ISO122JP

Overview

The ISO122JP is a precision isolation amplifier manufactured by Texas Instruments, designed for applications requiring high accuracy and galvanic isolation. It features a single channel with a 50 kHz bandwidth and a common-mode rejection ratio of 140 dB. The device operates on supply voltages ranging from 4.5 V to 18 V per side, consuming 5.5 mA of quiescent current. It provides an insulation voltage of 1500 Vrms and maintains a low input offset voltage of 20 mV. The component is housed in an 8-pin PDIP package and functions within a temperature range of -25°C to +85°C.

Feature Summary

• Provides galvanic isolation via capacitive coupling technology
• Delivers precision amplification with low gain error
• Supports wide common-mode voltage ranges

Applications

• Industrial process control signal conditioning
• Medical equipment isolation interfaces
• Data acquisition systems requiring ground loop elimination

Procurement Notes

Verify the specific suffix designation against official Texas Instruments documentation to confirm pinout compatibility and thermal characteristics. Ensure that the procurement source provides valid RoHS compliance certificates as required for regulated markets. Cross-reference the manufacturer part number with authorized distributor lists to avoid counterfeit components. Confirm that the packaging type matches the intended assembly method for the target production line.

Selection Notes

Select this component when a cost-effective solution for isolated analog signal transmission is required. It is suitable for designs needing moderate bandwidth and high common-mode rejection. Consider the PDIP package constraints for PCB layout if through-hole mounting is mandatory. Evaluate power consumption requirements against the 5.5 mA operating current specification.

Part Context

This device belongs to the ISO122 family of precision isolation amplifiers from Texas Instruments. The series is engineered to replace traditional transformer-based isolators in many industrial applications. It integrates both the isolation barrier and amplification circuitry into a single monolithic structure, simplifying system design and reducing component count compared to discrete solutions.

Replacement Considerations

ISO122JPE4