Paper Info
Title
A 0.5V time-domain instrumentation circuit with clocked and unclocked ΔΣ operation.
Abstract
This paper presents a time-domain instrumentation circuit with exceptional noise efficiency directed at using nano metre CMOS for next generation neural interfaces. Current efforts to realize closed loop neuromodulation and high fidelity BMI prosthetics rely extensively on digital processing which is not well integrated with conventional analogue instrumentation. The proposed time-domain topology employs a differential ring oscillator that is put into feedback using a chopper stabilized low noise transconductor and capacitive feedback. This realization promises better digital integration by extensively using time encoded digital signals and seamlessly allows both clocked u0026 unclocked ΔΣ behavior which is useful on-chip characterization and interfacing with synchronous systems. A 0.5 V instrumentation system is implemented using a 65 nm TSMC technology to realize a highly compact footprint that is 0.006 mm2 in size. Simulation results demonstrate an excess of 55 dB dynamic range with 3.5 μVrms input referred noise for the given 810 nW total system power budget corresponding to an NEF of 1.64.
Year
Venue
Field
2017
ISCAS
High fidelity,Time domain,Ring oscillator,Dynamic range,Computer science,Digital signal,Control theory,Interfacing,Electronic engineering,CMOS,Chopper,Electrical engineering
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
4
2
Name
Order
Citations
PageRank
Lieuwe B. Leene184.69
Timothy G. Constandinou27838.42