**REF198GSZ: A Precision Voltage Reference for Demanding Industrial and Test Applications**

In the realm of high-precision electronics, system accuracy is fundamentally dictated by the stability and reliability of its voltage reference. The **REF198GSZ** stands out as a premier solution, engineered to meet the rigorous demands of industrial automation, advanced instrumentation, and precision test equipment where even minor voltage deviations can lead to significant measurement errors.

This integrated circuit delivers a **fixed, precision 4.5V output voltage** with exceptional initial accuracy of ±0.05%. Its true performance, however, is revealed under real-world operating conditions. The device exhibits an ultra-low **temperature drift of 5ppm/°C (max)**, ensuring minimal output variation across a wide temperature range from -40°C to +125°C. This thermal stability is critical for applications exposed to fluctuating ambient temperatures, such as on a factory floor or in an outdoor data acquisition system.

Furthermore, the REF198GSZ is designed for low noise operation and excellent long-term stability. Its robust design minimizes the impact of input voltage fluctuations, featuring a high **power supply rejection ratio (PSRR)**. This allows it to maintain a clean, stable output even when powered by noisy industrial supply rails. With a maximum current output of 30mA, it can power multiple analog-to-digital converters (ADCs) or digital-to-analog converters (DACs) directly, simplifying system design and reducing the need for additional buffer amplifiers.

The combination of high accuracy, thermal stability, and load-driving capability makes the REF198GSZ an indispensable component for **enhancing the performance and reliability of data acquisition systems**, precision calibrators, and medical instrumentation. It provides the foundational voltage upon which entire measurement systems are built, guaranteeing that all subsequent conversions and processing are based on a known, stable value.

**ICGOOODFIND:** The REF198GSZ is a high-performance, precision voltage reference IC that provides a stable 4.5V output, characterized by its ultra-low temperature drift, high initial accuracy, and strong output drive capability, making it an ideal cornerstone for mission-critical measurement systems.

**Keywords:** Precision Voltage Reference, Low Temperature Drift, High Initial Accuracy, Industrial Applications, Data Acquisition Systems.