Low-voltage, micropower weak-inversion CMOS GM-C filter

Maureen

【文件名】:Low-voltage, micropower weak-inversion CMOS GM-C filter.rar
【格　式】:rar
【大　小】:292K
【简　介】:In this paper, a CMOS implementation of a
low-voltage, micropower 5th-order elliptic low-pass
GM-C filter is presented. The Operational
Transconductance Amplifier (OTA) in this GM-C
filter design is implemented by a low-voltage volt-
age-to-current converter (V-I converter) working in
the weak-inversion region. The transconductance
can be tuned by control DC currents or DC voltage.
This V-I converter can be used as a basic building
block to construct low-voltage, micropower analog
VLSI signal processing systems. Also, the filter
provides a practical means for implementing very
large time constants on-chip allowing single-chip
solutions at very low frequencies. This 5th-order
elliptic low-pass GM-C filter operates, at a supply
voltage of 3V and has a tunable cutoff frequency
from 140 Hz to3.5 KHz.
【目　录】:
1. INTRODUCTION
2. V-I CONVERTER
3. GM-C FILTER
4. SIMULATION RESULTS
5. CONCLUSIONS