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Texas Instruments INA293B4QDBVRQ1 — Logic ICs
Texas Instruments

INA293B4QDBVRQ1 Current Sense Amplifier, AEC-Q100, 900 kHz

MPNINA293B4QDBVRQ1
End of Life

Texas Instruments INA293B4QDBVRQ1, Automotive AEC-Q100, Current Sense Amplifier, 1 Circuit, 900 kHz -3dB Bandwidth, 2.5V/µs Slew Rate, 2.7V to 20V Supply, SOT-23-5.

$3.66Ref. price · indicative, final on quote
INA293B4QDBVRQ1 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

INA293B4QDBVRQ1 Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Mounting typeSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset5 µV
Voltage - supply span2.7 V
Current - supply1.5mA
Current - input bias20 µA
Operating temperature-40°C ~ 125°C (TA)
-3db bandwidth900 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate2.5V/µs
CaseSC-74A, SOT-753
Number of circuits1

Product details

What the 900 kHz bandwidth buys you

The INA293B4QDBVRQ1: A 900 kHz -3 dB bandwidth means this amplifier can track current waveforms in switching regulators switching at a few hundred kilohertz, or in motor-drive PWM cycles up to the tens-of-kHz range, without significant gain roll-off. For a 100 kHz switching supply, the closed-loop gain stays flat within a fraction of a dB — the phase shift at those frequencies is low enough to keep the current-loop response predictable. If your application runs above 300 kHz switching, budget for the bandwidth limit when sizing the sense resistor and the feedback network.

The SOT-23-5 package is surface mount.

Frequently asked questions

Can INA293B4QDBVRQ1 be used for high-side current sensing?

Yes, this current-sense amplifier supports both high-side and low-side sensing. The supply voltage range of 2.7 V to 20 V covers typical automotive battery rails (12 V, 24 V). The 5 µV input offset allows accurate measurement with small shunt drops, minimizing power loss in the sense resistor.

What is the difference between INA293B4QDBVRQ1 and INA293B3QDBVRQ1?

The difference is in the gain version. The '' suffix denotes a specific gain setting within the INA293 family. Both share the same SOT-23-5 package, AEC-Q100 qualification, and supply range. The exact gain value is listed in the datasheet's gain table; select the variant whose full-scale output matches your ADC input range.