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Texas Instruments INA280A3QDCKRQ1 — Logic ICs

TI INA280A3QDCKRQ1 Current Sense Amplifier, 1.1 MHz, SC-70-5

MPNINA280A3QDCKRQ1
End of Life

Texas Instruments INA280A3QDCKRQ1, Current Sense Amplifier, 1 Circuit, SC-70-5, 2V/µs slew rate, 1.1 MHz GBP, 15 µV offset, 370 µA supply, -40°C to 125°C.

$2.91Ref. price · indicative, final on quote
Packaging5-TSSOP, SC-70-5, SOT-353
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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

INA280A3QDCKRQ1 Technical Specifications
ParameterValue
Mounting typeSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset15 µV
Voltage - supply span2.7 V
Current - supply370µA
Current - input bias20 µA
Operating temperature-40°C ~ 125°C (TA)
Gain bandwidth product1.1 MHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate2V/µs
Case5-TSSOP, SC-70-5, SOT-353
Number of circuits1

Product details

Its 1.1 MHz gain-bandwidth product and 2 V/µs slew rate support fast transient capture in motor-drive and solenoid-control loops, while the 15 µV input offset keeps the error budget tight for sub-10 mΩ shunts.

A 2.7 V minimum supply lets this part run from a 3.3 V rail with headroom for the cold-crank dip; the 20 V maximum covers 12 V and 24 V automotive and industrial buses without an external regulator. The 15 µV offset translates to roughly 0.15% error on a 10 mV shunt signal — good enough for a 50 A load with a 200 µΩ shunt. The 370 µA supply current is a secondary concern in most power-train designs but matters in always-on battery-monitoring nodes.

Package and mounting — SC-70-5 footprint reality

The SC-70-5 (SOT-353) package is a 5-pin surface-mount case about 2 mm × 2.1 mm. The small footprint saves board area but demands careful soldering — the thermal pad is absent, so all heat dissipates through the leads.

Frequently asked questions

What is the closest functional equivalent to the INA280A3QDCKRQ1?

The INA4290A2IRGVR is a four-channel current-sense amplifier in the same family, but it is not a pin-compatible drop-in — the INA280A3QDCKRQ1 is a single-channel device in a 5-pin SC-70 package. For a single-channel replacement, stay within the INA280 series; no exact second-source alternate is listed.