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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：1.1 MHz
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Overview
The INA290A2IDCKR is a single-channel, ultra-precise current-sense amplifier from Texas Instruments. It operates with a supply voltage of 2.7 V to 20 V and supports a wide common-mode input range from 2.7 V to 120 V. The device features a fixed gain of 50 V/V, a bandwidth of 1.1 MHz, and a slew rate of 2 V/µs. Key electrical characteristics include a maximum offset voltage of ±20 µV, a typical DC CMRR of 160 dB, and a quiescent current of 370 µA per channel. It is housed in a space-efficient SC-70 (DCK) package.
Feature Summary
- Ultra-precise measurement capability enabled by zero-drift architecture for low offset voltage and drift
- High common-mode rejection ratio ensuring accurate sensing across wide voltage ranges
- Wide operational common-mode voltage range supporting high-side current sensing applications
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 ordering suffix IDCKR corresponds to the SC-70 package and tape-and-reel delivery format. Confirm that the A2 designation matches the required 50 V/V gain setting for your circuit design. Ensure compatibility with the specified operating temperature range and supply voltage requirements before finalizing procurement.
Selection Notes
Select this component when high accuracy is required for high-side current monitoring in systems with large common-mode voltages. The 50 V/V gain option provides an optimal balance between signal amplification and dynamic range for many industrial applications. Consider the small SC-70 footprint if board space is limited.
Part Context
This device belongs to the INAx290 family of ultra-precise current-sense amplifiers. The family includes single-channel (INA290), dual-channel (INA2290), and quad-channel (INA4290) variants. All share similar electrical specifications but differ in channel count and physical package dimensions to suit various integration needs.
Replacement Considerations
Direct replacements within the same family include INA290A3IDCKR (100 V/V gain) or INA290A1IDCKR (20 V/V gain). For automotive applications, consider the qualified INA290-Q1 series. Verify pinout and gain settings match when substituting.
