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Texas Instruments OPA342UA/2K5 — Analog & Data Acquisition

TI OPA342UA/2K5 CMOS Op-Amp, 1 MHz, Rail-to-Rail Output

MPNOPA342UA/2K5
End of Life

Texas Instruments MicroAmplifier™ series OPA342UA/2K5, single CMOS op-amp, 1 MHz gain bandwidth, 1 V/µs slew rate, rail-to-rail output, 2.7 V to 5.5 V supply, 150 µA supply current, 8-SOIC package, -40°C to 85°C.

$0.41Ref. price · indicative, final on quote
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesMicroAmplifier™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA342UA/2K5 specifications
ParameterValue
SeriesMicroAmplifier™
Output typeRail-to-Rail
MountingSurface Mount
Amplifier typeCMOS
Voltage - input offset1 mV
Voltage - supply span5.5 V
Current - supply150µA
Current - input bias0.2 pA
Current - output (Channel)15 mA
Operating temperature-40°C ~ 85°C
Gain bandwidth product1 MHz
PackageBulk
Slew rate1V/µs
Case8-SOIC (0.154\", 3.90mm Width)
Number of circuits1

Product details

What the /2K5 suffix tells you about this reel

1 MHz GBW at 150 µA — the power-performance trade-off

The 1 MHz gain-bandwidth product means this op-amp can handle audio-band signals and slow sensor outputs (thermocouples, pressure transducers, photodiodes) with adequate closed-loop gain. The 150 µA supply current is the headline number for a BOM power budget: in a battery-operated design, that is roughly half the draw of a generic 1 MHz op-amp, which extends runtime without sacrificing rail-to-rail output swing. The input bias current of 0.2 pA is nearly negligible, so you can use high-impedance feedback networks without offset drift — useful for transimpedance amplifiers or precision integrators.

Industrial temperature range and deployment context

The CMOS input stage and rail-to-rail output let it interface directly with 3.3 V ADCs or microcontrollers without extra level shifting.

The part is ROHS3 compliant.

Frequently asked questions

What does the /2K5 suffix mean in OPA342UA/2K5?

The /2K5 suffix indicates a 2500-unit Tape & Reel quantity. The part ships on a standard 13-inch reel; the 'Bulk' entry in the package field is a catalog artifact and does not reflect the actual shipping medium.

Can OPA342UA/2K5 be used in single-supply applications?

Yes.

What are the direct substitutes or equivalent parts for OPA342UA/2K5?

A close functional peer is the OPA4374AIPWT, a quad CMOS op-amp with 6.5 MHz GBW and 5 V/µs slew rate, also rail-to-rail output. It draws 600 µA per channel and operates up to 125°C. The OPA342UA/2K5 is a single-channel, lower-power alternative at 150 µA and 1 MHz GBW. Pin compatibility differs — the OPA4374 is a quad in a different package — so a direct drop-in replacement is not available, but the OPA4374 can serve as a higher-speed, higher-temperature alternative if the design can accommodate the quad footprint and higher supply current.