Texas Instruments

REF1004I-2.5

REF1004I-2.5 Description

The REF1004I-2.5 from Texas Instruments is a high-precision shunt voltage reference designed for applications requiring stable and accurate voltage regulation. This 2.5V fixed-output reference offers a tight tolerance of ±0.4%, ensuring reliable performance in precision analog circuits. With a 20 mA output current capability and a low temperature coefficient of 20ppm/°C (typical), the REF1004I-2.5 excels in environments with fluctuating temperatures. Packaged in an 8-pin SOIC and delivered in a tube, this device is optimized for surface-mount assembly, making it suitable for compact PCB designs.

REF1004I-2.5 Features

• Output Type: Fixed 2.5V with ±0.4% tolerance for high accuracy.
• Low Noise: 120µVrms (10Hz to 10kHz) ensures minimal interference in sensitive circuits.
• Stable Performance: 20ppm/°C typical temperature coefficient enhances reliability across operating conditions.
• Low Cathode Current: 20 µA minimizes power consumption in battery-operated systems.
• Robust Packaging: MSL 3 (168 hours) moisture sensitivity and ROHS3 compliance meet environmental and handling standards.
• Shunt Reference Architecture: Simplifies circuit design by operating in parallel with the load.

REF1004I-2.5 Applications

The REF1004I-2.5 is ideal for:

• Precision Analog Systems: Such as data converters (ADCs/DACs), where stable reference voltages are critical.
• Portable Electronics: Low cathode current (20 µA) suits battery-powered devices like medical sensors.
• Industrial Controls: 20mA output current supports robust signal conditioning in harsh environments.
• Test & Measurement Equipment: Low noise and high accuracy ensure reliable calibration and sensing.
• Automotive Electronics: REACH unaffected status makes it suitable for compliant automotive designs.

Conclusion of REF1004I-2.5

The REF1004I-2.5 stands out as a high-performance shunt voltage reference, combining low noise, precision, and thermal stability in a compact SOIC-8 package. Its ±0.4% tolerance and 20ppm/°C drift make it superior to generic references, while its low power consumption extends its utility to portable and industrial applications. Although classified as Last Time Buy, its ROHS3 compliance and surface-mount design ensure seamless integration into modern electronics. Engineers seeking a reliable 2.5V reference for precision circuits will find the REF1004I-2.5 an excellent choice.