REF195ESZ-REEL

Overview

The REF195ESZ-REEL is a precision micropower low dropout voltage reference from the Analog Devices REF19x series, housed in an 8-lead SOIC package. It provides a fixed nominal output voltage of 5 V with an initial accuracy of ±0.04%. The device operates within a supply voltage range of 5.1 V to 15 V and delivers a maximum output current of 30 mA. Key electrical specifications include a maximum temperature coefficient of 5 ppm/°C, a maximum supply current of 45 μA, and a sleep mode current of 15 μA. Noise performance is specified at 50 μVp-p over the 0.1 Hz to 10 Hz frequency band.

Feature Summary

• Utilizes patented temperature drift curvature correction circuitry and laser trimming for high stability.
• Features a dedicated SLEEP pin that reduces supply current when activated by TTL or CMOS logic levels.
• Includes integrated short-circuit protection to safeguard the device under fault conditions.

Applications

• Portable instrumentation
• Analog-to-digital (ADC) and digital-to-analog (DAC) converters
• Smart sensors
• Solar powered applications

Procurement Notes

Verify the specific suffix 'ESZ' against official documentation to confirm the exact grade and packaging configuration. Confirm the component status as active or obsolete through manufacturer channels prior to procurement. Ensure compatibility with the required operating temperature range and verify RoHS compliance requirements for the target application environment.

Selection Notes

Select this component when a stable 5 V reference is required with tight initial accuracy and low power consumption. The E-grade designation indicates superior line and load regulation compared to F or G grades. Consider the low dropout characteristic for battery-operated systems where supply voltage may approach the output level. Verify thermal management needs based on the specific load current and ambient temperature conditions.

Part Context

This part belongs to the REF19x series of precision band gap voltage references. The series offers various fixed output voltages including 2.048 V, 2.5 V, 3.0 V, 3.3 V, 4.096 V, and 4.5 V. All variants share similar architectural features such as micropower operation and low dropout capabilities, differing primarily in output voltage and initial accuracy grades.

Replacement Considerations

REF195GSZ-REEL

FAQ

What is the function of Test Pins 1 and 5?

Test Pins 1 and 5 are factory test points reserved for in-package Zener zapping during manufacturing. They should remain unconnected by the user to ensure optimal output accuracy.

How does the device operate in Sleep Mode?

Sleep Mode is enabled by applying a low TTL or CMOS level to the SLEEP pin. This action turns off the output and reduces the supply current to less than 15 μA.