ISO124U/1K

Overview

The ISO124U/1K is a precision isolation amplifier manufactured by Texas Instruments, featuring a single-channel architecture housed in an 8-SOIC surface-mount package. It operates on dual power supplies ranging from 4.5 V to 18 V with a maximum span of 36 V. The device provides a 50 kHz bandwidth and achieves a common-mode rejection ratio of 140 dB. Key electrical specifications include a gain error of 0.01%, an input offset voltage of 50 mV, and a supply current of 5.5 mA. It supports output currents up to 15 mA per channel and functions within a temperature range of -25°C to +85°C.

Feature Summary

• Provides galvanic isolation using capacitive technology for signal integrity
• Delivers high-precision performance with minimal gain error
• Features robust common-mode noise rejection capabilities

Applications

• Industrial process control systems requiring isolated signal conditioning
• Medical equipment needing patient isolation safety
• Data acquisition systems with ground potential differences

Procurement Notes

Verify the specific suffix '1K' against the manufacturer's official documentation to confirm reel packaging quantities and moisture sensitivity levels. Ensure the ordering part number matches the exact SOIC-8 variant required for your PCB footprint. Cross-reference the datasheet revision date to validate all electrical parameters before finalizing procurement orders.

Selection Notes

Select this component when a single-channel isolation amplifier with low gain error is required. Compare the 50 kHz bandwidth against application signal frequencies. Evaluate the 140 dB CMRR for high-noise environments. Consider the 8-SOIC package dimensions for space-constrained designs requiring surface-mount assembly.

Part Context

This part belongs to the ISO124 series of precision isolation amplifiers. It shares architectural similarities with other members like the ISO122 but differs in specific offset and gain characteristics. The series utilizes capacitive isolation technology to provide reliable galvanic separation between input and output circuits.

FAQ

What type of isolation technology does the ISO124U/1K utilize?

It employs capacitive isolation technology to provide galvanic isolation.

What is the maximum common-mode rejection ratio specified?

The device specifies a common-mode rejection ratio of 140 dB.