Title :
A 110-MHz 84-dB CMOS programmable gain amplifier with integrated RSSI function
Author :
Wu, Chun-Pang ; Tsao, Hen-Wai
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
6/1/2005 12:00:00 AM
Abstract :
This paper describes a CMOS programmable gain amplifier (PGA) that maintains a 3-dB bandwidth greater than 110 MHz and can provide an 84-dB gain control range with 1-dB step resolution. The PGA can also be operated in a low-power mode with 3-dB bandwidth greater than 71 MHz. Integrated with this PGA is a CMOS successive logarithmic detecting amplifier with a ±0.7-dB logarithmic accuracy over an 80-dB dynamic range. It achieves -83-dBm sensitivity and consumes 13 mA from a single 3-V supply in the normal power mode. The chip area, including pads, occupies 1.5×1.5 mm2.
Keywords :
CMOS analogue integrated circuits; VHF circuits; gain control; intermediate-frequency amplifiers; programmable circuits; radiofrequency integrated circuits; 110 MHz; 13 mA; 3 V; CMOS RF transceiver integrated circuits; CMOS analog integrated circuits; CMOS programmable gain amplifier; bandwidth; control range; intermediate-frequency amplifiers; logarithmic accuracy; logarithmic detecting amplifier; low-power mode; received signal strength indicator; sensitivity; step resolution; Analog integrated circuits; Bandwidth; Baseband; CMOS logic circuits; Dynamic range; Electronics packaging; Frequency; Gain control; Radiofrequency amplifiers; Signal processing; CMOS RF transceiver integrated circuits; CMOS analog integrated circuits; IF amplifier; gain-programming logic; intermediate-frequency amplifiers; programmable gain amplifier; received signal strength indicator (RSSI);
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2005.848023
