company blog about TI REF5050IDR Low-Noise Very Low-Drift Wide-VIN Precision Voltage Reference

TI REF5050IDR Low-Noise Very Low-Drift Wide-VIN Precision Voltage Reference

Shenzhen Mingjiada Electronics Co., Ltd., as a globally renowned distributor of electronic components, now supplies TI's REF5050IDR—a low-noise, ultra-low-drift precision voltage reference chip with a wide input voltage range, providing a stable and reliable voltage reference for high-precision data acquisition systems.

This REF5050IDR chip supports both sink and source current operation, featuring outstanding linear regulation and load regulation to maintain exceptional performance across demanding application environments.

REF5050IDR: A Voltage Reference Chip of Exceptional Performance

The REF5050IDR is a 5V output precision voltage reference chip within TI's REF50xx series, renowned for its low noise, ultra-low drift, and wide input voltage range.

Housed in an SOIC-8 package suitable for surface mount technology (SMT), its core performance parameters include:

High-Precision Output: Delivers a fixed 5V output voltage with initial accuracy of 0.05%, ensuring measurement accuracy in systems.

Ultra-Low Temperature Drift: Features a low temperature coefficient of 3ppm/°C, maintaining stable output across the wide temperature range of -40°C to 125°C.

Low noise performance: Noise level as low as 3µVp-p (0.1Hz to 10Hz), delivering a clean reference voltage for high-precision data acquisition systems.

Wide input voltage range: Operates from 5.2V to 18V input voltage, adapting to diverse power supply environments.

Strong drive capability: Delivers ±10mA output current with excellent linear regulation and load regulation.

The REF5050IDR employs TI's proprietary design technology to achieve outstanding levels of accuracy, stability, and noise performance. Supporting both sink and source current operation, it exhibits exceptional long-term stability—22 ppm after the first 1000 hours (in SOIC-8 package).

REF5050IDR Technical and Design Advantages:

The REF5050IDR employs an advanced design architecture and technology that distinguishes it within its class. Its outstanding long-term stability is demonstrated by a drift of just 22ppm after the first 1000 hours (in SOIC-8 package), a stability critical for applications requiring long-term reliability.

The REF5050IDR possesses a high output current capability (±10mA), enabling direct driving of multiple loads and reducing the need for external buffers. Its typical linear regulation is 1ppm/V, with a load regulation of 30ppm/mA, further ensuring voltage stability under diverse operating conditions.

The REF50xx series offers three performance grades: Enhanced Grade (EI), High Grade (I), and Standard Grade (AI). As a High-Grade product, the REF5050IDR achieves an optimal balance of accuracy, temperature drift, and noise, making it suitable for most high-precision applications.

The REF5050IDR's optimised internal architecture incorporates a bandgap reference core, a high-performance output amplifier, and precision trimming circuitry. The integration of these elements delivers its exceptional performance metrics.

Key Application Areas for the REF5050IDR:

The REF5050IDR is suitable for diverse high-precision applications, particularly in domains demanding stringent measurement accuracy and system stability.

Within precision data acquisition systems, the REF5050IDR supplies reference voltages to ADCs (analogue-to-digital converters) and DACs (digital-to-analogue converters), ensuring conversion accuracy. Its low noise and low drift characteristics directly influence system resolution and accuracy.

Industrial process control systems likewise benefit from the REF5050IDR's high precision and stability. In these applications, where significant temperature variations and complex environments prevail, the chip's wide temperature range and low temperature coefficient guarantee long-term measurement reliability.

Medical instruments demand exceptionally high precision and reliability from components, and the REF5050IDR's characteristics fully meet the requirements of such applications. It plays a vital role in patient monitoring equipment, diagnostic devices, and laboratory instruments.

Furthermore, the REF5050IDR is suitable for pressure and temperature transmitters, laboratory and field instrumentation, and semiconductor test equipment. Its wide input voltage range permits direct connection to batteries or field power sources, enhancing application flexibility.