ISO120G-BI

Overview

The ISO120G-BI is a precision low-cost isolation amplifier manufactured by Texas Instruments. It features galvanic isolation with an insulation voltage of 3500 Vrms and a 3dB bandwidth of 60 kHz. The device operates on a single supply voltage ranging from 4.5 V to 18 V, consuming a typical operating current of 5 mA. It provides a common-mode rejection ratio (CMRR) of 115 dB and has an input offset voltage (Vos) of 10 mV. The component is housed in a DIP-40 package and supports through-hole mounting.

Feature Summary

• Provides galvanic isolation for signal transmission between circuits with different ground potentials.
• Delivers precision performance with high common-mode rejection capabilities.
• Operates efficiently with low power consumption suitable for battery-powered or energy-constrained systems.

Applications

• Industrial process control signal conditioning
• Medical equipment isolation interfaces
• Data acquisition systems requiring high CMRR

Procurement Notes

Verify the specific suffix 'BI' against the official datasheet to confirm pinout and electrical specifications match your design requirements. Ensure the DIP-40 package dimensions align with your PCB layout constraints. Confirm RoHS compliance status as indicated in the manufacturer's documentation before finalizing procurement.

Selection Notes

Select this component when high-voltage isolation is required alongside precision analog signal integrity. The 60 kHz bandwidth suits applications involving low-frequency signals. Consider the DIP-40 form factor if through-hole assembly is preferred over surface mount alternatives within the same family.

Part Context

This part belongs to the ISO120 series of isolation amplifiers from Texas Instruments. It is designed to replace older Burr-Brown designs while maintaining compatibility. The series focuses on providing cost-effective solutions for isolating sensors and signals in noisy environments without sacrificing accuracy.

Replacement Considerations

The ISO120BG is a documented equivalent within the same product family. Verify that the BG suffix does not alter critical parameters such as pin configuration or thermal characteristics compared to the BI variant.