The ADR421BR is a high-performance, precision voltage reference from Analog Devices Inc., renowned for its stability and accuracy in critical applications. This robust component is part of the ADR42x series, which is known for providing a stable and precise reference voltage over a wide range of operating conditions.

With an output voltage of 2.5V, the ADR421BR offers an impressive temperature coefficient of only 3 ppm/°C across the full industrial temperature range (-40°C to +125°C). This ensures that the voltage reference remains highly consistent and reliable, even under varying environmental conditions. The ADR421BR is thus an ideal choice for precision data converters and analog circuits, where a stable reference voltage is crucial for maintaining accuracy.

The ADR421BR features a low dropout voltage, typically 300 mV, which allows it to maintain performance even with minimal headroom above the output voltage. Additionally, the device boasts a low output noise of 1.75 µVp-p/V, which makes it suitable for noise-sensitive applications such as medical instrumentation and high-end audio equipment.

One of the key advantages of the ADR421BR is its low long-term output voltage hysteresis of 60 ppm typical, which contributes to its reliability and long-term stability. The device also offers a high output current capability, with a sink and source current of ±10 mA, making it versatile for various load conditions.

For ease of use, the ADR421BR comes in an 8-lead SOIC package, which is widely accepted and easy to integrate into a multitude of circuit designs. The device is also fully specified for operation at 5V, which is compatible with many standard power supplies and systems.

In summary, the ADR421BR from Analog Devices Inc. is a high-quality, precision voltage reference that offers excellent temperature stability, low noise, and high current capability, making it an ideal choice for demanding applications where a stable reference voltage is critical.