ISO122JPE4

Overview

The ISO122JPE4 is a precision, low-cost isolation amplifier manufactured by Texas Instruments. It features a single channel with capacitive and galvanic isolation types. Key electrical parameters include an insulation voltage of 1500 Vrms, a 3dB bandwidth of 50 kHz, and a common-mode rejection ratio (CMRR) of 140 dB. The input offset voltage is specified at 20 mV, with a gain error of 0.02%. It operates on a power supply ranging from 4.5 V to 18 V, drawing a typical operating current of 5.5 mA. The device supports an operating temperature range from -25°C to +85°C and is housed in an 8-pin PDIP package.

Feature Summary

• Provides high-precision analog signal transmission across isolation barriers using capacitive coupling technology.
• Offers exceptional common-mode noise immunity with a CMRR of 140 dB for accurate measurements in noisy environments.
• Delivers low gain error and low input offset voltage to maintain signal integrity over the operating temperature range.

Applications

• Industrial process control systems requiring isolated sensor signal conditioning
• Medical equipment needing patient isolation and safety compliance
• Power electronics monitoring circuits for high-voltage side measurements

Procurement Notes

Verify the specific suffix JPE4 against the manufacturer's official datasheet to confirm the package type and temperature grade. Ensure compatibility with existing PCB footprints for the PDIP-8 configuration. Check for RoHS compliance status as indicated in the latest product documentation before finalizing procurement specifications.

Selection Notes

Select this component when a single-channel isolation amplifier with high CMRR and low cost is required. Compare performance metrics such as bandwidth and offset voltage against alternative models like the ISO121 series if higher precision or different packaging is needed. Consider the through-hole mounting requirement associated with the PDIP package during design phase.

Part Context

This part belongs to the ISO122 family of precision isolation amplifiers from Texas Instruments. It serves as a direct replacement for older discrete isolation solutions, offering integrated functionality in a compact form factor. The series is designed for applications demanding reliable galvanic isolation between high-voltage and low-voltage domains.

Replacement Considerations

The ISO122JP is listed as a related part number. Verify pinout and parameter equivalence before substitution. No other public substitute part numbers are confirmed for this specific model.