TY - GEN
T1 - A low power sigma-delta modulator using class-C inverter
AU - Chae, Youngcheol
AU - Han, Gunhee
PY - 2007
Y1 - 2007
N2 - In switched capacitor sigma-delta (ΣΔ) analog-to-digital converters (ADCs), an operational transconductance amplifier (OTA) is the main building block and consumes most of power. This paper proposes that the OTAs can be replaced with class-C inverters for low-power consumption without sacrificing the performance. A second order ΣΔ modulator using class-C inverter technique is fabricated with a 0.35-μm CMOS process, occupies 3024 m2, dissipates 5.6-μW under 1.2V supply-voltage, and provides 63-dB/72-dB/76-dB SNDR/SNR/DR over 8-kHz signal bandwidth.
AB - In switched capacitor sigma-delta (ΣΔ) analog-to-digital converters (ADCs), an operational transconductance amplifier (OTA) is the main building block and consumes most of power. This paper proposes that the OTAs can be replaced with class-C inverters for low-power consumption without sacrificing the performance. A second order ΣΔ modulator using class-C inverter technique is fabricated with a 0.35-μm CMOS process, occupies 3024 m2, dissipates 5.6-μW under 1.2V supply-voltage, and provides 63-dB/72-dB/76-dB SNDR/SNR/DR over 8-kHz signal bandwidth.
UR - http://www.scopus.com/inward/record.url?scp=39749188890&partnerID=8YFLogxK
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U2 - 10.1109/VLSIC.2007.4342734
DO - 10.1109/VLSIC.2007.4342734
M3 - Conference contribution
AN - SCOPUS:39749188890
SN - 9784900784048
T3 - IEEE Symposium on VLSI Circuits, Digest of Technical Papers
SP - 240
EP - 241
BT - 2007 Symposium on VLSI Circuits, VLSIC - Digest of Technical Papers
T2 - 2007 Symposium on VLSI Circuits, VLSIC
Y2 - 14 June 2007 through 16 June 2007
ER -