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Product Detailed Parameters
- Description：IC CURR SENSE 1 CIRCUIT SOT23-5
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：Current Sense
- Number of Circuits：1
- Output Type：-
- Slew Rate：2.5V/µs
- Gain Bandwidth Product：900 kHz
- Current - Input Bias：20 µA
- Voltage - Input Offset：15 µV
- Current - Supply：1.5mA
- 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：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- -3db Bandwidth：-
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Overview
The INA281A5IDBVR is a high-precision current sense amplifier from Texas Instruments, designed for applications requiring accurate measurement in high common-mode voltage environments. It operates with a supply voltage range of 2.7 V to 20 V and supports common-mode voltages from -4 V to 110 V. The device features a fixed gain of 50 V/V, a bandwidth of 900 kHz, and a slew rate of 2.5 V/µs. Key electrical specifications include an input offset voltage of 30 µV, a CMRR of 120 dB, and an input bias current of 20 µA. It is housed in a compact SOT-23-5 package and functions reliably across an operating temperature range of -40°C to +125°C.
Feature Summary
- Supports high common-mode voltage operation up to 110 V
- Provides high precision with low input offset voltage and high CMRR
- Features wide bandwidth for fast transient response
Applications
- Industrial motor control systems
- Power supply current monitoring
- Battery management systems
Procurement Notes
Verify the specific suffix IDBVR corresponds to the SOT-23-5 surface-mount package and reel/cut-tape availability. Confirm the A5 variant indicates the 50 V/V gain setting as per official datasheets. Ensure compatibility with your system's common-mode voltage limits and thermal requirements before finalizing procurement.
Selection Notes
Select this component when high-side current sensing is required in systems with large common-mode voltage swings. The fixed 50 V/V gain simplifies design by eliminating external resistor networks. Consider the SOT-23-5 package size constraints and the need for precise gain accuracy in low-voltage drop measurements across shunt resistors.
Part Context
This part belongs to the INA281 family of current sense amplifiers, which are engineered for robust performance in demanding industrial and automotive environments. The family offers various gain options and packages to suit different board space and accuracy requirements while maintaining consistent high common-mode voltage tolerance.
Replacement Considerations
Check for direct pin-compatible alternatives within the INA281 series or other TI current sense amplifiers with similar gain and voltage ratings. Verify that any substitute matches the 50 V/V gain and SOT-23-5 footprint without requiring schematic changes.
