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Texas Instruments OPA703NA/3K — Analog & Data Acquisition

TI OPA703NA/3K General Purpose Op-Amp, 1 MHz GBW, SOT-23-5

MPNOPA703NA/3K
End of Life

Texas Instruments OPA703NA/3K, single general-purpose op-amp, 1 MHz gain bandwidth, 0.6 V/µs slew rate, rail-to-rail output, 160 µA supply, SOT-23-5 package, -40°C to 85°C.

$3.97Ref. price · indicative, final on quote
PackagingSC-74A, SOT-753
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA703NA/3K specifications
ParameterValue
Output typeRail-to-Rail
MountingSurface Mount
Amplifier typeGeneral Purpose
Voltage - input offset160 µV
Voltage - supply span12 V
Current - supply160µA
Current - input bias1 pA
Current - output (Channel)10 mA
Operating temperature-40°C ~ 85°C
Gain bandwidth product1 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate0.6V/µs
CaseSC-74A, SOT-753
Number of circuits1

Product details

Its 1 MHz gain-bandwidth product and 0.6 V/µs slew rate mean it handles audio-frequency signals and slow ADC drive cleanly, but it will visibly distort a 100 kHz square wave — keep the output swing modest if you need fast edges.

Rail-to-rail output and input bias — where it works and where it doesn't

The output swings rail-to-rail, so you get the full supply range into an ADC or comparator without losing headroom. Input common-mode range is not rail-to-rail on this family — the datasheet typical input range goes to about 1.5 V below the positive rail at 5 V supply, so high-side current sensing at 3.3 V single supply needs a different part. The 1 pA input bias current lets you interface directly to high-impedance sources like pH probes or photodiode amplifiers without an external JFET buffer. Supply range runs from 4 V to 12 V, which covers most 5 V and 12 V industrial rails but not 3.3 V systems.

Package and temperature — field-swap reality

Marking is typically a three-character code on the package body; orientation is standard with pin 1 at the top-left when the marking is read upright, so you can get it right without a magnifier on a good day.

Frequently asked questions

What is the closest functional second-source to OPA703NA/3K?

It fits the same SOT-23-5 footprint and rail-to-rail output.

Is OPA703NA/3K single or dual channel?

It is a single-channel op-amp — one amplifier in the SOT-23-5 package.