OPA2132U/2K5G4

Instrumentation, Op Amps, Buffer Amps Overview

The OPA2132U/2K5G4 is a dual-channel high-speed FET-input operational amplifier manufactured by Texas Instruments. It features an 8MHz gain bandwidth product and a slew rate of ±20V/µs, ensuring fast settling times. The device operates within a supply voltage range of ±2.5V to ±18V (single supply 5V to 36V). Key electrical characteristics include a maximum input offset voltage of 500µV, low noise density of 8nV/√Hz at 1kHz, and low input bias current of 50pA maximum. It is housed in an 8-pin SOIC package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• FET input architecture providing ultra-low input bias current for minimal loading on high-impedance sources.
• High slew rate and wide bandwidth deliver fast settling time and excellent dynamic performance.
• Input cascode circuitry prevents output phase inversion when common-mode voltage limits are exceeded.
• Independent channel design ensures isolation and prevents interaction between amplifiers under overload conditions.

Instrumentation, Op Amps, Buffer Amps Applications

• SAR ADC driver
• Voltage reference buffer
• Trans-impedance amplifier
• Photodiode amplifier
• Active filter

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the ordering suffix /2K5G4 corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Confirm that the G4 designation aligns with the RoHS compliance standards mandated by your manufacturing facility. Ensure the component matches the 8-pin SOIC footprint dimensions specified in the mechanical drawings before finalizing procurement orders.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring high source impedance compatibility due to its JFET input stage. The dual-channel configuration offers design flexibility compared to single or quad versions while maintaining identical specifications across the family. Consider the thermal resistance metrics if operating near the upper temperature limits or driving heavy capacitive loads.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the OPAx132 series of high-speed operational amplifiers from Texas Instruments. The series includes single (OPA132), dual (OPA2132), and quad (OPA4132) variants designed for general-purpose, audio, data-acquisition, and communications applications. All versions share identical electrical specifications to maximize design interchangeability.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The datasheet identifies the OPA2156 as a newer version of this device offering lower broadband noise and wider bandwidth.

Instrumentation, Op Amps, Buffer Amps FAQ

Does the OPA2132 exhibit output phase reversal?

No, the OPA2132 utilizes input cascode circuitry to remain free from unexpected output phase reversal, even when the input common-mode voltage range is exceeded.

Is the OPA2132 stable in unity gain configurations?

Yes, the OPA2132 is unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions.