REF1004I-2.5

Overview

The REF1004I-2.5 is a two-terminal bandgap reference diode manufactured by Texas Instruments, designed for high accuracy and outstanding temperature characteristics at low operating currents. It provides a fixed output voltage of 2.5 V with an initial accuracy of ±20 mV. The device operates within a temperature range of –40 °C to +85 °C and features a minimum operating current of 20 μA. It supports operation up to 20 mA and exhibits excellent long-term temperature stability with a very low dynamic impedance.

Feature Summary

• Two-terminal bandgap reference design optimized for high accuracy
• Outstanding temperature characteristics maintained at low operating currents
• Excellent long-term temperature stability ensuring reliable performance
• Very low dynamic impedance for stable regulation

Applications

• Battery powered test equipment
• Portable medical instrumentation
• Portable communications devices
• A/D and D/A converters
• Notebook and palmtop computers

Procurement Notes

Verify the specific ordering suffix when purchasing. The standard tube package does not include a special suffix, while tape and reel options require adding '-TR' to the model number. Confirm that the component status is listed as Active Production on official documentation before finalizing procurement plans.

Selection Notes

Select this component when a cost-effective solution is required for applications demanding reference voltage accuracy, low power consumption, and long-term temperature stability. It serves as a drop-in replacement for LT1004 devices and an upgraded alternative to LM185/385 series references.

Part Context

This part belongs to the REF1004 Micropower Voltage Reference family from Texas Instruments. The 'I' suffix indicates characterization for industrial temperature ranges (-40 °C to +85 °C), distinguishing it from the 'C' variant which is rated for commercial temperatures (0 °C to +70 °C).

Replacement Considerations

The REF1004 is documented as a drop-in replacement for the LT1004. It also serves as an upgraded replacement for the LM185 and 385 series references.