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Texas Instruments OPA3691IDBQT — Analog & Data Acquisition

TI OPA3691IDBQT Current Feedback Op Amp, 2100V/µs Slew Rate

MPNOPA3691IDBQT
End of Life

Texas Instruments OPA3691IDBQT, triple current-feedback operational amplifier, 280 MHz bandwidth, 2100 V/µs slew rate, 190 mA output per channel, 5 V to 12 V supply, 16-SSOP package, -40°C to 85°C.

$11.3Ref. price · indicative, final on quote
Packaging16-SSOP (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA3691IDBQT specifications
ParameterValue
MountingSurface Mount
Amplifier typeCurrent Feedback
Voltage - input offset800 µV
Voltage - supply span12 V
Current - supply15.3mA
Current - input bias5 µA
Current - output (Channel)190 mA
Operating temperature-40°C ~ 85°C
-3db bandwidth280 MHz
Gain bandwidth product280 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate2100V/µs
Case16-SSOP (0.154\", 3.90mm Width)
Number of circuits3

Product details

Triple current-feedback amp with 2100 V/µs — what the slew rate buys you

The Texas Instruments OPA3691IDBQT is a triple (three-circuit) current-feedback operational amplifier in a 16-SSOP surface-mount package. Its headline rating is a 2100 V/µs slew rate combined with 280 MHz gain-bandwidth and -3 dB bandwidth. Each of the three channels delivers 190 mA of output current, enough to drive 50-ohm or 75-ohm terminated cables directly without a separate line driver.

Package and supply — what to plan for on the board

Supply voltage is 5 V minimum, 12 V maximum. At 15.3 mA supply current per amplifier, the triple draws about 46 mA total — budget that on the rail.

Frequently asked questions

What is the OPA3691IDBQT slew rate?

The slew rate is 2100 V/µs, which means the output can change at 2100 volts per microsecond — fast enough for high-speed video, pulse, or RF signal chains.

What is the difference between OPA3691IDBQT and OPA3691IDBQ?

Electrically they are identical.

How does OPA3691IDBQT compare to other current feedback op amps?

Compared to a single-channel current-feedback amp like the THS4215DRBT (970 V/µs slew rate, 350 MHz bandwidth), the OPA3691IDBQT offers three channels in one package with a higher 2100 V/µs slew rate, making it a better fit for multi-channel high-speed designs where board space is tight.