Analog-to-digital converting apparatus having an automatic gain

Details Analog-to-digital converting apparatus having an automatic gain Analog-to-digital converting apparatus having an automatic gain

1987-11-09

1989-05-16

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341138, 341155, 358174, 358179, H03M 118

Patent

active

048313785

ABSTRACT:
An analog-to-digital converting apparatus includes an analog controllable gain amplifier (A.sub.1) connected to an input of an analog-to-digital converter A/N. A gain control signal of the amplifier (A.sub.1) is obtained from at least one comparator (D16, D240, D224) for making a binary comparison between an output level of the analog-to-digital converter (A/N) and at least one predetermined threshold, and circuitry (SEL2, S.sub.2, I.sub.2) for controlling with respect to time the gain of the amplifier (A.sub.1) as a function of the result of the comparison.

REFERENCES:
patent: 3971015 (1976-07-01), Hornak
patent: 4058808 (1977-11-01), Malaviya
patent: 4078233 (1978-03-01), Frye
patent: 4589034 (1986-05-01), Yokomizo

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