Control circuit for signal level

Details Control circuit for signal level Control circuit for signal level

1992-03-31

1993-04-27

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

358176, H03F 345, H04N 552

Patent

active

052066061

ABSTRACT:
In a signal level control circuit a gain of a current obtained by converting an input signal is controlled by an external control signal in order to automatically control the level of the input signal. The potential of a resistor with a temperature characteristic is set by a voltage determined by the product of an external reference current and an internal resistance so that the temperature characteristic of a current output through the resistor with the temperature characteristic can be removed.

REFERENCES:
patent: 4658297 (1987-04-01), Nomura et al.

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