TY - GEN
T1 - A high voltage zero-static current voltage scaling ADC interface circuit for micro-stimulator
AU - Lee, Paul Jung Ho
AU - Chen, Denis Guangyin
AU - Bermak, Amine
AU - Law, Man Kay
PY - 2014
Y1 - 2014
N2 - This paper describes a SAR ADC interface circuit, where the input sensing voltage from a bipolar high voltage domain is linearly translated into the low voltage domain where the SAR ADC operates. The proposed interface circuit employs the principle of charge transfer amplifier to deliver information between two different power domains, in one step, without static power consumption, even if both domains do not share the the same ground voltages. To implement the charge transfer scheme using standard asymmetric LDMOS, we propose a novel dynamic body biased high voltage transmission gate. Prototype simulation using a standard 24V BCDMOS process shows that the proposed circuit draws 2.12μW of power when it senses a voltage that swings between +10V and -10V at 1 kSPS sampling frequency.
AB - This paper describes a SAR ADC interface circuit, where the input sensing voltage from a bipolar high voltage domain is linearly translated into the low voltage domain where the SAR ADC operates. The proposed interface circuit employs the principle of charge transfer amplifier to deliver information between two different power domains, in one step, without static power consumption, even if both domains do not share the the same ground voltages. To implement the charge transfer scheme using standard asymmetric LDMOS, we propose a novel dynamic body biased high voltage transmission gate. Prototype simulation using a standard 24V BCDMOS process shows that the proposed circuit draws 2.12μW of power when it senses a voltage that swings between +10V and -10V at 1 kSPS sampling frequency.
UR - https://www.scopus.com/pages/publications/84907417194
U2 - 10.1109/ISCAS.2014.6865401
DO - 10.1109/ISCAS.2014.6865401
M3 - Conference contribution
AN - SCOPUS:84907417194
SN - 9781479934324
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 1380
EP - 1383
BT - 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
Y2 - 1 June 2014 through 5 June 2014
ER -