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CA3280

Intersil Corporation
Part Number CA3280
Manufacturer Intersil Corporation
Description Dual 9MHz Operational Transconductance Amplifier (OTA)
Published Mar 8, 2006
Detailed Description ® CA3280, CA3280A Data Sheet May 2002 FN1174.6 Dual, 9MHz, Operational Transconductance Amplifier (OTA) The CA3280 and...
Datasheet PDF File CA3280 PDF File

CA3280
CA3280

Overview
® CA3280, CA3280A Data Sheet May 2002 FN1174.
6 Dual, 9MHz, Operational Transconductance Amplifier (OTA) The CA3280 and CA3280A types consist of two variable operational amplifiers that are designed to substantially reduce the initial input offset voltage and the offset voltage variation with respect to changes in programming current.
This design results in reduced “AGC thump,” an objectionable characteristic of many AGC systems.
Interdigitation, or crosscoupling, of critical portions of the circuit reduces the amplifier dependence upon thermal and processing variables.
The CA3280 has all the generic characteristics of an operational voltage amplifier except that the forward transfer characteristics is best described by transconductance rather than voltage gain, and the output is current, not voltage.
The magnitude of the output current is equal to the product of transconductance and the input voltage.
This type of operational transconductance amplifier was first introduced in 1969, a...


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