Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1996-03-08
1997-12-30
Gaffin, Jeffrey A.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341143, 341118, H03M 112
Patent
active
057035890
ABSTRACT:
A switched capacitor input sampling circuit in a chopper stabilized delta sigma modulator includes first and second input terminals adapted to receive a differential analog input voltage therebetween and first and second terminals coupled to first and second charge summing conductors, respectively, of the delta sigma modulator. The switched capacitor input sampling circuit also includes a first switch coupled between the first input terminal and a first conductor, a second switch coupled between the second input terminal and a second conductor, a third switch coupled between the first conductor and a bias voltage conductor, a fourth switch coupled between the second conductor and the bias voltage conductor, a first input capacitor coupled between the first conductor and a third conductor, a second input capacitor coupled between the second conductor and a fourth conductor, a fifth switch coupled between the third and fourth conductors, a sixth switch coupled between the third conductor and the first charge summing conductor, and a seventh switch coupled between the fourth conductor and the second charge summing conductor.
REFERENCES:
patent: 4138649 (1979-02-01), Schaffer
patent: 4600901 (1986-07-01), Rabaey
patent: 4633223 (1986-12-01), Senderowicz
patent: 4939516 (1990-07-01), Early
patent: 4994805 (1991-02-01), Dedic et al.
patent: 5001725 (1991-03-01), Senderowicz et al.
patent: 5012245 (1991-04-01), Scott et al.
patent: 5159341 (1992-10-01), McCartney et al.
patent: 5245344 (1993-09-01), Sooch
patent: 5274374 (1993-12-01), Powell et al.
patent: 5495200 (1996-02-01), Kwan et al.
Max W. Hauser and Robert W. Brodersen, "Circuit and Technology Considerations for MOS Delta-Sigma A/D Converters", 1986 IEEE International Symposium on Circuits and Systems, pp. 1310-1315.
Rinaldo Castello and Paul R. Gray, "Performance Limitations in Switched-Capacitor Filters", IEEE Transactions on Circuits and Systems, vol. CAS-32, No. 9 Sep. 1985, pp. 865-876.
Hsieh et al., "A Low-Noise Chopper-Stabilized Differential Switched-Capacitor Filtering Technique", pp. 243-250, Reprinted from IEEE Solid-State Circuits, vol. SC-16, No. 6, pp. 708-715, Dec., 1981.
Gregory L. Schaffer, "A CMOS A/D Converter Circuit for Thermocouple Temperature Measurement", 1981 IEEE International Solid-State Circuits Conference, pp. 60-61.
Enz et al., "A CMOS Chopper Amplifier", IEEE Journal of Solid-State Circuits, vol. SC-22, No. 3, Jun. 1987, pp. 335-342.
Michael C. W. Coln, "Chopper Stabilization of MOS Operational Amplifiers Using Feed-Forward Techniques", IEEE Journal of Solid-State Circuits, vol. SC-16, No. 6, Dec. 1981, pp. 745-748.
J. D. Everard, "A Single Channel Codec", ICC-78 International Conference on Communication, Toronto, Canada (Jun. 4-7, 1978), pp. 45.3.1 to 45.3.5.
"CS5501, Low-Cost, 16-Bit Measurement A/D Converter", Crystal Semiconductor Corporation, Austin, Texas, Feb. 1990, pp.3-279 to 3-316.
Kalthoff Timothy V.
Wang Binan
Wu Miaochen
Burr-Brown Corporation
Gaffin Jeffrey A.
Kost Jason L. W.
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