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Texas Instruments OPA4310SIRTER — Analog & Data Acquisition

TI OPA4310SIRTER Quad Op-Amp, 3 MHz, 3 V/µs, 1.5-5.5 V

MPNOPA4310SIRTER
End of Life

Texas Instruments OPA4310SIRTER quad general-purpose op-amp, 3 MHz gain bandwidth, 3 V/µs slew rate, rail-to-rail output, 1.5 V to 5.5 V supply, 110 mA output per channel, 16-WQFN (3x3 mm), -40 to 125°C.

$1.94Ref. price · indicative, final on quote
Texas Instruments OPA4310SIRTER datasheet (PDF)
Packaging16-WFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA4310SIRTER specifications
ParameterValue
Output typePush-Pull, Rail-to-Rail
MountingSurface Mount
Amplifier typeGeneral Purpose
Voltage - input offset250 µV
Voltage - supply span5.5 V
Current - supply165µA (x4 Channels)
Current - input bias1 pA
Current - output (Channel)110 mA
Operating temperature-40°C ~ 125°C (TA)
Gain bandwidth product3 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate3V/µs
Case16-WFQFN Exposed Pad
Number of circuits4

Product details

Quad op-amp with 110 mA output drive in a 3x3 mm package

Each of the four channels can source or sink 110 mA, making this part suitable for driving ADC inputs, audio line outputs, or multiple loads from a single supply as low as 1.5 V up to 5.5 V.

It lets one channel drive a multiplexed ADC input, a headphone load, or a long cable without an external buffer. The 3 V/µs slew rate keeps distortion low for 1 Vpp signals up to about 100 kHz.

Package and footprint — 16-WQFN with exposed pad

The 16-WFQFN (3x3 mm) with exposed thermal pad requires a solder-paste stencil opening matching the pad dimensions for proper heat transfer. The pad must be connected to a ground plane or the negative supply rail; without the via stitch, continuous output current above 50 mA per channel may push junction temperature beyond the 125°C limit. Surface-mount assembly per standard QFN reflow profiles applies.

Frequently asked questions

What is the difference between OPA4310 and OPA4310SIRTER?

The OPA4310SIRTER suffix denotes the specific package and reel variant: 16-WQFN (3x3 mm) on Tape & Reel. The 'SIRTER' suffix is the TI ordering code for this package and reel format.

What is the closest functional second-source for OPA4310SIRTER?

The OPA4374AIPWT is a quad CMOS rail-to-rail op-amp in a similar supply range (2.7 V min) with 6.5 MHz GBW and 5 V/µs slew rate, but its output current is limited to 5 mA versus the OPA4310's 110 mA. For applications needing the high output drive, the OPA4310SIRTER has no direct pin-compatible second-source; verify the pinout and thermal pad layout before substituting.