REF02EZ Integrated Circuits (ICs)

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Voltage references, also known as precision voltage references (PVREFs), are an important type of electronic device designed to maintain a constant output voltage over a wide range of conditions. The voltage reference provides a stable and reliable voltage reference for system control and monitoring, as well as for precision analog signal conditioning and control. The REF02EZ is a low-power, low-dropout, unbounded voltage reference operated over the temperatures 2°C to +85°C. It is optimized for zero drift over time and temperature, and is qualified over the automotive temperature range.

Features and Advantages

The REF02EZ provides low drift over any temperature range, low power consumption, and fine-grain control of output voltage. It also offers:

• Excellent accuracy and temperature coefficient over operating temperature range.
• Wide power supply range.
• Wide temperature range.
• High speed of response to changes in load current.
• Wide bandwidth (up to 10kHz).
• Low noise.

Application Field

The REF02EZ voltage reference can be used in a wide range of applications, including precision temperature compensation, zero-drift current measurements, and analog circuit control. It can also be used in industrial control, medical equipment, and portable instrumentation. The REF02EZ is particularly suitable for applications that require a stable and reliable reference against which to measure or control an analog signal.

Working Principle

The REF02EZ voltage reference works by maintaining a constant output voltage even when faced with changing conditions. It contains an internal, temperature-compensated, low-noise reference circuitry with adjustable output voltage setting via an external resistor. The output of the device is accurately regulated over a wide range of conditions, and is less affected by noise than other reference circuits.

The REF02EZ maintains its output voltage by using a two-stage voltage regulator design. In the first stage, a low-noise voltage reference is used to provide a stable voltage reference. The second stage is a transimpedance amplifier that provides a high level of gain and a wide bandwidth to more accurately regulate the output of the device.

Conclusion

The REF02EZ is an excellent low-power, low-dropout voltage reference designed for a wide range of applications. Its low drift over temperature, low power consumption, and wide temperature range make it ideal for precision temperature compensation, analog signal conditioning, and industrial control.

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