REF1004I-1.2G4

Overview

The REF1004I-1.2G4 is a micropower voltage reference from Texas Instruments, featuring a fixed shunt output of 1.235 V with an initial accuracy of ±0.3%. It operates within a temperature range of -40°C to +85°C and exhibits a temperature coefficient of 20 PPM/°C. The device supports a maximum shunt current of 20 mA and utilizes an 8-SOIC surface-mount package.

Feature Summary

• Provides high-accuracy micropower voltage referencing for precision applications
• Utilizes two-terminal bandgap reference diode architecture
• Ensures outstanding temperature characteristics across the operating range

Applications

• Precision analog-to-digital converter (ADC) references
• Digital-to-analog converter (DAC) voltage sources
• Battery-powered instrumentation systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for moisture sensitivity level requirements during storage and handling. Ensure the specific suffix matches design specifications as discontinued variants may have limited availability.

Selection Notes

Select this component when a stable 1.235 V reference with tight tolerance is required in a compact SOIC-8 footprint. Consider the 20 mA shunt current limit and low power consumption profile for battery-operated designs requiring minimal quiescent current draw.

Part Context

Part of the REF1004 family of micropower voltage references designed for high accuracy. The series includes variants such as REF1004I-2.5 offering different output voltages while maintaining similar performance characteristics and packaging options for flexible system integration.

Replacement Considerations

REF1004I-1.2 is listed as a manufacturer-recommended substitute. Verify pinout compatibility and electrical parameter alignment before implementation.