In this paper the design of a Programmable Gain Amplifier (0dB÷15dB, 3dB per step) embedded in the analog base-band chain for UWB Receivers in a standard 90nm CMOS technology is presented. The design has been realized using a proper Matlab procedure. Due to the large bandwidth required in the UWB Receivers, the procedure takes into account the second order effects related with the opamp parasitic capacitance and finite bandwidth. In this way the model guarantees to satisfy the IRN and transfer function accuracy requirements and to avoid linearity performance degradation. Thanks to the results obtained by the Matlab procedure, no capacitance are used in the PGA schematic. From a single 1.2V supply voltage, the PGA total current consumption is 3.5mA, the inband IIP3 is 15dBm and out-of-band IIP3 is 23dBm, the maximum IRN is 16nV/√Hz at 15dB gain. ©2008 IEEE.
Cito, A., DE MATTEIS, M., D'Amico, S., Delizia, P., Baschirotto, A., Azeredo Leme, C., et al. (2008). ACMOS 90nm 4-mW 15dBm-IIP3 base-band programmable gain amplifier for UWB receivers. In Ph.D. Research in Microelectronics and Electronics, 2008. PRIME 2008 (pp.213-216). 345 E 47TH ST, NEW YORK, NY 10017 USA : IEEE [10.1109/RME.2008.4595763].
ACMOS 90nm 4-mW 15dBm-IIP3 base-band programmable gain amplifier for UWB receivers
DE MATTEIS, MARCELLO;BASCHIROTTO, ANDREA;
2008
Abstract
In this paper the design of a Programmable Gain Amplifier (0dB÷15dB, 3dB per step) embedded in the analog base-band chain for UWB Receivers in a standard 90nm CMOS technology is presented. The design has been realized using a proper Matlab procedure. Due to the large bandwidth required in the UWB Receivers, the procedure takes into account the second order effects related with the opamp parasitic capacitance and finite bandwidth. In this way the model guarantees to satisfy the IRN and transfer function accuracy requirements and to avoid linearity performance degradation. Thanks to the results obtained by the Matlab procedure, no capacitance are used in the PGA schematic. From a single 1.2V supply voltage, the PGA total current consumption is 3.5mA, the inband IIP3 is 15dBm and out-of-band IIP3 is 23dBm, the maximum IRN is 16nV/√Hz at 15dB gain. ©2008 IEEE.
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