Title :
Low-noise variable-gain amplifier in 90-nm CMOS for TV on mobile
Author :
Tripodi, Lorenzo ; Brekelmans, Hans
Author_Institution :
Philips Res., Eindhoven
Abstract :
Presented is a low-noise variable-gain amplifier intended for handheld TV-on-mobile in the UHF band. The circuitry, implemented in 90-nm CMOS technology, is designed for compliance with MBRAI category 2 and 3 and for robustness against the high RF input levels caused by uplink signals from cellular and connectivity services integrated in the same handheld. The overall Noise Figure is kept low by employing lossless feedback in the VGA. The effect of a back- gate control to reduce the sensitivity of the amplifier characteristics to variations in supply voltage has been studied. The test chip realized exhibits 23 dB gain that can be stepped down with 2 dB resolution, 2.6 dB NF, a -5.4 dBm IIP3 at maximum gain and 40 mW power consumption at 1.2 V supply.
Keywords :
CMOS analogue integrated circuits; UHF amplifiers; low noise amplifiers; mobile television; power consumption; CMOS; MBRAI; UHF band; VGA; gain 23 dB; low-noise variable-gain amplifier; mobile TV; noise figure 2.6 dB; power 40 mW; power consumption; size 90 nm; voltage 1.2 V; CMOS technology; Integrated circuit technology; Low-noise amplifiers; Noise figure; Noise robustness; RF signals; Radio frequency; Radiofrequency amplifiers; Signal design; TV;
Conference_Titel :
Solid State Circuits Conference, 2007. ESSCIRC 2007. 33rd European
Conference_Location :
Munich
Print_ISBN :
978-1-4244-1125-2
DOI :
10.1109/ESSCIRC.2007.4430320
