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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：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：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- -3db Bandwidth：1.1 MHz
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Overview
The INA296A4IDR is a bidirectional current sense amplifier from Texas Instruments featuring a fixed gain of 100 V/V. It operates with a common-mode voltage range of -5V to 110V and supports a supply voltage between 2.7V and 20V. The device provides a small signal bandwidth of 1.1MHz, a slew rate of 8V/µs, and a settling time of 1µs to 1%. Key electrical characteristics include a maximum offset voltage of ±3µV, a typical CMRR of 166dB, and a maximum gain error of ±0.01%.
Feature Summary
- Ultra-precise architecture delivering high accuracy with minimal offset voltage and drift across the operating temperature range.
- Wide common-mode input range independent of the power supply voltage, supporting both high-side and low-side sensing configurations.
- High-speed response capabilities with a 1.1MHz bandwidth and fast settling time suitable for transient detection and overcurrent protection.
Applications
- 48V DC/DC converter current monitoring
- 48V battery management systems (BMS)
- Test and measurement equipment
- Macro remote radio unit (RRU) power stages
- 48V rack server power supplies
Procurement Notes
Verify the specific package variant against the datasheet option addendum, as the ID suffix indicates an SOIC-8 package. Confirm that the 100V/V gain version aligns with system dynamic range requirements. Ensure the design accounts for the specified common-mode voltage limits and supply rail constraints during integration.
Selection Notes
Select this component when a fixed 100V/V gain is required for precise bidirectional current measurement in high-voltage environments. The ultra-precise A-version offers superior offset and gain error specifications compared to the B-version. Consider the 1.1MHz bandwidth for applications requiring rapid fault detection or high-frequency signal processing.
Part Context
This device belongs to the INA296x family of ultra-precise, bidirectional current sense amplifiers. The series includes multiple gain options ranging from 10V/V to 200V/V and is available in SOT-23, VSSOP, and SOIC packages. The INA296A4IDR specifically utilizes the SOIC-8 form factor within the standard commercial-grade INA296A lineup.
Replacement Considerations
INA296A2IDR: Offers 20V/V gain. INA296A3IDR: Offers 50V/V gain. INA296A5IDR: Offers 200V/V gain. INA296B4IDR: Same 100V/V gain but with lower precision specifications.
