An analog baseband chain for a multistandard (Bluetooth, WCDMA/UMTS, and WLAN) reconfigurable receiver in a 0.25μm CMOS uses 1.65mm2. The structure is composed by 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 -10+68dB, while the input-referred noise (IRN) is 5nV/√Hz. In terms of linearity, the device features an in-band output referred intermodulation intercept point (OIP3) of 21dBm in UMTS mode, and a 1dB compression point of 1.3dBm in WLAN mode. A dynamic range (DR) larger than 78dB is achieved for a 1% total harmonic distortion (THD). The current consumption is minimized and adjusted for the different operation conditions, down to 11mA for the full chain. © 2007 IEEE.
D'Amico, S., DE MATTEIS, M., Baschirotto, A., Ghittori, N., Vigna, A., Malcovati, P. (2007). A 5nV/√Hz-IRN, 78dB-gain-range, 78dB-DR multi-standard baseband chain for bluetooth, UMTS and WLAN. In ESSCIRC 2007 - Proceedings of the 33rd European Solid-State Circuits Conference (pp.440-443). 345 E 47TH ST, NEW YORK, NY 10017 USA : IEEE [10.1109/ESSCIRC.2007.4430337].
A 5nV/√Hz-IRN, 78dB-gain-range, 78dB-DR multi-standard baseband chain for bluetooth, UMTS and WLAN
DE MATTEIS, MARCELLO;BASCHIROTTO, ANDREA;
2007
Abstract
An analog baseband chain for a multistandard (Bluetooth, WCDMA/UMTS, and WLAN) reconfigurable receiver in a 0.25μm CMOS uses 1.65mm2. The structure is composed by 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 -10+68dB, while the input-referred noise (IRN) is 5nV/√Hz. In terms of linearity, the device features an in-band output referred intermodulation intercept point (OIP3) of 21dBm in UMTS mode, and a 1dB compression point of 1.3dBm in WLAN mode. A dynamic range (DR) larger than 78dB is achieved for a 1% total harmonic distortion (THD). The current consumption is minimized and adjusted for the different operation conditions, down to 11mA for the full chain. © 2007 IEEE.
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