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Product Detailed Parameters
- Description：AEC-Q100, -5-V TO 110-V, BIDIREC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：Current Sense
- Number of Circuits：1
- Output Type：Single-Ended
- Slew Rate：8V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：35 µA
- Voltage - Input Offset：3 µV
- Current - Supply：2.5mA
- Current - Output / Channel：-
- Voltage - Supply Span (Min)：2.7 V
- Voltage - Supply Span (Max)：20 V
- Operating Temperature：-40°C ~ 125°C (TA)
- Grade：Automotive
- Qualification：AEC-Q100
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-VSSOP
- -3db Bandwidth：1.1 MHz
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Overview
The INA296A3QDGKRQ1 is an ultra-precise, bidirectional current-sense amplifier from Texas Instruments. It features a wide common-mode voltage range of -5V to 110V and operates on a single supply voltage between 2.7V and 20V. The device provides a fixed gain of 50V/V with a small signal bandwidth of 1.1MHz and a slew rate of 8V/µs. Key electrical specifications include a maximum input offset voltage of ±3µV, a typical CMRR of 166dB, and a maximum gain error of ±0.01%. It is qualified under AEC-Q100 Grade 1 for automotive applications.
Feature Summary
- Ultra-precise zero-drift architecture ensures low offset voltage and minimal drift across the operating temperature range.
- Wide common-mode voltage capability allows operation independent of the power supply voltage.
- High-speed response with 1.1MHz bandwidth supports fast transient detection and overcurrent protection.
- Bidirectional operation enables accurate measurement of both positive and negative current flows.
Applications
- DC/DC converter current monitoring
- Battery management systems (BMS)
- Fuel cell control units
- Smart junction boxes
Procurement Notes
Verify the specific suffix QDGKRQ1 corresponds to the VSSOP-8 package and tape-and-reel packaging configuration. Confirm that the AEC-Q100 Grade 1 qualification meets the thermal requirements of the target application environment. Ensure compatibility with the system's reference voltage inputs for proper output biasing.
Selection Notes
Select this component when high accuracy and wide common-mode voltage are required in automotive environments. The 50V/V gain is suitable for applications requiring moderate amplification of shunt resistor voltages. Consider the VSSOP-8 package constraints for PCB layout and thermal dissipation compared to other available package options.
Part Context
This part belongs to the INA296x-Q1 family of ultra-precise current sense amplifiers designed for automotive use. The 'A' designation indicates the highest precision grade with tighter offset and gain error specifications. The '3' suffix denotes the 50V/V gain variant within the series.
Replacement Considerations
INA296A3QDRQ1
FAQ
What is the maximum common-mode voltage supported by the INA296A3QDGKRQ1?
The device supports an operational common-mode voltage range from -5V to 110V.
Does the INA296A3QDGKRQ1 support bidirectional current sensing?
Yes, the amplifier is designed for bidirectional operation, allowing it to measure both positive and negative voltage drops across the sense resistor.
