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INA240A4DR

TI INA240A4DR Current Sense Amplifier, 400 kHz, 8-SOIC

MPNINA240A4DR
Active

Texas Instruments INA240A4DR, current sense amplifier, 1 circuit, 400 kHz -3 dB bandwidth, 2 V/µs slew rate, 5 µV input offset, 2.7 V to 5.5 V supply, -40°C to 125°C, 8-SOIC package.

$3.3900Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

INA240A4DR specifications
ParameterValue
MountingSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset5 µV
Voltage - supply span5.5 V
Current - supply1.8mA
Current - input bias90 µA
Operating temperature-40°C~125°C
-3db bandwidth400 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate2V/µs
Case8-SOIC (0.154\", 3.90mm Width)
Number of circuits1

Product details

400 kHz bandwidth — fast enough for motor currents, not for switch-node edges

Its 400 kHz -3 dB bandwidth and 2 V/µs slew rate make it suited for monitoring DC and low-frequency AC load currents in motor drives, solenoids, and power supply rails — but the bandwidth is too low to capture fast switching transients in a buck converter's inductor current. Input offset voltage is 5 µV typ, which keeps the measurement error negligible when sensing across a 10 mΩ shunt at a 1 A load — the offset contributes just 0.05% error on a 10 mV drop. Quiescent current is 1.8 mA, light enough for always-on sensing in battery-powered equipment.

Package and temperature — rework-friendly and thermally capable

The part is surface-mount, so it needs a solder profile, not a socket.

Frequently asked questions

What is the INA240A4DR bandwidth?

The -3 dB bandwidth is 400 kHz, suitable for DC and low-frequency AC current sensing but not for capturing fast switching transients.