Record Details

800-nA Process-and-Voltage-Invariant 106-dB PSRR PTAT Current Reference

DSpace at IIT Bombay

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Field Value
 
Title 800-nA Process-and-Voltage-Invariant 106-dB PSRR PTAT Current Reference
 
Creator AMARAVATI, A
DAVE, M
BAGHINI, MS
SHARMA, DK
 
Subject Process and temperature tolerance
proportional to absolute temperature (PTAT) current
resistor
transconductance
CIRCUIT
RESISTORS
DESIGN
 
Description This brief presents a novel process-and-voltage invariant proportional to absolute temperature (PTAT) current reference. The proposed circuit is designed and fabricated in 180-nm mixed-mode CMOS technology. Measurement results show that the I-PTAT varies only by +/- 2.4% (+/- 3 sigma/mean) across 18 test chips. One thousand Monte Carlo simulation runs show that the maximum deviation (+/- 3 sigma/mean) from the desired value of the PTAT current is +/- 5.4%. The proposed PTAT current reference uses a process, voltage, and temperature (PVT)-invariant resistor circuit having R-ON variation reduced by 4.2 times, as compared to a fixed biased MOSFET. The proposed PTAT current reference draws only 800-nA current from the supply voltage and also exhibits a high dc power supply rejection ratio (PSRR) of 106 dB. This brief also presents a PVT-invariant transconductance using the implemented PVT-invariant resistor.
 
Publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
 
Date 2014-10-17T05:46:36Z
2014-10-17T05:46:36Z
2013
 
Type Article
 
Identifier IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 60(9)577-581
http://dx.doi.org/10.1109/TCSII.2013.2268435
http://dspace.library.iitb.ac.in/jspui/handle/100/16103
 
Language en