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Texas Instruments INA280A5IDCKR — Logic ICs

TI INA280A5IDCKR Current Sense Amplifier, 800 kHz, SC-70-5

MPNINA280A5IDCKR
End of Life

Texas Instruments INA280A5IDCKR, Current Sense Amplifier, 1 Circuit, 800 kHz Gain Bandwidth, 2V/µs Slew Rate, 2.7-20 V Supply, SC-70-5, -40 to 125°C.

$2.46Ref. 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

INA280A5IDCKR 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 product800 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate2V/µs
Case5-TSSOP, SC-70-5, SOT-353
Number of circuits1

Product details

The 800 kHz gain-bandwidth product gives you enough bandwidth for DC load monitoring, motor current loops, and battery-charge sensing, but it is not a wideband part for fast transient capture — the 2 V/µs slew rate sets that expectation. The 15 µV input offset is low for this class, so you can resolve milliohm-level shunt drops without a large error term.

15 µV offset and 20 µA input bias — what they mean across a real shunt

The 15 µV input offset is the dominant error at low shunt voltages. For a 1 mΩ shunt carrying 1 A, the sense voltage is 1 mV — the offset adds 1.5% error before any gain-stage drift. The 20 µA input bias current flows through the shunt itself, creating an additional voltage drop: across a 1 mΩ shunt, that is 20 nV, negligible; across a 100 mΩ shunt, it is 2 mV, which is larger than the offset. If your shunt is in the tens of milliohms or higher, budget the bias-current term in your system accuracy calculation. The 370 µA supply current is modest enough for always-on monitoring in battery-powered gear.

The ROHS3 compliance is current — no exemption-driven redesign required.

Frequently asked questions

Can INA280A5IDCKR replace INA280A3IDCKR?

The INA280A5IDCKR and INA280A3IDCKR share the same SC-70-5 footprint and pinout — they are gain-grade variants within the INA280 family. The A5 version has a fixed gain of 100 V/V, while the A3 is a different gain option. Check the gain setting against your shunt and ADC input range before swapping; the pin-compatibility is there, but the transfer function changes.

Is INA280A5IDCKR available in tape and reel?

Yes, the INA280A5IDCKR is offered in Tape & Reel (TR) packaging, as well as Cut Tape (CT) for smaller quantities. The reel format is standard for automated pick-and-place assembly.