ADR421BRZ-REEL7

The ADR421BRZ-REEL7 is an ultraprecision, low-noise, 2.500V XFET® voltage reference from Analog Devices Inc. (ADI). It belongs to the second generation of eXtra implanted junction FET (XFET) voltage references, featuring high accuracy, excellent long-term stability, and low noise.

Key Features:

• Voltage Reference: Provides a stable 2.500V output voltage.
• Low Noise: Exhibits low noise performance with a peak-to-peak noise of 1.75 μV over the frequency range of 0.1 Hz to 10 Hz.
• High Accuracy: Offers an initial accuracy of 0.04%, ensuring precise voltage reference.
• Excellent Long-Term Stability: Maintains long-term stability of 50 ppm/1000 hours.
• Wide Operating Range: Operates over a wide temperature range of −40°C to +125°C and a wide input voltage range of 4.5V to 18V.
• High Output Current: Capable of sourcing up to 10 mA of output current.
• Package: Available in an 8-pin SOIC package, with the “REEL7” suffix indicating that it is supplied on a reel for automated assembly processes.

Applications:

• Suitable for precision data acquisition systems, high-resolution converters, battery-powered instrumentation, portable medical instruments, industrial process control systems, precision instruments, and optical network control circuits.

Technology Highlights:

• Utilizes temperature drift curvature correction patent technology and XFET technology to minimize the nonlinearity of voltage changes with temperature.
• The XFET architecture provides excellent accuracy and thermal hysteresis performance for bandgap voltage references.
• Compared to embedded Zener diode voltage references, it operates with lower power consumption and smaller power supply headroom.

In summary, the ADR421BRZ-REEL7 is a high-performance voltage reference designed for applications requiring ultraprecision, low noise, and high stability. Its compact package and automated assembly compatibility make it suitable for a wide range of electronic systems.