ADR421ARZ-REEL7

The ADR421ARZ-REEL7 is an ultra-precise, second-generation eXtra implanted junction FET (XFET) voltage reference from Analog Devices. It offers low noise, high accuracy, and exceptional long-term stability, making it ideal for a wide range of precision applications.

Key Features:

• High Accuracy: The ADR421ARZ-REEL7 provides a fixed 2.5V output voltage with an initial accuracy of ±0.13% (0.04% typical), ensuring precise and stable voltage output.
• Low Noise: The device exhibits low noise performance, with a noise level of 1.75 μV peak-to-peak from 0.1 Hz to 10 Hz, making it suitable for noise-sensitive applications.
• Excellent Stability: With a temperature coefficient of 10 ppm/°C (3 ppm/°C typical), the ADR421ARZ-REEL7 maintains stable voltage output over a wide temperature range of -40°C to +125°C. Additionally, it offers long-term stability of 50 ppm/1000 hours.
• High Output Current: The voltage reference can source up to 10 mA of output current, providing flexibility in driving various loads.
• Compact Package: The ADR421ARZ-REEL7 is packaged in an 8-pin SOIC, which is compact and suitable for surface-mount assembly. It is also available on a reel, facilitating automated assembly in production processes.
• XFET Technology: The ADR421ARZ-REEL7 leverages ADI’s patented XFET technology to minimize voltage change vs. temperature nonlinearity. The XFET architecture provides better noise performance and operates off lower supply voltage headroom compared to traditional buried Zener references.

Applications:

• Precision data acquisition systems
• High-resolution converters
• Battery-powered instruments
• Portable medical instruments
• Industrial process control systems
• Precision instruments
• Optical network control circuits

Additional Benefits:

• Adjustable Output: The ADR421ARZ-REEL7 features an adjustment pin that allows the output voltage to be trimmed within a ±0.5% range without affecting other performance characteristics.
• Low Power Consumption: The device operates with low power consumption, making it suitable for battery-powered applications.

In summary, the ADR421ARZ-REEL7 is a high-performance voltage reference IC designed for precision applications requiring low noise, high accuracy, and stability over a wide temperature range. Its compact package, high output current capability, and adjustable output make it a versatile solution for various electronic systems.