ISO124U

Overview

The ISO124U is a precision, low-cost isolation amplifier manufactured by Texas Instruments. It features a single channel with capacitive and galvanic isolation rated at 1500 Vrms. The device operates on a supply voltage ranging from 4.5 V to 18 V, consuming 5.5 mA of operating current. It provides a 3dB bandwidth of 50 kHz and a common-mode rejection ratio (CMRR) of 140 dB. The input offset voltage is specified at 50 mV. The component 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 isolation between input and output circuits using capacitive technology.
• Delivers precise signal amplification with low input offset voltage for accurate measurements.
• Offers high common-mode rejection capability to suppress noise in industrial environments.

Applications

• Industrial process control systems requiring isolated sensor interfaces
• Medical equipment needing patient isolation protection
• Power monitoring applications involving high-voltage differential measurements

Procurement Notes

Verify the specific suffix 'U' corresponds to the standard tape-and-reel or cut-tape packaging configuration intended for your assembly line. Confirm that the 8-SOIC footprint matches your PCB design guidelines. Ensure compliance with RoHS3 standards as indicated in the manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when a single-channel isolation amplifier with moderate bandwidth is required. The 50 kHz bandwidth suits most general-purpose industrial sensing tasks. Consider the 1500 Vrms isolation rating for safety-critical applications. Verify that the 4.5 V to 18 V supply range aligns with your system power architecture.

Part Context

The ISO124U belongs to the ISO124 family of precision isolation amplifiers from Texas Instruments. This series is designed to replace traditional transformer-based isolators in cost-sensitive applications. The U variant specifically denotes the SOIC-8 package option, distinguishing it from other package styles within the same functional family.

Replacement Considerations

ISO124UE4 is a verified equivalent part number within the same product family offering identical electrical characteristics and functionality.