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Texas Instruments INA190A2IDDFR — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

INA190A2IDDFR Current Sense Amplifier, Zero-Drift, 37 kHz

MPNINA190A2IDDFR
End of Life

Texas Instruments Zero-Drift series, INA190A2IDDFR current sense amplifier, single circuit, 37 kHz gain-bandwidth, 0.3 V/µs slew rate, rail-to-rail output, 1.7 V to 5.5 V supply, TSOT-23-8 package, -40°C to 125°C.

$2.92Ref. price · indicative, final on quote
INA190A2IDDFR 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.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

INA190A2IDDFR 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 product37 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate0.3V/µs
CaseSOT-23-8
Number of circuits1

Product details

What this current sense amplifier does

The Texas Instruments INA190A2IDDFR is a single-channel, zero-drift current sense amplifier in a TSOT-23-8 package. It measures the voltage drop across a shunt resistor and outputs a rail-to-rail voltage proportional to the load current.

Where it fits in a design

This part is built for high-side or low-side current sensing. The rail-to-rail output means the amplifier can swing its output close to the supply rails, preserving dynamic range when the shunt voltage is small. The -40°C to 125°C operating temperature covers industrial motor drives, outdoor telecom equipment, and automotive under-hood modules. The 48 µA supply current makes it a candidate for always-on monitoring in battery-powered systems — a fuel-gauge front end, for example, or a solar charge controller that needs to log current around the clock.

Package and mounting

The TSOT-23-8 package (supplier device package TSOT-23-8) is a surface-mount footprint. It is small enough for space-constrained PCBs but still hand-solderable with a fine tip.

Lifecycle and sourcing

The INA190A2IDDFR is listed as Active and ROHS3 compliant. No end-of-life notice or last-time-buy window is in effect. It is sourced through independent distribution and quoted to order against an RFQ.

Frequently asked questions

What is the typical application for INA190A2IDDFR?

This current sense amplifier is used for high-side or low-side current measurement in battery monitoring, motor current sensing, power-supply output monitoring, and solar charge controllers. Its zero-drift architecture and low 48 µA supply current suit always-on precision monitoring in industrial and automotive environments.

Is INA190A2IDDFR suitable for high-side current sensing?

Yes, the rail-to-rail output and wide common-mode input range (implied by the current-sense topology) make it suitable for high-side sensing. The 1.7 V to 5.5 V supply range and 3 µV offset support accurate measurements across the full shunt voltage range.