Title :
A 35 mW 30 dB gain control range current mode programmable gain amplifier with DC offset cancellation
Author :
Kumar, Thangarasu Bharatha ; Kaixue Ma ; Kiat Seng Yeo ; Wanlan Yang
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
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 mm2 core die area.
Keywords :
amplifiers; current-mode circuits; gain control; network topology; programmable circuits; DC offset cancellation; PGA; current mode exponential gain control; current mode programmable gain amplifier; design topology; differential pair wideband matching network; digitally-variable gain amplifiers; gain 30 dB; gain bandwidth product; gain control range; linearity error; post amplifier; power 35 mW; word length 6 bit; Baseband; Educational institutions; Electronics packaging; Mixers; Radio frequency; Current mode design; DC offset cancellation; SiGe BiCMOS; exponential current converter; linear-in-decibel; programmable gain amplifier; variable gain amplifier;
Conference_Titel :
Microwave Symposium (IMS), 2014 IEEE MTT-S International
Conference_Location :
Tampa, FL
DOI :
10.1109/MWSYM.2014.6848289
