A 90nm-CMOS power-optimized Programmable Gain Amplifier (PGA) for Ultra Low power Low Rate-Ultra Wide Band (LR-UWB) receivers is illustrated. The PGA features a 0-40dB programmable gain range with a 5dB gain-step. In addition it implements a 6th-order 240MHz Bessel lowpass transfer function. The cut-off frequency is about constant, independently on the different gain settings. At 40dB gain, the input 1dBcp is -44.8dBm, and the NF is 14.3dB. The current consumption (1.9mA at OdB-gain up to 2.9mA at 40dB-gain) is optimized by including the opamp performance in the cell transfer function, and accordingly to the selected gain level. © 2009 IEEE.
D'Amico, S., Baschirotto, A., Philips, K., Rousseaux, O., Gyselinckx, B. (2009). A 240MHz programmable gain amplifier&filter for ultra low power low-rate UWB receivers. In ESSCIRC, 2009. ESSCIRC '09. Proceedings of (pp.260-263) [10.1109/ESSCIRC.2009.5326006].
A 240MHz programmable gain amplifier&filter for ultra low power low-rate UWB receivers
BASCHIROTTO, ANDREA;
2009
Abstract
A 90nm-CMOS power-optimized Programmable Gain Amplifier (PGA) for Ultra Low power Low Rate-Ultra Wide Band (LR-UWB) receivers is illustrated. The PGA features a 0-40dB programmable gain range with a 5dB gain-step. In addition it implements a 6th-order 240MHz Bessel lowpass transfer function. The cut-off frequency is about constant, independently on the different gain settings. At 40dB gain, the input 1dBcp is -44.8dBm, and the NF is 14.3dB. The current consumption (1.9mA at OdB-gain up to 2.9mA at 40dB-gain) is optimized by including the opamp performance in the cell transfer function, and accordingly to the selected gain level. © 2009 IEEE.
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