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Product Detailed Parameters
- Description：IC CURR SENSE 1 CIRCUIT 8VSSOP
- 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：900 kHz
- Current - Input Bias：20 µA
- Voltage - Input Offset：3 µV
- Current - Supply：680µA
- 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：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-VSSOP
- -3db Bandwidth：-
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Overview
The INA2290A3IDGKT is a dual-channel, ultra-precise current-sense amplifier from Texas Instruments. It operates with a supply voltage range of 2.7 V to 20 V and supports common-mode voltages from 2.7 V to 120 V. The device features a fixed gain of 100 V/V, a bandwidth of 900 kHz, and a slew rate of 2 V/µs. Key electrical characteristics include a maximum offset voltage of ±15 µV, a DC CMRR of 160 dB, and a quiescent current of 680 µA per channel. It is housed in an 8-pin VSSOP package.
Feature Summary
- Dual-channel architecture for simultaneous high-side current sensing
- Ultra-precise zero-drift topology ensuring low offset voltage and drift
- Wide common-mode voltage range up to 120 V with high CMRR
- High-speed performance suitable for fast overcurrent protection
Applications
- Active antenna system mMIMO (AAS)
- Macro remote radio unit (RRU)
- 48-V rack server power supplies
- Test and measurement equipment
Procurement Notes
Verify the specific suffix IDGKT corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the A3 designation aligns with the necessary 100 V/V gain setting for your circuit design. Ensure compatibility with the 8-VSSOP footprint dimensions during PCB layout verification.
Selection Notes
Select this component when dual-channel precision is required alongside high common-mode voltage tolerance. The 100 V/V gain option optimizes dynamic range for moderate sense voltages. Consider the 900 kHz bandwidth and 2 V/µs slew rate for applications demanding rapid transient response and accurate high-frequency signal processing.
Part Context
This part belongs to the INAx290 family of ultra-precise current-sense amplifiers. While the single-channel INA290 uses an SC-70 package, the INA2290 variant provides two channels in a compact 8-pin VSSOP form factor. This family utilizes a transconductance architecture with current-feedback to achieve low bias currents and wide common-mode ranges.
Replacement Considerations
INA2290A3IDGKR
FAQ
What is the maximum common-mode voltage supported by the INA2290A3IDGKT?
The device supports a common-mode voltage range from 2.7 V to 120 V.
How does the gain affect the bandwidth of the INA2290A3IDGKT?
The -3-dB bandwidth is gain-dependent; for the A3 devices with a 100 V/V gain, the bandwidth is typically 900 kHz.
Is the INA2290A3IDGKT bidirectional?
No, the INAx290 family is designed for high-side only current-sensing applications.
