A PVT tolerant BPF using turn-off MOSFET for bio applications in 0.13μm CMOS

This paper presents a PVT tolerant BPF for bio-medical applications, which operate at very low frequencies. As the BPF used in this area has a very large time constant, the cut-off frequency of the BPF is very susceptible to PVT variations. In order to avoid such variation, the proposed architecture...

Full description

Saved in:
Bibliographic Details
Published in2010 International SoC Design Conference pp. 420 - 423
Main Authors Kangyeop Choo, Woojae Lee, SeongHwan Cho
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2010
Subjects
Band pass filters
Capacitance
Immune system
Logic gates
Negative feedback
Resistance
Resistors
Online AccessGet full text

Cover

More Information
Summary:This paper presents a PVT tolerant BPF for bio-medical applications, which operate at very low frequencies. As the BPF used in this area has a very large time constant, the cut-off frequency of the BPF is very susceptible to PVT variations. In order to avoid such variation, the proposed architecture uses a replica LPF and negative feedback to enable a PVT invariant time constant. Simulation result shows that the variation of the frequency response of the proposed BPF remains under 1% with the following PVT variations: process (ss, tt, ff), voltage (1.1V to 2.0V) and temperature (0°C to 100°C). The circuit has been implemented using 0.13μm CMOS technology with a supply voltage of 1.2V and 3.3V and it consumes 200nW.
ISBN:1424486335
9781424486335
DOI:10.1109/SOCDC.2010.5682882