Unfolding VCO-based quantization circuit

Details Unfolding VCO-based quantization circuit Unfolding VCO-based quantization circuit

2009-07-30

2011-11-22

Lauture, Joseph (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000

Reexamination Certificate

active

08063810

ABSTRACT:
Apparatus and methods are provided for a voltage-controlled oscillator (VCO) quantization circuit. A quantization circuit comprises an input node for an input signal, a VCO quantizer coupled to the input node, and an output generation module coupled to the VCO quantizer. The VCO quantizer is configured to generate a digital code that is representative of the input signal, wherein the digital code has a first code range. The output generation module generates a digital output value based on the digital code, wherein the digital output value has a second code range being greater than the first code range.

REFERENCES:
patent: 6700520 (2004-03-01), Miller
patent: 2002/0186804 (2002-12-01), Dorschky et al.
patent: 2007/0139240 (2007-06-01), Mitteregger et al.
Straayer, M., et al., “A 12-Bit, 10-MHz Bandwidth, Continuous-Time ADC With a 5-Bit, 950-MS/s VCO-Based Quantize,” in IEEE J. Solid-State Circuits, vol. 43, No. 4, pp. 805-814, Apr. 2008.

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