Amplifiers – With control of power supply or bias voltage – With control of input electrode or gain control electrode bias
Patent
1986-12-30
1988-09-27
Wan, Gene
Amplifiers
With control of power supply or bias voltage
With control of input electrode or gain control electrode bias
330254, H03G 320
Patent
active
047744740
ABSTRACT:
A device is provided for amplifying and sampling multiplexed analog signals so as to give them an optimum level before digitization thereof. It includes several amplification and sampling assemblies with fixed gains differing from one to another, an amplifier whose gain is able to take on several predetermined values, connection means for selectively connecting one of the assemblies to said amplifier, comparison means comparing the amplitude of the signals at the output of the amplifier with threshold voltages and a selection member for choosing the assembly and the gain of the amplifier as a function of the comparison. In each of the assemblies, the amplification function is provided either by amplifier stages and/or by sample and hold units.
REFERENCES:
patent: 4554511 (1985-11-01), Braun
Beauducel Claude
Fouquet Pierre
Institut Francais du Pe'trole
Wan Gene
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