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Texas Instruments OPA1637DGKT — Analog & Data Acquisition

TI OPA1637DGKT Audio Op Amp, Differential Output, 8-VSSOP

MPNOPA1637DGKT
End of Life

Texas Instruments OPA1637DGKT audio differential op amp, 9.2 MHz gain bandwidth, 15 V/µs slew rate, 3 V to 36 V supply, 20 µV input offset, 8-VSSOP package, -40 to 125°C.

$3.53Ref. price · indicative, final on quote
Packaging8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA1637DGKT specifications
ParameterValue
Output typeDifferential
MountingSurface Mount
Amplifier typeAudio
Voltage - input offset20 µV
Voltage - supply span36 V
Current - supply950µA
Current - input bias200 pA
Current - output (Channel)31 mA
Operating temperature-40°C ~ 125°C (TA)
-3db bandwidth7 MHz
Gain bandwidth product9.2 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate15V/µs
Case8-TSSOP, 8-MSOP (0.118\", 3.00mm Width)
Number of circuits1

Product details

It delivers a 9.2 MHz gain-bandwidth product with a 15 V/µs slew rate, enough to handle full audio bandwidth with margin for anti-aliasing filtering ahead of a sigma-delta ADC.

Supply span runs from 3 V to 36 V. Each output channel can source or sink 31 mA.

DC precision and temperature range

Input offset voltage is 20 µV typical. Input bias current is 200 pA.

Package and sourcing note

The 8-VSSOP footprint is 3.00 mm wide, a common land pattern for audio signal-chain designs. Lifecycle status is Active, so no near-term last-time-buy risk for new designs.

Frequently asked questions

Is OPA1637DGKT a differential output op-amp?

Yes, the output type is differential. It is designed to drive the differential input of an audio ADC or codec directly.

What is the typical application of OPA1637DGKT?

It is an audio amplifier used as a differential driver between a DAC or analog source and a differential-input audio ADC, common in professional audio, automotive infotainment, and active speaker systems.

What is the closest functional equivalent to OPA1637DGKT from another brand?

There is no pin-compatible direct second-source listed. The TLV9351IDCKR is a general-purpose single op amp in a similar package but has rail-to-rail output, not differential output — it is not a functional substitute for driving an ADC differentially. The OPA859QDSGRQ1 is also differential-output but is a 900 MHz JFET amp with much higher speed and current, aimed at a different application tier.