TY - GEN
T1 - A voltage scaling 0.25-1.8 v delta-sigma modulator with inverter-opamp self-configuring amplifier
AU - Yoshioka, Kentaro
AU - Toyama, Yosuke
AU - Jyo, Teruo
AU - Ishikuro, Hiroki
PY - 2013
Y1 - 2013
N2 - A 2nd order discrete time (DT) ΔΣ modulator with very wide supply voltage range of 0.25-1.8 V is presented. An inverter-opamp self-configuring amplifier (IOSA) is proposed with sufficient gain through sub-threshold to strong inversion region. The amplifier senses the supply voltage and automatically configures either to operate as an inverter or an opamp. The prototype ADC fabricated in 180nm CMOS achieved SNDR of 53dB at a supply voltage of 0.3V and a best FoM of 0.09 pJ/step. At 1.8 V supply the modulator achieves SNDR 61dB and operates down to 0.25V.
AB - A 2nd order discrete time (DT) ΔΣ modulator with very wide supply voltage range of 0.25-1.8 V is presented. An inverter-opamp self-configuring amplifier (IOSA) is proposed with sufficient gain through sub-threshold to strong inversion region. The amplifier senses the supply voltage and automatically configures either to operate as an inverter or an opamp. The prototype ADC fabricated in 180nm CMOS achieved SNDR of 53dB at a supply voltage of 0.3V and a best FoM of 0.09 pJ/step. At 1.8 V supply the modulator achieves SNDR 61dB and operates down to 0.25V.
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U2 - 10.1109/ISCAS.2013.6571970
DO - 10.1109/ISCAS.2013.6571970
M3 - Conference contribution
AN - SCOPUS:84883396377
SN - 9781467357609
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 809
EP - 812
BT - 2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
T2 - 2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
Y2 - 19 May 2013 through 23 May 2013
ER -