Intersil CA3280
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. 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.| Part No. | CA3280 |
|---|---|
| Datasheet | CA3280 Download |
| Manufacturer |  Intersil |
| Description | Dual 9MHz Operational Transconductance Amplifier (OTA) |
| Buy | Stock & Price |
FEATURES
● Low Initial Input Offset Voltage: 500µV (Max) (CA3280A)● Low Offset Voltage Change vs IABC: <500µV (Typ) for All Types
● Low Offset Voltage Drift: 5µV/oC (Max) (CA3280A)
● 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● Voltage Controlled Oscillators
● Multipliers Pinout CA3280 (PDIP) TOP VIEW ID, A1 1 EMITTER, A1 2 IABC, A1 3 V- 4 NC 5 IABC, A2 6 EMITTER, A2 7 ID, A2 8 A1 + 16 +IN, A1 - w w A2 w 15 -IN, A1 14 V+, A1 .D t a S a e h
● Demodulators
● Sample and Hold
● Instrumentation Amplifiers
● Function Generators
● Triangle Wave-to-Sine Wave Converters
● Comparators
● Audio Preamplifier t e U 4 .c m o Functional Diagram 1/2 CA3280 14 11 13 OUT, A1 12 OUT, A2 11 V+, A2 10 -IN, A2 9 +IN, A2 + 16 - 15 10 + 9 2K 1 2K Ordering Information PART NUMBER CA3280AE CA3280E TEMP.
