Amplifier circuit with input error compensation
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United States of America Patent
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-
Sep 8, 1992
Grant Date -
N/A
app pub date -
Dec 17, 1990
filing date -
Apr 19, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An analogue amplifier circuit has a gain stage comprising two differential operational amplifers (17, 18) and an error correction stage comprising two differential operational amplifiers (20, 21) each connected with its inputs across the inputs of a respective gain stage amplifier and its output connected to the non-inverting input of the other gain stage amplifier. A balanced output from the outputs of the two gain stage amplifiers (17, 18) may be provided or these two outputs may be fed to a final stage amplifier (22) to provide a single output.
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