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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 INA290A2QDCKRQ1 is an AEC-Q100 qualified, unidirectional current-sense amplifier with a fixed gain of 50 V/V. It operates over a common-mode voltage range of 2.7 V to 120 V and a supply voltage range of 2.7 V to 20 V. The device features a maximum offset voltage of ±20 µV, a typical DC CMRR of 160 dB, and a bandwidth of 1.1 MHz at the specified gain. It is housed in a space-efficient SC-70 (DCK) package.
Feature Summary
- Ultra-precise measurement capability achieved through low input offset voltage and high DC common-mode rejection ratio.
- High-speed response suitable for fast overcurrent protection applications due to wide bandwidth and fast slew rate.
- Wide operational common-mode voltage range enables sensing across various automotive power rails.
Applications
- Solid-state LiDAR systems
- Automotive HVAC compressor modules
- Automotive interior heater modules
Procurement Notes
Verify the specific suffix 'A2' confirms the 50 V/V gain configuration required for the design. Ensure the 'Q1' designation aligns with automotive qualification standards. Confirm the 'DCKRQ1' suffix matches the SC-70 tape-and-reel packaging format needed for automated assembly processes.
Selection Notes
Select this variant when a fixed gain of 50 V/V is optimal for the system's dynamic range. Consider the 1.1 MHz bandwidth for high-frequency transient detection needs. Evaluate the 370 µA quiescent current against power budget constraints. Verify that the SC-70 footprint meets the PCB area limitations of the target application.
Part Context
This component belongs to the INA290-Q1 family of ultra-precise current-sense amplifiers designed for automotive environments. The family offers multiple gain options (20, 50, 100, 200, and 500 V/V) to suit different shunt resistor values and signal levels while maintaining consistent precision and bandwidth characteristics across the series.
Replacement Considerations
Other gains within the INA290-Q1 family (INA290A1, A3, A4, A5) share identical pinouts and specifications except for gain. Non-Q1 versions lack automotive qualification. Verify functional safety documentation requirements if replacing in safety-critical designs.
