REF70

The REF70 is a precision voltage reference IC manufactured by Texas Instruments, designed for applications requiring high accuracy and stability. It offers a fixed output voltage of 2.5 V with a typical initial accuracy of ±0.1%, making it ideal for systems where reliable reference voltages are critical. The device operates over a wide supply voltage range from 2.7 V to 5.5 V, enabling flexibility in power supply design across various platforms. This voltage reference features low temperature coefficient, typically 5 ppm/°C, ensuring minimal drift over a broad operating temperature range from –40°C to +125°C. Its low output noise, less than 10 µV RMS (0.1 Hz to 10 Hz), contributes to high signal integrity in sensitive analog circuits such as data converters and sensor interfaces. Additionally, the REF70 exhibits excellent load regulation—less than 0.01% per mA—which maintains stable output even under varying load conditions. The REF70 is available in a compact SOT-23-5 package, offering space-efficient integration into dense PCB designs. It consumes only 150 µA of quiescent current, making it suitable for low-power applications including portable electronics and battery-operated devices. The internal bandgap architecture provides inherent thermal stability and reduced sensitivity to supply variations, enhancing overall system performance. Common applications include industrial measurement systems, medical instrumentation, data acquisition modules, and precision analog front-ends in communication equipment. Its robust performance under harsh environmental conditions makes it particularly useful in automotive and aerospace environments where reliability and consistency are paramount. The device also supports use in both single-supply and dual-supply configurations, expanding its versatility in mixed-signal designs. Designed for ease of use, the REF70 requires no external components for basic operation, simplifying circuit design while minimizing board space and cost. It is fully specified across the extended temperature range, eliminating the need for additional calibration or trimming in most applications. This combination of precision, low power, and ruggedness positions the REF70 as a preferred choice for engineers seeking dependable voltage reference solutions in demanding environments.