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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：2 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 INA290A4QDCKRQ1 is an AEC-Q100 qualified, ultra-precise current-sense amplifier designed for automotive applications. It operates with a supply voltage range of 2.7 V to 20 V and supports a wide common-mode input voltage from 2.7 V to 120 V. The device features a fixed gain of 200 V/V, a bandwidth of 850 kHz, and a slew rate of 2 V/µs. Key electrical characteristics include a maximum offset voltage of ±12 µV, a typical DC CMRR of 160 dB, and a quiescent current of 370 µA. It is housed in a space-efficient SC-70 (DCK) package.
Feature Summary
- Ultra-precise measurement capability achieved through zero-drift topology and low offset voltage
- High-speed response suitable for fast overcurrent protection and rapid detection
- Wide common-mode voltage range enabling high-side sensing across various voltage rails
- Automotive qualification compliant with AEC-Q100 standards
Applications
- Solid-state LiDAR systems
- Automotive HVAC compressor modules
- Automotive interior heater modules
- Automotive parking heater modules
- Automotive pumps
Procurement Notes
Verify the specific suffix 'A4' confirms the 200 V/V gain configuration required for the design. Ensure the 'Q1' designation aligns with automotive reliability standards. Confirm the 'DCK' package matches the PCB footprint constraints. Validate that the operating temperature range meets the system's environmental requirements.
Selection Notes
Select this component when a fixed gain of 200 V/V is optimal for the signal-to-noise ratio. Consider the 850 kHz bandwidth for applications requiring faster response than lower-gain variants. Evaluate the 370 µA quiescent current against power budget constraints. Ensure the 120 V common-mode range covers the maximum bus voltage.
Part Context
This part belongs to the INA290-Q1 family of ultra-precise current-sense amplifiers. The family offers multiple gain options (20, 50, 100, 200, and 500 V/V) to suit different dynamic range needs. All variants share the same SC-70 package and core architecture, differing primarily in internal resistor networks.
Replacement Considerations
Other gains within the INA290-Q1 family (INA290A1Q, INA290A2Q, INA290A3Q, INA290A5Q) are pin-compatible but have different fixed gains. Verify if the system can accommodate the gain change without modifying the shunt resistor value or ADC reference.
