INA239AIDGST

Power Supply Controllers, Monitors Overview

The INA239AIDGST is an ultra-precise digital power monitor featuring a 16-bit delta-sigma ADC. It supports input voltages up to 85 V and operates on a single supply between 2.7 V and 5.5 V. The device provides high-resolution current, voltage, and power monitoring with a maximum offset voltage of ±5 µV. It utilizes an SPI interface for data communication and includes programmable alert functions. The component is housed in a 10-VSSOP package and is rated for operation from -40°C to +125°C.

Power Supply Controllers, Monitors Feature Summary

• Integrates a 16-bit delta-sigma analog-to-digital converter for high-resolution measurements
• Supports bidirectional current sensing with wide common-mode voltage range up to 85 V
• Provides simultaneous measurement of bus voltage, shunt voltage, and calculated power
• Features programmable alert thresholds and flags for system protection

Power Supply Controllers, Monitors Applications

• High-voltage battery management systems
• Industrial process control current monitoring
• Power distribution unit (PDU) oversight
• Telecommunications power infrastructure monitoring

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'AIDGST' against the manufacturer's latest datasheet to confirm pinout and electrical specifications. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for any recent product discontinuance notifications or lifecycle changes directly from Texas Instruments documentation before finalizing procurement plans.

Power Supply Controllers, Monitors Selection Notes

Select this component when applications require high precision in high-voltage environments exceeding standard monitor capabilities. The 16-bit resolution suits scenarios demanding detailed power analysis. Ensure the system interface supports SPI communication. Consider the 85 V common-mode limit as a primary selection criterion over lower-voltage alternatives like the INA220 series.

Power Supply Controllers, Monitors Part Context

The INA239 belongs to Texas Instruments' family of digital power monitors. Unlike the INA220 which uses I2C/PMBus, the INA239 utilizes an SPI interface. It shares the MSOP/VSSOP form factor with other devices in the portfolio but distinguishes itself through its higher voltage tolerance and specialized high-precision ADC architecture designed for demanding industrial and energy applications.

Power Supply Controllers, Monitors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineers should consult official Texas Instruments cross-reference tools or application notes for validated replacements.