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Texas Instruments INA190A1IDDFT — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

TI INA190A1IDDFT Current Sense Amplifier, Zero-Drift, 45 kHz

MPNINA190A1IDDFT
End of Life

Texas Instruments Zero-Drift series, INA190A1IDDFT current sense amplifier, 1 circuit, 45 kHz bandwidth, 0.3 V/µs slew rate, rail-to-rail output, 1.7 V to 5.5 V supply, 48 µA supply current, 3 µV offset, TSOT-23-8 package, -40°C to 125°C.

$3.51Ref. price · indicative, final on quote
INA190A1IDDFT datasheet
PackagingSOT-23-8
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

INA190A1IDDFT Technical Specifications
ParameterValue
SeriesZero-Drift
Output typeRail-to-Rail
Mounting typeSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset3 µV
Voltage - supply span5.5 V
Current - supply48µA
Current - input bias500 pA
Operating temperature-40°C ~ 125°C (TA)
Gain bandwidth product45 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate0.3V/µs
CaseSOT-23-8
Number of circuits1

Product details

Current sense amp for precision shunt monitoring

The Texas Instruments INA190A1IDDFT is a single-channel Zero-Drift current sense amplifier in a TSOT-23-8 package. It monitors current via an external shunt resistor and outputs a voltage proportional to the sensed current.

45 kHz bandwidth — what it means for the loop

The 45 kHz gain-bandwidth product sets the usable frequency range for current sensing. For DC or low-frequency load monitoring (battery charge/discharge, motor phase current at low PWM rates), this is adequate. For high-side switching at hundreds of kHz, the bandwidth limits the response — the output will not track fast transients. The 0.3 V/µs slew rate reinforces that this is a precision, not a high-speed, part.

Package and mounting

Surface-mount TSOT-23-8, 8-lead. The small footprint fits tight layouts near the shunt resistor. The supplier device package is TSOT-23-8; the generic package/case is SOT-23-8 — same land pattern, different supplier designator. Both are standard for this class of current-sense amp.

Frequently asked questions

What is the bandwidth of INA190A1IDDFT?

45 kHz gain-bandwidth product. Suitable for DC and low-frequency current sensing.

What are the equivalents of INA190A1IDDFT?

The INA254A1IPWAR is a higher-bandwidth Zero-Drift current sense amp (350 kHz, 2.4 V/µs slew rate) in a different package. For a drop-in functional match within the same INA190 family, the INA190A2IDDFT offers a different gain option but same pinout and package.

INA190A1IDDFT vs INA190A2IDDFT difference?

The INA190A1IDDFT has a gain of 25 V/V; the INA190A2IDDFT has a gain of 50 V/V. Both share the same TSOT-23-8 package, pinout, supply range, and temperature grade. The choice depends on the shunt value and desired output swing.