pp.1-4
IEEE MTT-S International Microwave Symposium
01/01/2014
DOI: https://doi.org/10.1109/MWSYM.2014.6848289

Abstract

Engineering Engineering, Electrical & Electronic Physical Sciences Physics Physics, Applied Science & Technology Technology
A 6-bit programmable gain amplifier (PGA) with current mode exponential gain control is presented in this paper that achieves a linearity error within +/- 0.1 dB over a 30-dB wide gain control range. The proposed design topology has two digitally-variable gain amplifiers and a post amplifier that are interconnected by a differential pair wideband matching network to provide an enhanced gain bandwidth product. The proposed PGA has 35 mW power consumption and occupies 0.25 mm(2) core die area.

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