ISO124U/1KG4

Overview

The ISO124U/1KG4 is a precision, lowest-cost isolation amplifier manufactured by Texas Instruments. It features a single channel with capacitive and galvanic isolation, providing an insulation voltage of 1500 Vrms. The device operates within a supply voltage range of 4.5 V to 18 V, consuming a typical operating supply current of 5.5 mA. Key electrical parameters include a 3dB bandwidth of 50 kHz, a common-mode rejection ratio (CMRR) of 140 dB, and an input offset voltage (Vos) of 50 mV. It is housed in an 8-SOIC surface-mount package and supports an operating temperature range from -25°C to +85°C.

Feature Summary

• Provides high-voltage galvanic isolation via capacitive technology for signal integrity across potential differences.
• Delivers precision performance with low input offset voltage and high common-mode rejection capabilities.
• Designed for cost-effective integration into isolated measurement systems requiring low power consumption.

Applications

• Industrial process control loop isolation
• Medical equipment signal conditioning
• Data acquisition system isolation

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's official documentation to confirm RoHS compliance status and exact pinout configuration. Ensure the ordering part number matches the required tape-and-reel quantity specifications for production integration. Cross-reference the datasheet revision date to validate all electrical characteristics prior to final design approval.

Selection Notes

Select this component when a single-channel isolation amplifier with a 50 kHz bandwidth and 1500 Vrms isolation rating is required. It is suitable for applications demanding low power operation under 18 V supplies. Consider the 8-SOIC package constraints and the specified -25°C to +85°C operating temperature range during thermal management planning.

Part Context

This device belongs to the ISO124 family of precision isolation amplifiers from Texas Instruments. It serves as a solution for isolating signals in noisy environments while maintaining accuracy. The U suffix indicates the SOIC surface-mount package variant, distinguishing it from through-hole or other package options within the same functional family.

Replacement Considerations

ISO124U

FAQ

What type of isolation does the ISO124U/1KG4 utilize?

It utilizes capacitive and galvanic isolation technology to provide a 1500 Vrms insulation voltage between input and output.

What is the maximum supply voltage for this amplifier?

The maximum supply voltage is 18 V, with a minimum operating voltage of 4.5 V.