Paper Info
Title
A current-reuse complementary-input chopper-stabilized amplifier for neural recording
Abstract
This paper presents a current-reuse complementary-input (CRCI) telescopic-cascode chopper stabilized amplifier with low-noise low-power operation. The current-reuse complementary-input strategy doubles the amplifier's effective transconductance by full current-reuse between complementary inputs, which significantly improves the noise-power efficiency. A pseudo-resistor based integrator is used in the DC servo loop to generate a high-pass cutoff below 1 Hz. The proposed amplifier features a mid-band gain of 39.25 dB, bandwidth from 0.12 Hz to 7.6 kHz, and draws 2.57 μA from a 1.2-V supply and exhibits an input-referred noise of 3.57 μVrms integrated from 100 mHz to 100 kHz, corresponding to a noise efficiency factor (NEF) of 2.5. The amplifier is designed in 0.13 μm 8-metal CMOS process.
Year
DOI
Venue
2014
10.1109/NEWCAS.2014.6933991
NEWCAS
Keywords
Field
DocType
cmos integrated circuits,bioelectric potentials,biomedical electronics,low noise amplifiers,low-power electronics,neurophysiology,resistors,8-metal cmos process,crci,dc servo loop,nef,amplifier effective transconductance,bandwidth,bandwidth 0.12 hz to 7.6 khz,current 2.57 mua,current-reuse complementary-input strategy,current-reuse complementary-input telescopic-cascode chopper stabilized amplifier,frequency 100 mhz to 100 khz,full current-reuse,gain 39.25 db,high-pass cutoff,input-referred noise,low-noise low-power operation,mid-band gain,neural recording,noise efficiency factor,noise-power efficiency,pseudo-resistor based integrator,size 0.13 mum,voltage 1.2 v,voltage 3.57 muv,low power electronics,transistors,impedance,capacitors,gain,servomotors,noise
Low-noise amplifier,Fully differential amplifier,Input offset voltage,Computer science,Operational transconductance amplifier,Direct-coupled amplifier,Instrumentation amplifier,Control engineering,Electronic engineering,Power-added efficiency,Electrical engineering,Operational amplifier
Conference
ISSN
Citations 
PageRank 
2472-467X
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Tan Yang12310.97
Junjie Lu200.34
Poore, N.300.68
Holleman, J.421.98