Title :
A 45V 10-b electrode monitoring analog-to-digital converter
Author :
Lee, Edward K. F.
Author_Institution :
Alfred Mann Found., Santa Clarita, CA, USA
Abstract :
In this paper, a 10-b analog-to-digital converter (referred to as EMADC) for directly monitoring electrical stimulator outputs with voltage from ~0V up to ~45V is proposed. A new high voltage (HV) switch for sampling is also proposed. The maximum input voltage for the HV switch is only limited by the drain-to-source breakdown voltages of the HV transistors. The EMADC was implemented in a 0.18μm CMOS HV process. For a sampling rate of 125kS/s, the current consumptions from the 46V and 2.7V supplies were 4μA and 21μA, respectively. The measured DNL and INL errors were within -0.61/+0.78LSB and -0.70/+0.92LSB, respectively.
Keywords :
CMOS integrated circuits; analogue-digital conversion; electric breakdown; electrodes; power integrated circuits; switchgear; 10-b electrode monitoring analog-to-digital converter; CMOS HV process; DNL; EMADC; HV switch; HV transistor; INL; complementary metal oxide semiconductor; current 21 muA; current 4 muA; current consumption; differential nonlinearity; drain-to-source breakdown voltage; high voltage switch; integral nonlinearity; sampling rate; size 0.18 mum; voltage 2.7 V; voltage 45 V; voltage 46 V; Capacitors; Electrodes; Monitoring; Switches; Switching circuits; Transistors; Voltage measurement;
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7168864
