High speed sampling and digitizing system requiring no hold circ

Details High speed sampling and digitizing system requiring no hold circ High speed sampling and digitizing system requiring no hold circ

1990-12-06

1992-07-28

Logan, Sharon D.

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

341122, H03M 136

Patent

active

051344033

ABSTRACT:
Disclosed is an analog to digital conversion system that converts high speed analog signals to digital values without using a hold circuit. The system has a narrow aperture sampling circuit that samples an input signal and feeds the sampled signal to a capacitor. A resistor in parallel with the capacitor discharges the capacitor at a predetermined rate, thus the capacitor does not hold the sampled signal. The discharging signal output of the capacitor-resistor circuit is amplified and then filtered using a low-pass filter, which has essentially linear phase shift and no undershoot. The filtered signal is then amplified and fed to a flash analog to digital converter which converts the signal into a digital value. The low-pass filter creates a Gaussian output and the converter is timed to convert the signal at the peak of the filter output.

REFERENCES:
patent: 3430072 (1969-02-01), Stevens
patent: 3581305 (1971-05-01), Howlett
patent: 3820033 (1974-06-01), Iwata
patent: 4183016 (1980-01-01), Sawagata
patent: 4584559 (1986-04-01), Penney
Hnatek, Eugene R., A User's Handbook of D/A and A/D Converters, pp. 369-374, 1976.
"A 1-GHz 6-bit ADC System", Ken Poulton et al., IEEE Journal of Solid State Circuits, vol. SC-22, No. 6, Dec. 1987, pp. 962-970.
"A Complete Monolithic Sample/Hold Amplifier", Kenneth R. Stafford et al., IEEE Journal of Solid State Circuits, vol. SC-9, No. 6, Dec. 1974, pp. 381-387.

Affiliated with

Also associated with

Rating

High speed sampling and digitizing system requiring no hold circ does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High speed sampling and digitizing system requiring no hold circ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed sampling and digitizing system requiring no hold circ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1689313