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Product Detailed Parameters
- Description：-5-V TO 110-V, BIDIRECTIONAL, 1.
- 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：3 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 INA296A3IDDFR is a bidirectional, ultra-precise current sense amplifier from Texas Instruments. It measures voltage drops across shunt resistors over a wide common-mode range of -5V to 110V, independent of the supply voltage. The device features a fixed gain of 50V/V and operates on a single supply from 2.7V to 20V with a typical quiescent current of 2.5mA. Key electrical specifications include a maximum offset voltage of ±10µV, a maximum gain error of ±0.01%, and a typical CMRR of 166dB. It offers a small-signal bandwidth of 1.1MHz and a slew rate of 8V/µs.
Feature Summary
- Ultra-precise zero-drift architecture ensures low offset voltage and minimal drift across temperature ranges.
- Wide common-mode input range supports high-side, low-side, and inline sensing applications up to 110V.
- High-speed response with 1.1MHz bandwidth enables rapid detection of transient events and overcurrent conditions.
Applications
- 48V DC/DC converters
- 48V battery management systems (BMS)
- Test and measurement equipment
- Macro remote radio units (RRU)
- 48V rack server power supplies
Procurement Notes
Verify the specific suffix IDDFR corresponds to the SOT-23-8 package and tape-and-reel shipping configuration. Confirm that the A3 designation matches the required 50V/V gain for your circuit design. Ensure compatibility with the -40°C to +125°C operating temperature range specified for industrial applications.
Selection Notes
Select this component when high accuracy is required in high-voltage environments. The 50V/V gain is suitable for applications requiring moderate signal amplification without excessive output swing. Consider the 1.1MHz bandwidth for fast transient protection circuits. Verify that the 35µA input bias current meets leakage requirements for sensitive shunt measurements.
Part Context
This part belongs to the INA296x family of ultra-precise current sense amplifiers. The 'A' indicates the highest precision grade with ±0.01% max gain error. The '3' denotes the 50V/V gain option. The 'IDDFR' suffix specifies the SOIC/SOT-23 thin package and reel packaging. It complements other gains like 10V/V or 200V/V within the same series.
Replacement Considerations
INA296A2IDDFR (20V/V gain), INA296A4IDDFR (100V/V gain). Verify gain requirements before substitution as functional performance differs significantly with gain changes.
