An analog baseband chain for a multistandard (Bluetooth, WCDMA/UMTS, and WLAN) reconfigurable receiver in a 0.13 µm CMOS occupying 1.65 mm2 is presented. The circuit consists of an open-loop programmable-gain amplifier (PGA1), an Active-Gm-RC low-pass filter (LPF), and a closed-loop programmable-gain amplifier (PGA2). The chain gain can be programmed in the range -6dB-to-68 dB, while the input-referred noise (IRN) is 5 nV/sqry(Hz). A dynamic range (DR) larger than 82dB is achieved for a 1% total harmonic distortion (THD). The current consumption is minimized and adjusted for the different operation conditions, down to 11 mA for the full chain.
D'Amico, S., Baschirotto, A., DE MATTEIS, M., Ghittori, N., Vigna, A., Malcovati, P. (2008). A CMOS 5 nV/√VHz 74-dB-gain-range 82-dB-DR multistandard baseband chain for bluetooth, UMTS, and WLAN. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 43(7), 1534-1541 [10.1109/JSSC.2008.922378].
A CMOS 5 nV/√VHz 74-dB-gain-range 82-dB-DR multistandard baseband chain for bluetooth, UMTS, and WLAN
BASCHIROTTO, ANDREA;DE MATTEIS, MARCELLO;
2008
Abstract
An analog baseband chain for a multistandard (Bluetooth, WCDMA/UMTS, and WLAN) reconfigurable receiver in a 0.13 µm CMOS occupying 1.65 mm2 is presented. The circuit consists of an open-loop programmable-gain amplifier (PGA1), an Active-Gm-RC low-pass filter (LPF), and a closed-loop programmable-gain amplifier (PGA2). The chain gain can be programmed in the range -6dB-to-68 dB, while the input-referred noise (IRN) is 5 nV/sqry(Hz). A dynamic range (DR) larger than 82dB is achieved for a 1% total harmonic distortion (THD). The current consumption is minimized and adjusted for the different operation conditions, down to 11 mA for the full chain.
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