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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：-
- 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
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：5-TSSOP, SC-70-5, SOT-353
- Supplier Device Package：SC-70-5
- -3db Bandwidth：900 kHz
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Overview
The INA290A3IDCKT is a single-channel, high-side current-sense amplifier from the INAx290 family. It features a wide common-mode voltage range of 2.7 V to 120 V and operates on a supply voltage between 2.7 V and 20 V. The device provides a fixed gain of 100 V/V with an ultra-precise zero-drift architecture. Key electrical specifications include a maximum input offset voltage of ±15 µV, a typical DC common-mode rejection ratio (CMRR) of 160 dB, and a bandwidth of 900 kHz at this gain setting. It draws a quiescent current of 370 µA per channel.
Feature Summary
- Ultra-precise zero-drift topology ensures low offset voltage and minimal drift across the operating temperature range.
- Wide common-mode voltage capability supports operation up to 120 V for high-side sensing applications.
- High bandwidth and fast slew rate enable rapid detection and processing of overcurrent events.
Applications
- Active antenna system mMIMO
- Macro remote radio unit power supplies
- 48-V rack server power distribution
- Test and measurement equipment
Procurement Notes
Verify the specific suffix IDCKT corresponds to the SC-70 package and tape-and-reel shipping configuration. Confirm that the A3 designation matches the required 100 V/V gain for your circuit design. Ensure compatibility with the 2.7 V to 20 V supply voltage requirements of your system.
Selection Notes
Select this component when high accuracy is required in high-voltage environments. The 100 V/V gain is suitable for moderate sense voltages. Consider the 900 kHz bandwidth if faster response times are needed compared to lower-gain variants. Verify that the SC-70 package dimensions fit your PCB layout constraints.
Part Context
This part belongs to the INAx290 series of ultra-precise current-sense amplifiers. The series includes dual-channel (INA2290) and quad-channel (INA4290) variants. The INAx290 family is designed for applications requiring wide common-mode ranges and high precision, utilizing a transconductance architecture with current-feedback amplifiers.
Replacement Considerations
Check for other INAx290 variants with different gains or channel counts. Verify pinout compatibility if substituting with other Texas Instruments current-sense amplifiers. Ensure thermal performance metrics align with your enclosure design.
