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Product Detailed Parameters
- Description：-5-V TO 110-V BIDIRECTIONAL ULTR
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Amplifier Type：Current Sense
- Number of Circuits：1
- Output Type：-
- Slew Rate：8V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：35 µA
- Voltage - Input Offset：2 µV
- Current - Supply：2.5mA
- 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：SOT-23-8 Thin, TSOT-23-8
- Supplier Device Package：TSOT-23-8
- -3db Bandwidth：1.1 MHz
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Overview
The INA241A5IDDFR is a bidirectional ultra-precise current sense amplifier from Texas Instruments. It features a fixed gain of 200 V/V and operates with a common-mode voltage range of -5V to 110V. The device supports a supply voltage between 2.7V and 20V, drawing 2.5mA quiescent current. Key electrical specifications include a maximum offset voltage of ±8µV, a typical DC CMRR of 166dB, and a small-signal bandwidth of 1.1MHz. It is housed in an SOT-23-8 package.
Feature Summary
- Enhanced PWM rejection circuitry minimizes output signal disturbances caused by large common-mode voltage transients at the inputs.
- Ultra-precise measurement capability achieved through low input offset voltage and minimal gain error across the operating temperature range.
- High-speed response with a 1.1MHz bandwidth and fast settling time suitable for rapid over-current event detection.
Applications
- Motor drives
- Solenoids and actuators
- Injection molding machines
- Cordless power tools
Procurement Notes
Verify the specific ordering suffix IDDFR corresponds to the SOT-23-8 package and tape-and-reel shipping configuration. Confirm that the A5 variant matches the required 200 V/V gain for your system design. Ensure compatibility with the specified -40°C to +125°C operating temperature range before finalizing procurement.
Selection Notes
Select this component when high-side or low-side sensing requires a wide common-mode range independent of the supply voltage. The 200 V/V gain is optimal for detecting small voltage drops across low-value shunt resistors. Consider the SOT-23-8 package constraints if board space is limited compared to larger SOIC options.
Part Context
This part belongs to the INA241x family of ultra-precise current sense amplifiers. The 'A' designation indicates the ultra-precision grade with lower offset and drift compared to the B grade. The '5' suffix specifies the 200 V/V fixed gain option within the series.
Replacement Considerations
INA241B5IDDFR offers similar functionality but with higher offset voltage and gain error specifications. Other gain variants such as INA241A4IDDFR (100 V/V) are available if different amplification is required.
