OPA131U/2K5

Instrumentation, Op Amps, Buffer Amps Overview

The OPA131U/2K5 is a single-channel, low-noise operational amplifier manufactured by Texas Instruments. It utilizes JFET input technology to achieve high performance in precision applications. The device operates within a supply voltage range of 4.5 V to 36 V (single) or ±2.25 V to ±18 V (dual). Key electrical specifications include a gain-bandwidth product of 1 MHz, a slew rate of 3.5 V/µs, and an input offset voltage of 10 mV. It features low input bias current of 100 pA and input noise current density of 1.2 fA/√Hz. The component is housed in an SOIC-8 package and supports tape-and-reel packaging.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• JFET input stage provides extremely low input bias current and noise current density for minimal signal loading.
• Low voltage noise density ensures high fidelity in sensitive analog signal paths.
• Wide supply voltage range accommodates diverse single-supply and dual-supply system architectures.

Instrumentation, Op Amps, Buffer Amps Applications

• Precision audio preamplifiers
• Instrumentation amplifier inputs
• Active filter circuits

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the exact part number suffix against official Texas Instruments documentation to confirm package type and reel quantity. Ensure compatibility with moisture sensitivity level requirements during storage and handling. Confirm RoHS compliance status for specific manufacturing lots prior to integration into final assemblies.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when low input bias current and low noise are critical design constraints. Compare gain-bandwidth and slew rate requirements against application signal frequencies. Evaluate thermal management needs based on the SOIC-8 package power dissipation capabilities within the target operating temperature range.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the OPA131 family of general-purpose FET-input operational amplifiers. It shares architectural similarities with other members like the OPA2131 (dual channel) and OPA4131 (quad channel), offering consistent performance characteristics across the series while varying in channel count and package options.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct pin-compatible substitutes within the same family include OPA131UA and OPA131DR. Verify that alternative packages maintain identical electrical parameters and thermal performance for seamless integration without circuit redesign.