Three new parts in original tube. These were engineering samples that were never used. All handling for photography was at an ESD controlled work station. From the data sheet:
- FET INPUT: IB = 50pA max
- LOW OFFSET VOLTAGE: 750μV max
- WIDE SUPPLY RANGE: ±4.5V to ±18V
- SLEW RATE: 10V/μs
- WIDE BANDWIDTH: 4MHz
- EXCELLENT CAPACITIVE LOAD DRIVE
DESCRIPTION:
The OPA131 series of FET-input op amps provides high performance at low cost. Single, dual, and quad versions in industry-standard pinouts allow cost-effective design options. The OPA131 series offers excellent general-purpose performance, including low offset voltage, drift, and good dynamic characteristics.
APPLICATIONS INFORMATION:
The OPA131 series op amps are unity-gain stable and suitable for a wide range of general-purpose applications. Power-supply pins should be bypassed with 10nF ceramic capacitors or larger. The OPA131 series op amps are free from unexpected output phase-reversal common with FET op amps. Many FET-input op amps exhibit phase-reversal of the output when the input common-mode voltage range is exceeded. This can occur in voltage-follower circuits, causing serious problems in control-loop applications. All circuitry is completely independent in dual and quad versions, assuring normal behavior when one amplifier in a package is overdriven or shortcircuited.
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