Analog-to-digital converter circuit having automatic range contr

Details Analog-to-digital converter circuit having automatic range contr Analog-to-digital converter circuit having automatic range contr

1991-12-06

1993-03-16

Pellinen, A. D.

Coded data generation or conversion

Analog to or from digital conversion

Detecting analog signal peak

341139, H03M 118

Patent

active

051948656

ABSTRACT:
An analog to digital converter circuit and technique including a peak detector circuit for generating a reference potential corresponding to a peak amplitude of the analog signal to be converted, a level shifting circuit for shifting the dc level of the analog signal in response to the reference potential, and an analog to digital converter for converting the shifted analog signal relative to the reference potential to provide automatically high bit resolution digital signals, independent of the magnitude of the input signal. Preferably, the level shifter sums one half the analog signal and one half the reference potential to produce the shifted signal, and the shifted signal is converted using a ratiometric analog to digital converter having a reference signal input of one half the reference potential. The reference potential is periodically updated by detecting a new peak. Analog signals containing amplitude modulated information may be so processed to provide effectively a dyanmic range corresponding to the input range of the analog to digital converter for optimum bit resolution.

REFERENCES:
patent: 3846710 (1974-11-01), Chapman
patent: 3979670 (1976-09-01), Vahaviolos
patent: 4001604 (1977-01-01), Parks et al.
patent: 4016557 (1977-04-01), Zitelli et al.
patent: 4517550 (1985-05-01), Nakamura et al.
patent: 4642694 (1987-02-01), Yamagishi et al.
patent: 4733221 (1988-03-01), Ishii
patent: 4751496 (1988-06-01), Araki et al.
patent: 4827191 (1989-05-01), Chapman
patent: 4851842 (1989-07-01), Iwamatsu
patent: 4890107 (1989-12-01), Pearce
patent: 5027117 (1991-06-01), Yoshida et al.
National Linear Data Book, vol. 2, Rev. 1 (no date given).

Affiliated with

Also associated with

Rating

Analog-to-digital converter circuit having automatic range contr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Analog-to-digital converter circuit having automatic range contr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analog-to-digital converter circuit having automatic range contr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-353729