ADR421AR - Analog Devices Inc.

Manufacturer Part Number

ADR421AR

Manufacturer

Analog Devices

Introduction

The ADR421AR is a precision voltage reference device in the XFET series used in power management systems.

Product Features and Performance

Precision XFET voltage reference technology

Stable fixed 2.5V output voltage

Output current capability is 10 mA

Low tolerance of ±0.12%

Excellent temperature coefficient at 10ppm/°C

Low noise performance with 1.75µVp-p from 0.1Hz to 10Hz

Product Advantages

Stable and reliable performance over a wide temperature range

Low power consumption with 600µA supply current

Good noise characteristics for sensitive applications

Versatile 4.5V to 18V input voltage range

Key Technical Parameters

Reference Type: Series

Output Type: Fixed

Voltage - Output: 2.5V

Current - Output: 10 mA

Tolerance: ±0.12%

Temperature Coefficient: 10ppm/°C

Noise - 0.1Hz to 10Hz: 1.75µVp-p

Voltage - Input: 4.5V ~ 18V

Current - Supply: 600µA

Operating Temperature: -40°C ~ 125°C

Quality and Safety Features

High accuracy and precision for dependable performance

Robust operation across extended temperature ranges

Compatibility

Suitable for surface mount technology (SMT) with SOIC-8 packaging

Application Areas

Power management in industrial systems

Precision data acquisition systems

Medical and healthcare electronics

Automotive control systems

Portable and battery-powered equipment

Product Lifecycle

Product Status: Obsolete

Note on immediate obsolescence and suggestions for replacing or upgrading models if available

Several Key Reasons to Choose This Product

Ideal for precision applications requiring high stability and low noise

Offers excellent temperature performance and long-term reliability

Suitable for a broad range of operating conditions

XFET technology provides superior performance compared to traditional bandgap references

Ease of use with a wide input voltage range and standard SOIC packaging for compatibility with various circuit designs