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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：Single-Ended
- Slew Rate：8V/µs
- Gain Bandwidth Product：-
- Current - Input Bias：35 µA
- Voltage - Input Offset：25 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：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- -3db Bandwidth：1.1 MHz
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Overview
The INA296B1IDR is a bidirectional current sense amplifier from Texas Instruments. It features a wide common-mode voltage range of -5V to 110V and operates on a single supply voltage between 2.7V and 20V. The device provides a fixed gain of 10V/V with a small signal bandwidth of 1.1MHz and a slew rate of 8V/µs. Key electrical characteristics include a maximum gain error of ±0.1% and an input offset voltage of ±150µV. It is housed in an SOIC-8 package.
Feature Summary
- Supports bidirectional operation for measuring positive and negative currents across shunt resistors.
- Enables high-side, low-side, or inline sensing with a common-mode range independent of the supply voltage.
- Provides ultra-precision measurement capabilities through low offset voltage and high common-mode rejection ratio.
Applications
- 48V DC/DC Converter
- 48V battery management systems (BMS)
- Test & Measurement
- Macro remote radio unit (RRU)
- 48V rack server
Procurement Notes
Verify the specific suffix ID indicates the SOIC-8 package variant. Confirm the B version designation aligns with the required accuracy specifications for the application. Ensure compatibility with the target operating temperature range of -40°C to +125°C. Cross-reference the ordering information against the manufacturer's latest datasheet to confirm availability and pinout consistency.
Selection Notes
Select this component when a fixed 10V/V gain is optimal for the system's dynamic range requirements. The B version offers higher gain error tolerance compared to the A version, which may suit cost-sensitive designs. Consider the SOIC-8 package for standard surface-mount assembly processes. Evaluate the 1.1MHz bandwidth against the transient detection speed needed for overcurrent protection circuits.
Part Context
This device belongs to the INA296x family of ultra-precise current sense amplifiers. The series includes multiple gain options ranging from 10V/V to 200V/V and different accuracy grades designated by letters A and B. The INA296B1IDR specifically utilizes the B-grade silicon with a 10V/V gain configuration.
Replacement Considerations
INA296A1IDR
FAQ
How does the output voltage relate to the reference pins?
The output voltage is set by the voltages applied to REF1 and REF2. For bidirectional operation, these are typically connected to the supply and ground to center the output at mid-supply.
What is the maximum common-mode voltage?
The operational common-mode voltage range extends from -5V to 110V, allowing use in high-voltage applications independent of the device supply voltage.
