Internet Archive Scholar

A 1 V second-order sigma-delta modulator

S.J.-C. Ma, C.A.T. Salama
ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187)  

Preserved Fulltext

fulltext thumbnail
Web Archive Capture PDF (155.8 kB)
https://web.archive.org/web/20170706034554/http://ims.unipv.it/~franco/JournalPaper/82.pdf

A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL. The file type is application/pdf.

A second order switched capacitor sigma-delta modulator operating at a supply voltage of 1 V is presented. This low supply voltage restricts the gate overdrive voltage available for switching transistors. The design relies on the elimination of critical switches by using a modified switched op amp for the integrator and novel switched half-supply and reference voltage generators. The design has been carried out in a fully differential configuration in order to minimize errors arising from
more » ... injection and clock-feedthrough effects. The converter has been implemented using a conventional 0.8 µm double-poly double-metal CMOS process, having a nominal threshold voltage of 0.75 V. Test results, showing more than 9 bits of resolution with an oversampling ratio of 64, are also presented.
doi:10.1109/iscas.1998.704433 fatcat:a2s3vkqdxvc6llinyusseoixim
Citation

S.J.-C. Ma, C.A.T. Salama. "A 1 V second-order sigma-delta modulator." ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187)