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A 90 nm-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 0-40 dB programmable gain range with a 5dB gain-step. In addition it implements a 6th -order 240 MHz Bessel lowpass transfer function. The cut-off frequency is about constant, independently on the different gain settings. At 40 dB gain, the...
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