Abstract

A 90 nm-CMOS power-optimized analog base- band chain for ultra-low-power impulse-radio ultra-wideband (IR-UWB) receivers is presented. The proposed device merges the functions of a programmable gain amplifier (PGA) and a low-pass filter (LPF). It consists of the cascade of three biquadratic cells made up by opamps in a series-shunt configuration, which features high input impedance, low load effects in the cascade blocks, and better frequency response. The opamp parameters are included in the overall biquad transfer function. This allows getting very low power performance, since the opamp bandwidth is not required to be much larger than the filter cutoff frequency. Moreover, the current consumption is optimized according to the selected gain level (1.3 mA at 0 dB-gain up to 1.9 mA at 40 dB-gain). The PGA features a 0–40 dB programmable gain range with a 5 dB gain-step. The LPF performs a sixth-order 255 MHz low-pass frequency response. For the overall chain the IIP3 is 14 dBm at 0 dB gain, while the input referred noise is 12.5 nV/ Hz at 40 dB gain.

Autore Pugliese

• D'amico Stefano

Tutti gli autori

• S. D'Amico , M. De Blasi , M. De Matteis , A. Baschirotto

Titolo volume/Rivista

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS. I, REGULAR PAPERS

Anno di pubblicazione

2012

ISSN

1549-8328

ISBN

Non Disponibile

Numero di citazioni Wos

20

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

31

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile