General Description
The AS3280 and AS3280A 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. Careful design of critical places of the circuit reduces the amplifier dependence upon thermal and processing variables.

FEATUREs
• Low Initial Input Offset Voltage: 500µV (Max) (AS3280A)
• Low Offset Voltage Change vs IABC: <500 µV (Typ)
• Low Offset Voltage Drift: 5µV/°C (Max) (AS3280A)
• Excellent Matching of the Two Amplifiers for All
   Characteristics
• Internal Current-Driven Linearizing Diodes Reduce the
   External Input Current to an Offset Component
• Flexible Supply Voltage Range ±2V to ±15V

APPLICATIONs
• Voltage Controlled Amplifiers Oscillators
   Multipliers
• Demodulators
• Sample and Hold
• Instrumentation Amplifiers
• Function Generators
• Triangle Wave-to-Sine Wave Converters
• Comparators
• Audio Preamplifier