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Texas Instruments INA181A4QDBVRQ1 — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

INA181A4QDBVRQ1 Current Sense Amplifier, AEC-Q100, 105 kHz

MPNINA181A4QDBVRQ1
End of Life

Texas Instruments INA181A4QDBVRQ1, automotive AEC-Q100 current sense amplifier, single circuit, rail-to-rail output, 105 kHz gain bandwidth, 2 V/µs slew rate, 2.7-5.5 V supply, SOT-23-6 package, -40 to 125°C.

$0.66Ref. price · indicative, final on quote
INA181A4QDBVRQ1 datasheet
PackagingSOT-23-6
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

INA181A4QDBVRQ1 Technical Specifications
ParameterValue
SeriesAutomotive, AEC-Q100
Output typeRail-to-Rail
Mounting typeSurface Mount
Amplifier typeCurrent Sense
Voltage - input offset100 µV
Voltage - supply span5.5 V
Current - supply195µA
Current - input bias75 µA
Current - output (Channel)8 mA
Operating temperature-40°C ~ 125°C (TA)
Gain bandwidth product105 kHz
PackageTape & Reel (TR); Cut Tape (CT)
Slew rate2V/µs
CaseSOT-23-6
Number of circuits1

Product details

What this current sense amplifier does on the board

The Texas Instruments INA181A4QDBVRQ1 is a single-channel current sense amplifier with a rail-to-rail output, packaged in a SOT-23-6. It's built for the automotive temperature range (-40°C to 125°C) and carries AEC-Q100 qualification, so it's suited for under-hood and chassis-domain current monitoring — think motor winding current, solenoid hold current, or battery-load sensing in an ECU. The 105 kHz gain-bandwidth product means it can track DC load changes and low-frequency ripple, but it won't resolve switching edges in a PWM drive above a few kHz. That's fine for overcurrent detection and average-current feedback loops.

105 kHz bandwidth — what it means for your measurement

Gain-bandwidth product is 105 kHz and slew rate is 2 V/µs. The rail-to-rail output uses the full ADC input range.

Supply and quiescent current

Supply span is 2.7 V to 5.5 V. Quiescent current is 195 µA typical.

Frequently asked questions

Is INA181A4QDBVRQ1 equivalent to INA181A4IDBVR?

The INA181A4QDBVRQ1 is the automotive-qualified (AEC-Q100) version of the INA181A4IDBVR. The non-Q version lacks the automotive temperature range and qualification. Functionally they are the same current sense amplifier, but the Q-suffix part is specified for -40°C to 125°C operation and is built to automotive reliability standards.

What is the pinout of INA181A4QDBVRQ1?

The INA181A4QDBVRQ1 comes in a SOT-23-6 package. Pin 1 is the output, pin 2 is GND, pin 3 is the negative input, pin 4 is the positive input, pin 5 is V+, and pin 6 is the reference voltage input. The pin 1 indicator is a dot on the top of the package.