A/D converting apparatus

Details A/D converting apparatus A/D converting apparatus

2011-02-08

2011-02-08

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S156000, C341S162000, C341S163000, C341S172000

Reexamination Certificate

active

07884749

ABSTRACT:
An A/D converting apparatus includes a first A/D converter to sample an analog input signal having a D/A converter to generate a comparative signal for successive comparison with the analog input signal, a signal generator generate a differential signal between the analog input signal and the comparative signal, and a comparator to compare the comparative signal with a standard value to generate a first digital signal exhibiting high-order bit; an amplifier to amplify the differential signal to generate a residue signal; and a second A/D converter to sample the residue signal to generate a second digital signal exhibiting low-order bit.

REFERENCES:
patent: 6124818 (2000-09-01), Thomas et al.
patent: 6879277 (2005-04-01), Cai
patent: 6914550 (2005-07-01), Cai
Louwsma et al, A 1.35 GS/s, 10b, 175mW Time-Interleaved AD Converter in 0.13 um CMOS, 2007 Symposium on VLSI Circuits Digest of Technical Papers, pp. 62-63.

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