AD587JNZ

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PMIC – Voltage Reference applications have been a popular choice among engineers since they were first introduced in the 1970s. The AD587JNZ is a family of precision-grade voltage reference devices released by Analog Devices. This device provides excellent temperature and long-term stability under challenging environmental conditions with minimal power dissipation. This article covers the application fields and working principle of the AD587JNZ.

Application Field
The AD587JNZ is designed for use in systems that require precise voltage references, often as part of an ASIC or integrated circuit. Its range of performance is suitable for instrumentation and controlling applications, making it suitable for both industrial and research purposes. Its high-speed response time ensures that the voltage reference is suitable for use in high-frequency applications. Its low noise characteristics make it ideal for critical signal referencing applications.

In addition, the versatility of the AD587JNZ makes it suitable for use in both general purpose and automotive products. The device’s low power operation allows it to be used for battery powered designs. Its wide temperature range make it suitable for use in extreme conditions. The reliable and accurate voltage references provided by the AD587JNZ make it suitable for temperature sensors, thermocouples, data converters, and other similar systems.

Working Principle
The AD587JNZ is a band-gap voltage reference containing a built-in transistor switch. This switch is stabilized with a transistor-controlled feedback loop. The reference voltage of the device is set by an external resistor-divider network, and the current output is regulated by an emitter-degeneration transistor circuit. The feedback loop improves temperature stability and the low-noise characteristics of the reference voltage.

The AD587JNZ uses a proprietary protection method known as “soft shutdown” in order to limit current increases under abnormal conditions. This helps to protect other components in the system from damage due to extreme current levels. When the device senses an overvoltage condition, it shuts down the output stage and switches the current output to ground. This helps to ensure that there is no sudden or excessive increase in current.

The AD587JNZ is available in four different voltage range packages, allowing for custom voltage reference designs. The devices come in a range of 2.5V, 5.0V, 10V, and 15V. They provide an output current of 2mA, 4mA, 8mA, and 12mA, respectively. The devices are also available in an industrial and automotive temperature range, and are fully pin-to-pin compatible with the AD587MTZ.

The AD587JNZ has been designed with the latest technology to provide a reliable and accurate voltage reference. The device has a wide temperature range and excellent long-term stability. Its low power operation and protection features make it suitable for demanding applications and environments. For these reasons, the AD587JNZ is a popular choice among engineers looking for a reliable voltage reference solution.

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