Analog/digital converter with digital automatic gain control

Details Analog/digital converter with digital automatic gain control Analog/digital converter with digital automatic gain control

1993-06-25

1994-08-30

Hoff, Marc S.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341159, H03M 118

Patent

active

053432002

ABSTRACT:
Analog data which enters an analog/digital converter 401 is converted into corresponding digital data. The resulting digital data is outputted upon being shifted by a bit shifting circuit. The latter shifts the digital by a number of bits set in a bit-shift quantity setting register. As a result, automatic gain control can be performed by relying on simple processing without using an amplifier consisting of complicated analog circuitry. For example, by setting a "+1" bit in the bit-shift quantity setting register, the data resulting from the A/D conversion can be doubled. The data can be multiplied by eight if a "3" bit is set, and by 1/4 if a "-2" bit is set.

REFERENCES:
patent: 4625240 (1986-11-01), Yablonski et al.
patent: 4851842 (1989-07-01), Iwamatsu
patent: 4876502 (1989-10-01), Verbanets et al.
patent: 4910515 (1990-03-01), Iwamatsu
patent: 4990913 (1991-02-01), Beauducel

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