A 4th-order bandpass switched-capacitor (SC) filter to be used as a part of an implantable device has been designed. The power consumption reduction is a key feature of such a system. This has been achieved by using a 1 V supply (SC operation are guaranteed by using the switched-opamp technique). In addition the active devices operates in the subthreshold region. The filter uses a fully differential topology to reduce the clock feedthrough noise and increase the dynamic range. The filter has been designed in a 0.35 mu m CMOS technology. It operates at 1kHz sampling frequency and it consumes about 1.2 mu W
Baschirotto, A., Bijno, D., Castello, R., Montecchi, F. (2000). A 1V 1.2µW 4th order bandpass switched-opamp SC filter for a cardiac pacer sensing stage. In ISCAS 2000: IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS - PROCEEDINGS, VOL III: EMERGING TECHNOLOGIES FOR THE 21ST CENTURY (pp.I-173-I-176). Piscataway : IEEE [10.1109/ISCAS.2000.856024].
A 1V 1.2µW 4th order bandpass switched-opamp SC filter for a cardiac pacer sensing stage
BASCHIROTTO, ANDREA;
2000
Abstract
A 4th-order bandpass switched-capacitor (SC) filter to be used as a part of an implantable device has been designed. The power consumption reduction is a key feature of such a system. This has been achieved by using a 1 V supply (SC operation are guaranteed by using the switched-opamp technique). In addition the active devices operates in the subthreshold region. The filter uses a fully differential topology to reduce the clock feedthrough noise and increase the dynamic range. The filter has been designed in a 0.35 mu m CMOS technology. It operates at 1kHz sampling frequency and it consumes about 1.2 mu WI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.