INA239AIDGSR

Power Supply Controllers, Monitors Overview

The Texas Instruments INA239AIDGSR is a high-precision digital power monitor featuring a 16-bit delta-sigma ADC. It measures current, bus voltage, and power with a common-mode voltage range of -0.3V to +85V. The device supports a full-scale differential input of ±163.84mV or ±40.96mV. Key electrical specifications include a maximum offset voltage of ±5µV, gain error of ±0.1%, and input bias current of 2.5nA. It operates on a 2.7V to 5.5V supply with typical operating current of 640µA.

Power Supply Controllers, Monitors Feature Summary

• Integrates a 16-bit delta-sigma analog-to-digital converter for high-resolution measurements.
• Provides simultaneous monitoring of current, bus voltage, and calculated power.
• Includes an integrated temperature sensor with specified accuracy for system monitoring.
• Supports programmable conversion times and averaging to optimize noise performance.

Power Supply Controllers, Monitors Applications

• DC-DC converters and power inverters
• Industrial battery packs
• Ethernet over Power (PoE) systems
• Telecommunications equipment
• Enterprise server power management

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'AIDGSR' matches the required package type and temperature grade. Confirm that the device meets the necessary I2C interface requirements for the target system design. Ensure that the thermal performance aligns with the application's operating environment constraints.

Power Supply Controllers, Monitors Selection Notes

Select this component when high precision is critical for power monitoring applications. The low offset voltage and drift characteristics make it suitable for systems requiring accurate measurements without extensive calibration. Consider the wide common-mode range for high-side or low-side sensing configurations in industrial environments.

Power Supply Controllers, Monitors Part Context

This part belongs to the INA239 series of ultra-precise digital power monitors from Texas Instruments. It is designed for applications demanding high accuracy in current, voltage, and power measurement. The device integrates advanced signal processing capabilities within a compact surface-mount package.

Power Supply Controllers, Monitors Replacement Considerations

No direct substitute part numbers are confirmed in the provided documentation.