Transcription of UNDERSTANDING AND USING ‘OTA’ OP-AMP ICs - …
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UNDERSTANDING AND USING ‘OTA’ OP-AMP ICs - …
Most popular OP-AMP (operational amplifier) ICs such as the 741, CA3140, and LF351, etc. give anoutput voltage that is proportional to the differencebetween the IC s two input pin voltages, and are thus known asvoltage-differencing amplifiers or VDAs. There are, however,two other basic types of op-amps that are in common use; oneof these is the type that gives an output voltage that is propor-tional to the difference between the currentsapplied to its twoinput terminals, and is thus known as a current-differencingamplifier or CDA. This type of OP-AMP was described in depthin the UNDERSTANDING and USING Norton OP-AMP ICs two-part mini-series published in this magazine.
M ost popular op-amp (operational amplifier) ICs — such as the 741, CA3140, and LF351, etc. — give an output voltage that is proportional to the difference
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