A 0.6-V delta-sigma modulator with subthreshold-leakage suppression switches

IEEE Transactions on Circuits and Systems II: Express Briefs

Volumn 56, Issue 11, 2009, Pages 825-829

  Roh, Hyungdong ^a   Kim, Hyoungjoong ^a   Choi, Youngkil ^a   Roh, Jeongjin ^a   Kim, Yi Gyeong ^b   Kwon, Jong Kee ^b  

^a Hanyang University   (South Korea)

^b Electronics and Telecommunications Research Institute (ETRI)   (South Korea)

Author keywords

Analog to digital converter (ADC); Deltasigma modulator; Harmonic distortion; Leakage current; Signal to noiseplus distortion ratio (SNDR); Switched capacitor circuit

Indexed keywords

ANALOG TO DIGITAL CONVERSION; DELTA SIGMA MODULATION; HARMONIC DISTORTION; LEAKAGE CURRENTS; SIGNAL TO NOISE RATIO;

AMPLIFIER ARCHITECTURE; ANALOG TO DIGITAL CONVERTERS; DELTA SIGMA MODULATOR; DISTORTION RATIO; FEED-FORWARD ARCHITECTURES; PEAK SIGNAL TO NOISE RATIO; SUB-THRESHOLD LEAKAGE CURRENTS; SWITCHED -CAPACITOR CIRCUITS;

MODULATORS;

EID: 70549098220     PISSN: 15497747     EISSN: 15583791     Source Type: Journal    
DOI: 10.1109/TCSII.2009.2032444     Document Type: Article

References (18)

1. J. Crols and M. Steyaert, "Switched-opamp: An approach to realize full CMOS switched-capacitor circuits at very low power supply voltages," IEEE J. Solid-State Circuits, vol.29, no.8, pp. 936-942, Aug. 1994.
2. J. Sauerbrey, T. Tille, D. Schmitt-Landsiedel, and R. Thewes, "A 0.7-V MOSFET-only switched-opamp ÓÄmodulator in standard digital CMOS technology," IEEE J. Solid-State Circuits, vol.37, no.12, pp. 1662-1669, Dec. 2002.
3. M. Dessouky and A. Kaiser, "Very low-voltage digital-audio ÄÓ modulator with 88-dB dynamic range using local switch bootstrapping," IEEE J. Solid-State Circuits, vol.36, no.3, pp. 349-355, Mar. 2001.
4. K. Ishida, K. Kanda, A. Tamtrakarn, H. Kawaguchi, and T. Sakurai, "Managing subthreshold leakage in charge-based analog circuits with low- VTH transistors by analog T-switch (AT-switch) and super cut-off CMOS (SCCMOS)," IEEE J. Solid-State Circuits, vol.41, no.4, pp. 859- 867, Apr. 2006.
5. K. Roy, S. Mukhopadhyay, and H. Mahmoodi-Meimand, "Leakage current mechanisms and leakage reduction techniques in deepsubmicrometer CMOS circuits," Proc. IEEE, vol.91, no.2, pp. 305-327, Feb. 2003.
6. Y. Taur and T. H. Ning, Fundamentals of Modern VLSI Devices. New York: Cambridge Univ. Press, 1998.
7. D. A. Johns and K. Martin, Analog Integrated Circuit Design. New York: Wiley, 1997.
8. R. Schreier and G. C. Temes, Understanding Delta-Sigma Data Converters. Hoboken, NJ: Wiley, 2005.
9. J. Roh, S. Byun, Y. Choi, H. Roh, Y. Kim, and J. Kwon, "A 0.9-V 60-ìW 1-bit 4th-order delta-sigma modulator with 83-dB dynamic range," IEEE J. Solid-State Circuits, vol.43, no.2, pp. 361-370, Feb. 2008.
10. J. Silva, U. Moon, J. Steensgaard, and G. C. Temes, "Wideband lowdistortion delta-sigma ADC topology," Electron. Lett., vol.37, no.12, pp. 737-738, Jun. 2001.
11. A. Gharbiya and D. A. Johns, "On the implementation of inputfeedforward delta-sigma modulators," IEEE Trans. Circuits Syst. II, Exp. Briefs, vol.53, no.6, pp. 453-457, Jun. 2006.
12. K. Kang, J. Roh, Y. Choi, H. Roh, H. Nam, and S. Lee, "Class-D audio amplifier using 1-bit fourth-order delta-sigma modulation," IEEE Trans. Circuits Syst. II, Exp. Briefs, vol.55, no.8, pp. 728-732, Aug. 2008.
13. L. Yao, M. S. J. Steyaert, and W. Sansen, "A 1-V 140-ìW 88-dB audio sigma-delta modulator in 90-nm CMOS," IEEE J. Solid-State Circuits, vol.39, no.11, pp. 1809-1818, Nov. 2004.
14. J. Roh, "High-gain class-AB OTA with low quiescent current," Analog Integr. Circuits Signal Process., vol.47, no.2, pp. 225-228, May 2006.
15. J. Goes, B. Vaz, R. Monteiro, and N. Paulino, "A 0.9-V ÓÄ modulator with 80-dB SNDR and 83-dB DR using a single-phase technique," in Proc. ISSCC Dig. Tech. Papers, Feb. 2006, pp. 74-75.
16. K. Pun, S. Chatterjee, and P. Kinget, "A 0.5-V 74-dB SNDR 25-kHz continuous-time delta-sigma modulator with a return-to-open DAC," IEEE J. Solid-State Circuits, vol.42, no.3, pp. 496-507, Mar. 2007.
17. Y. Chae, I. Lee, and G. Han, "A 0.7-V 36-ìW 85-dB DR audio ÄÓ modulator using class-C inverter," in Proc. ISSCC Dig. Tech. Papers, Feb. 2008, pp. 490-491.
18. M. G. Kim, G.-C. Ahn, P. K. Hanumolu, S.-H. Lee, S.-H. Kim, S.-B. You, J.-W. Kim, G. C. Temes, and U.-K. Moon, "A 0.9 V 92 dB double-sampled switched-RC delta-sigma audio ADC," IEEE J. Solid- State Circuits, vol.43, no.5, pp. 1195-1206, May 2008.