Buffered oversampling analog-to-digital converter with...

Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder

Reexamination Certificate

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Details

C341S155000

Reexamination Certificate

active

06927717

ABSTRACT:
The invention provides methods and apparatus for improving the direct current (DC) offset performance of an oversampling analog-to-digital (A/D) converter, including A/D converters that include an oversampling quantizer such as a single or multi-bit Δ-Σ modulator, successive approximation quantizer, flash quantizer, pipelined quantizer or other suitable oversampling quantizer. A customized buffer/amplifier may be inserted between an analog chopper and a signal processing chain. The customized buffer/amplifier is optimized for input noise and the signal chain compensates for poor DC performance. The result is a buffered analog-to-digital converter with both low input noise and very good DC accuracy.

REFERENCES:
patent: 4684925 (1987-08-01), Maruta
patent: 4704600 (1987-11-01), Uchimura et al.
patent: 4876542 (1989-10-01), van Bavel et al.
patent: 4876544 (1989-10-01), Kuraishi
patent: 5010347 (1991-04-01), Yukawa
patent: 5148167 (1992-09-01), Ribner
patent: 5396245 (1995-03-01), Rempfer
patent: 5450083 (1995-09-01), Brewer
patent: 5675334 (1997-10-01), McCartney
patent: 5870048 (1999-02-01), Kuo et al.
patent: 5982315 (1999-11-01), Bazarjani et al.
patent: 6037887 (2000-03-01), Wu et al.
patent: 6057793 (2000-05-01), Gong et al.
patent: 6169506 (2001-01-01), Oprescu et al.
patent: 6198417 (2001-03-01), Paul
patent: 6271782 (2001-08-01), Steensgaard-Madsen
patent: 6411242 (2002-06-01), Oprescu et al.
patent: 6639532 (2003-10-01), Liu et al.
patent: 6750796 (2004-06-01), Holloway et al.
patent: 6774822 (2004-08-01), Thomson
Damien McCartney et al., “A Low-Noise Low Drift Transducer ADC,” IEEE J. solid State Circuits, 32(7):959-967 (Jul. 1997).
Donald A. Kerth et al., “An Oversamplint Converter for Strain Gauge Transducers,” IEEE J. Solid State Circuits, 27(12): 1689-96 (Dec. 1992).
“16-Bit/20-Bit Multi-Range ADC x/4-Bit Latch,” Crystal Semiconductor Corporation 1996.

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