A Power Scalable and Low Power Pipelined ADC

A 10-bit 50MS/s (35mW) to 1kS/s (15μW) power scalable pipelined ADC is described. The ADC achieves wide power scaling by using a current modulated approach combined with rapid power-on opamps. Measured results from a prototype in a 1.8V, 0.18μm CMOS process show an SNDR >54dB over the entire power scalable range.

[1]  Wenhua Yang,et al.  A 3-V 340-mW 14-b 75-Msample/s CMOS ADC with 85-dB SFDR at Nyquist input , 2001, IEEE J. Solid State Circuits.

[2]  Behzad Razavi,et al.  Design of Analog CMOS Integrated Circuits , 1999 .

[3]  Michiel Steyaert,et al.  Switched-opamp: an approach to realize full CMOS switched-capacitor circuits at very low power supply voltages , 1994, IEEE J. Solid State Circuits.

[4]  William J. Dally,et al.  A low-power multiplying DLL for low-jitter multigigahertz clock generation in highly integrated digital chips , 2002, IEEE J. Solid State Circuits.

[5]  Christian Enz,et al.  CMOS low-power analog circuit design , 1996, Emerging Technologies: Designing Low Power Digital Systems.

[6]  K. Leung,et al.  A capacitor-free CMOS low-dropout regulator with damping-factor-control frequency compensation , 2003, IEEE J. Solid State Circuits.

[7]  Andrew Masami Abo,et al.  Design for Reliability of Low-voltage, Switched-capacitor Circuits , 1999 .

[8]  William J. Dally,et al.  Digital systems engineering , 1998 .

[9]  Bradley A. Minch.  A low-voltage MOS cascode bias circuit for all current levels , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[10]  David A. Johns,et al.  Analog Integrated Circuit Design , 1996 .

[11]  T. E. Linnenbrink,et al.  ADC testing with IEEE Std 1241-2000 , 2001, IMTC 2001. Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference. Rediscovering Measurement in the Age of Informatics (Cat. No.01CH 37188).

[12]  Kari Halonen,et al.  1-V 9-bit pipelined switched-opamp ADC , 2001 .

[13]  Stephen H. Lewis,et al.  A 10-b 20-Msample/s analog-to-digital converter , 1992 .

[14]  G. Geelen,et al.  A fast-settling CMOS op amp for SC circuits with 90-dB DC gain , 1990 .

[15]  A. Rueda,et al.  Design of a CMOS fully differential switched-opamp for SC circuits at very low power supply voltages , 2001, ICECS 2001. 8th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.01EX483).

[16]  R. Castello,et al.  A 1 V 1.8 MHz CMOS switched-opamp SC filter with rail-to-rail output swing , 1997, 1997 IEEE International Solids-State Circuits Conference. Digest of Technical Papers.