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Texas Instruments INA293B3QDBVRQ1 — Logic ICs
Texas Instruments

TI INA293B3QDBVRQ1 Current Sense Amplifier, AEC-Q100, 1 MHz

MPNINA293B3QDBVRQ1
End of Life

Texas Instruments INA293B3QDBVRQ1, Automotive AEC-Q100, Current Sense Amplifier, 1 Circuit, 1 MHz -3dB Bandwidth, 2.5V/µs Slew Rate, 10 µV Offset, 2.7V to 20V Supply, SOT-23-5.

$3.66Ref. price · indicative, final on quote
INA293B3QDBVRQ1 datasheet
PackagingSC-74A, SOT-753
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

INA293B3QDBVRQ1 Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Mounting typeSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset10 µV
Voltage - supply span2.7 V
Current - supply1.5mA
Current - input bias20 µA
Operating temperature-40°C ~ 125°C (TA)
-3db bandwidth1 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate2.5V/µs
CaseSC-74A, SOT-753
Number of circuits1

Product details

Low offset and input bias for accurate shunt measurement

Input offset voltage is 10 µV typical, and input bias current is 20 µA. Together they allow the amplifier to resolve millivolt-level drops across a sense resistor — the kind of signal you see when monitoring a 10 mΩ shunt carrying a few hundred milliamps. The 1.5 mA supply current is modest enough to keep the thermal budget in check on a densely populated automotive ECU.

Package and mounting

Supplied in a SOT-23-5 package (SC-74A, SOT-753), surface-mount only. The five-pin footprint is common across many TI current-sense amplifiers, so a layout designed for one variant often accepts the INA293B3QDBVRQ1 without a board spin.

Product status is Active, with ROHS3 compliance.

Frequently asked questions

What is the closest functional equivalent to INA293B3QDBVRQ1?

The INA4290A2IRGVR is a quad-channel current sense amplifier with similar bandwidth (1.1 MHz) and offset (6 µV), but it comes in a different package and draws 1.3 mA per channel. For a single-channel replacement, the INA254A1IPWAR offers a zero-drift architecture with 350 kHz bandwidth and 2.4 V/µs slew rate, though its supply range and package differ. Neither is a direct pin-for-pin substitute — verify the footprint and supply rails before swapping.

Can INA293B3QDBVRQ1 be used for high-side current sensing?

Yes. As a current sense amplifier, it is designed to measure the voltage across a shunt resistor placed between the supply rail and the load (high-side) or between the load and ground (low-side). The wide supply range of 2.7 V to 20 V accommodates common automotive battery rails.