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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：3 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 INA290A3QDCKRQ1 is an AEC-Q100 qualified, high-side current sense amplifier with a 100 V/V fixed gain. 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 ±15 µV, a typical DC CMRR of 160 dB, and a bandwidth of 900 kHz at the specified gain. The device features a quiescent current of 370 µA and is housed in a space-efficient SC-70 package.
Feature Summary
- Ultra-precise measurement capability enabled by low input offset voltage and minimal gain drift across temperature ranges.
- High-speed response suitable for rapid overcurrent detection and protection applications.
- Wide common-mode voltage range allowing operation across various automotive power rails.
Applications
- Solid-state LiDAR systems
- Automotive HVAC compressor modules
- Automotive interior heater modules
Procurement Notes
Verify the specific suffix 'A3' confirms the 100 V/V gain configuration required for the design. Ensure the 'Q1' designation matches automotive qualification standards. Confirm the 'DCKRQ1' suffix corresponds to the SC-70 package and reel packaging format. Cross-reference the manufacturer part number against official datasheets to validate all specifications before integration.
Selection Notes
Select this component when a fixed 100 V/V gain is optimal for the target shunt resistor value and expected current levels. Consider the 900 kHz bandwidth if fast transient response is necessary. Evaluate the 370 µA quiescent current against system power budgets. Ensure the 120 V common-mode range exceeds the maximum bus voltage in the application.
Part Context
This device belongs to the INA290-Q1 family of ultra-precise current sense amplifiers designed for automotive environments. It utilizes a zero-drift topology to maintain accuracy under varying thermal conditions. The family offers multiple gain options to accommodate different sensing requirements while sharing the same compact SC-70 footprint and wide common-mode voltage capabilities.
Replacement Considerations
Other members of the INA290-Q1 family (INA290A1, A2, A4, A5) share identical pinouts and packages but differ in fixed gain values. Verify that the alternative gain matches the system's signal conditioning needs without requiring external resistor adjustments.
