Name
Title | ||
|---|---|---|
A 255 MHz Programmable Gain Amplifier and Low-Pass Filter for Ultra Low Power Impulse-Radio UWB Receivers |
Abstract | ||
|---|---|---|
A 90 nm-CMOS power-optimized analog baseband 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. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/TCSI.2011.2163886 | Circuits and Systems I: Regular Papers, IEEE Transactions |
Keywords | Field | DocType |
CMOS integrated circuits,amplifiers,low-pass filters,low-power electronics,radio receivers,transfer functions,ultra wideband communication,CMOS power-optimized analog baseband chain,biquad transfer function,biquadratic cells,frequency 255 MHz,frequency response,low-pass filter,programmable gain amplifier,series-shunt configuration,size 90 nm,ultra low power impulse-radio UWB receivers,ultra-low-power impulse-radio ultra-wideband receivers,very low power performance,Active circuits,active filters,analog integrated circuits | Digital biquad filter,Active filter,Open-loop gain,Electronic engineering,Low-pass filter,Cutoff frequency,Programmable-gain amplifier,Electrical engineering,Operational amplifier,Mathematics,Amplifier | Journal |
Volume | Issue | ISSN |
59 | 2 | 1549-8328 |
Citations | PageRank | References |
17 | 1.35 | 10 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Stefano D'Amico | 1 | 27 | 3.32 |
| Marco De Blasi | 2 | 18 | 3.33 |
| De Matteis, M. | 3 | 54 | 16.15 |
| A. Baschirotto | 4 | 176 | 54.55 |