Title :
A 4th order CMOS 65nm wideband low power analog filter for wireless receivers
Author :
De Matteis, M. ; Amico, S.D. ; Andriulo, P. ; Cocciolo, G. ; Baschirotto, A.
Author_Institution :
Innovation Eng. Dept., Univ. of Salento, Lecce, Italy
Abstract :
A 4th-order continuous-time band-pass filter for wireless receivers is here presented. The filter is composed by the cascade of two active RC cells. The overall pass-band (32 dB) gain is distributed for each cell in order to minimize the power consumption. The operating point issues due to the low VDD/VTH ratio - a value of 2 is typical in CMOS 65 nm technologies and down - have been solved by adding a proper bias circuit to the filter. The f@-3dB deviation due to the technological spread, aging and temperature in active RC circuits is adjusted by using variable capacitor with 4 bits of resolution. The device in 65 nm CMOS technology consumes 1.3 mW from a single 1.2 V supply voltage, features -10 dBm-IIP3 and 1.6 mVrms output integrated noise over the pass-band - 300 kHz÷8 MHz.
Keywords :
CMOS analogue integrated circuits; band-pass filters; continuous time filters; low-power electronics; CMOS wideband low power analog filter; continuous-time band-pass filter; power 1.3 mW; size 65 nm; voltage 1.2 V; wireless receivers; Band pass filters; CMOS technology; Circuit topology; Energy consumption; Integrated circuit technology; Linearity; Low voltage; Microelectronics; Power filters; Threshold voltage; Analog filter; CMOS 65nm; continuous time; low power; low voltage;
Conference_Titel :
Electronics, Circuits, and Systems, 2009. ICECS 2009. 16th IEEE International Conference on
Conference_Location :
Yasmine Hammamet
Print_ISBN :
978-1-4244-5090-9
Electronic_ISBN :
978-1-4244-5091-6
DOI :
10.1109/ICECS.2009.5410968
