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Product Detailed Parameters
- Description：AEC-Q100, 26V, BI-DIRECTIONAL, 3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：Current Sense
- Number of Circuits：1
- Output Type：Single Ended, Rail-to-Rail
- Slew Rate：2V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：75 µA
- Voltage - Input Offset：100 µV
- Current - Supply：195µA
- Current - Output / Channel：8 mA
- Voltage - Supply Span (Min)：2.7 V
- Voltage - Supply Span (Max)：5.5 V
- Operating Temperature：-40°C ~ 125°C (TA)
- Grade：Automotive
- Qualification：AEC-Q100
- Mounting Type：Surface Mount
- Package / Case：6-TSSOP, SC-88, SOT-363
- Supplier Device Package：SC-70-6
- -3db Bandwidth：350 kHz
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Overview
The INA181A1QDCKRQ1 is a single-channel, automotive-grade bidirectional current-sense amplifier from Texas Instruments. It features a fixed gain of 20 V/V and supports common-mode voltages from -0.2 V to 26 V while operating on a 2.7 V to 5.5 V supply. The device offers a bandwidth of 350 kHz and a maximum quiescent current of 260 µA. It is qualified under AEC-Q100 standards for Grade 1 applications, functioning reliably within an extended temperature range of -40°C to +125°C.
Feature Summary
- Bidirectional current sensing capability allows detection of current flow in both directions by offsetting the output voltage via the reference pin.
- Integrated matched resistor gain network minimizes gain error and reduces temperature drift for improved measurement accuracy.
- Wide common-mode input range enables operation independent of the power-supply voltage, supporting both high-side and low-side configurations.
Applications
- Motor control systems
- Battery monitors and balancers
- Power management circuits
Procurement Notes
Verify that the specific part number suffix matches the required package type and quality grade. Confirm AEC-Q100 qualification status if automotive compliance is mandatory. Ensure the selected gain option aligns with system requirements before ordering. Check documentation for functional safety capabilities if applicable to the design.
Selection Notes
Select this component when a fixed gain of 20 V/V is required for bidirectional current monitoring. Consider the SC-70-6 package for space-constrained designs. Evaluate the 350 kHz bandwidth against signal frequency needs. Verify compatibility with the target supply voltage range and common-mode voltage levels.
Part Context
This device belongs to the INAx181-Q1 family of cost-optimized, automotive current-sense amplifiers. The family includes dual-channel (INA2181-Q1) and quad-channel (INA4181-Q1) variants. All members share similar electrical characteristics but differ in channel count and package options, providing flexibility for various multi-channel sensing applications.
Replacement Considerations
Other devices within the INA181-Q1 family offer different gain options or channel counts. Non-automotive versions lack AEC-Q100 qualification. Verify pinout compatibility and thermal performance when substituting with packages such as SOT-23-6.
