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Texas Instruments OPA349SA/250 — Analog & Data Acquisition

OPA349SA/250 Op-Amp, 70 kHz GBW, 1 µA Supply, SC-70-5

MPNOPA349SA/250
End of Life

Texas Instruments OPA349SA/250, General Purpose Op-Amp, 1 Circuit, Rail-to-Rail Output, 70 kHz Gain Bandwidth, 0.02 V/µs Slew Rate, 1 µA Supply, SC-70-5 Package, 0°C to 70°C.

$1.75Ref. price · indicative, final on quote
Packaging5-TSSOP, SC-70-5, SOT-353
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA349SA/250 specifications
ParameterValue
Output typeRail-to-Rail
MountingSurface Mount
Amplifier typeGeneral Purpose
Voltage - input offset2 mV
Voltage - supply span5.5 V
Current - supply1µA
Current - input bias0.5 pA
Current - output (Channel)8 mA
Operating temperature0°C ~ 70°C
Gain bandwidth product70 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate0.02V/µs
Case5-TSSOP, SC-70-5, SOT-353
Number of circuits1

Product details

What this op-amp is built for

Its supply current of 1 µA is the defining spec — this is a part for battery-powered or energy-harvested circuits where every microamp is budgeted. The gain-bandwidth product of 70 kHz and slew rate of 0.02 V/µs are direct consequences of that 1 µA quiescent current; you trade speed for battery life. The SC-70-5 package fits tight PCB layouts — think sensor conditioning on a compact IoT node or a portable instrument's analog front-end.

That limits this part to indoor, office, or consumer environments. If your design lives in a conditioned space — a benchtop instrument, a home appliance, a medical monitor — the temperature grade is fine. For anything that sees -20°C or +85°C, you are looking at the wrong op-amp.

Frequently asked questions

Is OPA349SA/250 RoHS compliant?

Yes, it is ROHS3 compliant — fully lead-free with no exemptions.

What is the OPA349SA/250 replacement?

There is no official replacement listed. The part is active and in production, so no replacement is needed. For a functionally different part with higher speed, consider the TLV9351IDCKR (3.5 MHz GBW, 20 V/µs slew rate) but note its supply current is 600 µA — a different power class entirely.