Time-continuous sigma/delta analog-to-digital converter

Details Time-continuous sigma/delta analog-to-digital converter Time-continuous sigma/delta analog-to-digital converter

2006-11-28

2006-11-28

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000, C341S172000

Reexamination Certificate

active

07142143

ABSTRACT:
Time-continuous sigma/delta analog-to-digital converter for converting an analog input signal into a digital output signal (D), having at least one analog filter (3) which filters the analog input signal present at a signal input (2) of the analog filter (3), a quantizer (12) which is clocked by a clock signal (CLK) and quantizes the filtered analog signal, output by the analog filter (3), in order to generate the digital output signal (D), and having at least one reference capacitor (28) which can be continuously charged to a reference voltage (VREF) by a current source (31) for displacing a constant charge (Q) to/from the analog filter (3), such that no voltage jumps occur at the analog filter (3).

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Gerfers et al., “A Clock Jitter Insensitive Multibit DAC Architecture for High- Performance Low- Power Continuous-Time ΣΔ Modulators”, Proceedings of the 2003 10thIEEE Conference on Electronics, Circuits and Systems, Dec. 14-17, 2003, pp. 958-961, (4 pages).
Luh et al., “Feed Forward Gain Compensation for CMOS Continuous-Time ΣΔ Modulators”, 6thAnnual IEEE International Conference on Electronics, Circuits and Systems, Sep. 5-8, 1999, vol. 3, pp. 1685-1688.

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