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Product Detailed Parameters
- Description：IC CURR SENSE 1 CIRCUIT SC70-5
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：Current Sense
- Number of Circuits：1
- Output Type：-
- Slew Rate：2V/µs
- Gain Bandwidth Product：1.1 MHz
- Current - Input Bias：20 µA
- Voltage - Input Offset：5 µV
- Current - Supply：370µA
- Current - Output / Channel：-
- Voltage - Supply Span (Min)：2.7 V
- Voltage - Supply Span (Max)：20 V
- Operating Temperature：-40°C ~ 125°C (TA)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SC-70-5
- -3db Bandwidth：-
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Overview
The INA290A1QDCKRQ1 is an AEC-Q100 qualified, unidirectional high-side current sense amplifier with a gain of 20 V/V. It operates over a common-mode voltage range of 2.7 V to 120 V and a supply voltage of 2.7 V to 20 V. Key electrical characteristics include a maximum offset voltage of ±25 µV, a typical DC CMRR of 160 dB, and a bandwidth of 1.1 MHz at the specified gain. The device features a quiescent current of 370 µA and is housed in a space-efficient SC-70 (DCK) package.
Feature Summary
- Ultra-precise measurement capability enabled by zero-drift architecture and low input bias current
- High-speed response suitable for fast overcurrent protection applications
- Wide common-mode voltage range supporting operation up to 120 V
Applications
- Solid-state LiDAR systems
- Automotive HVAC compressor modules
- Automotive interior heater modules
- Automotive parking heater modules
- Automotive pumps
Procurement Notes
Verify that the specific suffix QDCKRQ1 matches the required automotive qualification, package type, and tape-and-reel quantity. Confirm the 'A1' designation corresponds to the necessary 20 V/V gain setting for your circuit design. Ensure compatibility with the target operating temperature range and supply voltage requirements before finalizing procurement.
Selection Notes
Select this component when a fixed gain of 20 V/V is required for high-bandwidth current sensing. It is appropriate for applications needing wide common-mode voltage coverage up to 120 V. Consider the trade-off between the larger sense resistor allowed by this lower gain versus the higher power dissipation compared to higher-gain variants.
Part Context
This part belongs to the INA290-Q1 family of ultra-precise current sense amplifiers designed for automotive environments. The family offers multiple gain options (A1 through A5) to optimize dynamic range and sense resistor selection. All variants share the same SC-70 footprint and high common-mode voltage capabilities while differing in internal gain settings.
Replacement Considerations
Other members of the INA290-Q1 family, such as INA290A2QDCKRQ1 or INA290A3QDCKRQ1, may serve as substitutes if the system can accommodate different gains of 50 V/V or 100 V/V respectively. Verify that the change in gain does not violate output swing limits or require adjustments to the shunt resistor value.
