Electronic device and integrated circuit comprising a...

Details Electronic device and integrated circuit comprising a... Electronic device and integrated circuit comprising a...

2011-06-28

2011-06-28

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000

Reexamination Certificate

active

07969339

ABSTRACT:
An integrated circuit comprises a delta-sigma modulator incorporating a delta-sigma modulation loop having an analog-to-digital converter in a forward path and a digital-to-analog converter in a feedback path such that the ADC is arranged to receive samples of an analog input signal. The ADC is operably coupled to auto-ranging logic arranged to shift a digital output signal from the ADC representative of the analog input signal to counteract an effect of an input variation of the analog input signal. In this manner, the application of auto-ranging logic with a self-recovery technique supports a reduction of the number of comparators required in a multi-bit delta-sigma ADC.

REFERENCES:
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patent: 102004030812 (2005-09-01), None
patent: 1480342 (2004-11-01), None
Lu; “A novel signal-predicting multibit delta-sigma modulator” Proceedings of the 2004 11th IEEE International Conference on Electronics, Circuits and Systems, 2004. ICECS 2004. Dec. 13-15, 2004 pp. 105-108.
Grilo et al; “A 12mW ADC Delta-Sigma Modulator with 80dB of Dynamic range Integrated in a single-chip Bluetooth Transceiver”; IEEE JSSC, vol. 37, No. 3.
Petrie et al; “Multi-bit Sigma-Delta ADC”; Motorola Data Converter Conference, Jul. 2001.

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