A 155-MHz BiCMOS automatic gain control amplifier

Author

Huang, Po-Chiun ; Huang, Chen-Yi ; Wang, Chorng-Kuang

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

46

Issue

5

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

643

Lastpage

647

Abstract

This paper proposes a 155-MHz automatic gain control (AGC) amplifier implemented in a double-poly-double-metal 1.0-μm BiCMOS technology. The amplifier contains an exponential-type variable gain amplifier, a buffer-based filter, and asynchronous demodulation peak detector circuits. The initialization and the output magnitude setup circuits are incorporated in the AGC amplifier. It yields an input dynamic range of at least 26 dB and provides a constant output of 1 V _pp at a 50-Ω load with AGC loop bandwidth of 80 kHz. The power consumption is 180 mW from a single 5-V supply

Keywords

BiCMOS analogue integrated circuits; automatic gain control; demodulation; feedback amplifiers; peak detectors; 1 V; 1.0 micron; 155 MHz; 180 mW; 5 V; 50 ohm; 80 kHz; BiCMOS; asynchronous demodulation peak detector circuits; automatic gain control amplifier; buffer-based filter; double-poly-double-metal technology; exponential-type variable gain amplifier; input dynamic range; loop bandwidth; output magnitude setup circuits; power consumption; BiCMOS integrated circuits; Circuit simulation; Dynamic range; Filters; Gain control; Harmonic distortion; Sampling methods; Solid state circuits; Switches; Switching circuits;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.769815

Filename

769815