Title :
Wide input range 1.7μW 1.2kS/s resistive sensor interface circuit with 1 cycle/sample logarithmic sub-ranging
Author :
Myungjoon Choi ; Junhua Gu ; Blaauw, David ; Sylvester, Dennis
Author_Institution :
Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
A wide input range 1.7μW, 1.2kS/s resistive sensor interface circuit fabricated in 0.18μm CMOS is presented. This circuit consumes 6.6× lower power and 31.8× less energy than previous state-of-the-art work, considering the worst-case cycle count required for correct conversion. The proposed design uses a logarithmic subrange detector based on comparator metastability to convert an input resistance ranging from 10kΩ to 10MΩ in 1 cycle/sample.
Keywords :
CMOS integrated circuits; comparators (circuits); CMOS integrated circuit; comparator metastability; correct conversion; logarithmic sub-ranging; logarithmic subrange detector; power 1.7 muW; resistance 10 kohm to 10 Mohm; resistive sensor interface circuit; size 0.18 mum; worst-case cycle count; Capacitors; Detectors; Electrical resistance measurement; Radiation detectors; Resistance; Resistors; Voltage measurement;
Conference_Titel :
VLSI Circuits (VLSI Circuits), 2015 Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-4-86348-502-0
DOI :
10.1109/VLSIC.2015.7231311
