Sampling device and circuit having a single voltage supply

Details Sampling device and circuit having a single voltage supply Sampling device and circuit having a single voltage supply

2011-01-04

2011-01-04

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S095000, C327S390000, C327S589000

Reexamination Certificate

active

07863943

ABSTRACT:
In embodiments of the present invention a device, circuit, and method are described for sampling input signal voltages, which may include voltages below a negative supply voltage for the device or circuit, without requiring static current from the input. Various embodiments of the invention obviate the requirement of an external negative supply voltage or attenuation resistors to allow sampling between a positive and negative voltage range. These embodiments result in a lower power sampling solution as well as simplifying any driver circuitry required by the sampler. The embodiments of the invention may be applied to sampling processes within analog-to-digital converters and may also be applicable to various other types of circuits in which a sampling input having input voltages that are lower than its negative supply voltage.

REFERENCES:
patent: 4734599 (1988-03-01), Bohac, Jr.
patent: 5945872 (1999-08-01), Robertson et al.
patent: 6255865 (2001-07-01), Opris
patent: 6310565 (2001-10-01), Ong et al.
patent: 7253675 (2007-08-01), Aksin et al.
patent: 2002/0089366 (2002-07-01), Gupta
patent: 2006/0202742 (2006-09-01), Aksin

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