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Product Detailed Parameters
- Description：AEC-Q100, -4-V TO 110-V BIDIRECT
- 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：25 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 INA241B2QDGKRQ1 is a bidirectional current sense amplifier from the Texas Instruments INA241x-Q1 family, designed for automotive applications. It features a gain of 20 V/V and operates with a common-mode voltage range of -5V to 110V. The device supports a supply voltage between 2.7V and 20V, drawing a quiescent current of 2.5mA. It offers a small signal bandwidth of 1.1MHz and an input offset voltage maximum of ±150µV. The component is housed in an 8-pin VSSOP package and meets AEC-Q100 Grade 1 standards.
Feature Summary
- Enhanced PWM rejection circuitry minimizes output disturbances caused by large common-mode transients associated with switching signals up to 125kHz.
- Bidirectional operation allows accurate measurement of voltage drops across shunt resistors over a wide common-mode range independent of supply voltage.
- High precision performance achieved through low offset voltage and high DC common-mode rejection ratio suitable for demanding sensing applications.
Applications
- Electric power steering (EPS)
- eTurbo/charger systems
- Starter/generator circuits
- Regenerative braking systems
Procurement Notes
Verify the specific suffix DGKR indicates the VSSOP-8 package variant when sourcing. Confirm AEC-Q100 Grade 1 qualification aligns with the required temperature range of -40°C to 125°C for the target automotive application. Ensure the 20 V/V gain matches the system design requirements for full-scale output optimization.
Selection Notes
Select this part for high-side, inline, or low-side current sensing where bidirectional flow must be monitored. The 20 V/V gain is optimal for balancing shunt resistor values against output dynamic range. Consider the enhanced PWM rejection if the environment contains significant switching noise or fast common-mode transitions.
Part Context
This component belongs to the INA241x-Q1 series of ultra-precise current sense amplifiers. The 'B' designation denotes a version with ±0.1% maximum gain error and ±150µV offset voltage, distinguishing it from the higher precision 'A' grade. The 'Q1' suffix confirms automotive qualification.
Replacement Considerations
INA241B2QDRQ1 (SOIC-8 package) and INA241B2QDGSRQ1 (VSSOP-10 package) are functionally equivalent within the same series offering identical electrical characteristics and gains.
