91dB Dynamic Range 9.5 nW Low Pass Filter for Bio-Medical Applications

被引：9
|
作者：
Reddy, Jayaram M. K. [1 ]
Polineni, Sreenivasulu [1 ]
Laxminidhi, Tonse [1 ]
机构：
[1] Natl Inst Technol Karnataka, Dept Elect & Commun Engn, Mangalore 575025, Karnataka, India
来源：
2018 IEEE COMPUTER SOCIETY ANNUAL SYMPOSIUM ON VLSI (ISVLSI) | 2018年
关键词：
Analog filter; low frequency; bio-medical; source follower; high dynamic range; DESIGN;
D O I：
10.1109/ISVLSI.2018.00088
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a second order, fully differential, low pass filter. The filter has a tunable bandwidth in the range 4 Hz to 100 Hz and offers a dynamic range of 91dB. The filter is based on the source-follower biquad operating in the sub-threshold region. The main idea is to exploit the strengths of sub-threshold source follower circuit, like low noise, low output impedance, high linearity and low power. The filter design has been validated in UMC 0.18 mu m CMOS process. The filter consumes only 9.5 nW of power at 1.8 V supply, making it suitable for bio-medical applications. In terms of noise and dynamic range the reported filter is better than previous works found from the literature.
引用
收藏
页码：453 / 457
页数：5
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