AZ809ANLTR-E1

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The AZ809ANLTR-E1 from Diodes Incorporated is a simple, low operating power Microprocessor Supervisor and Reset IC which is optimized for highly cost-sensitive applications, as it requires no external component to monitor power supply and no special programming. It requires minimal external components to operate and provides an optimal solution for monitoring and resetting microcontrollers in a wide range of applications. It is designed to monitor two independent power supplies (VCC and AVCC/VREF), and allows reset output to be triggered multiple times, which helps in ensuring system reliability during power up and power down.

The AZ809ANLTR-E1 belongs to the family of PMIC - Supervisors, which basically refer to devices that monitor the power supply and system reset states, and will initiate a reset in the event of certain faults. This helps to ensure that the circuitry cannot enter an undesired state and provides a robust system reset signal.

The AZ809ANLTR-E1 supports very low operating power, and is suitable for both single or dual power supply applications. It includes an internal voltage regulator, which allows it to monitor the supply voltage and an auxiliary comparator, which is used to monitor a separate reference voltage. This allows the AZ809ANLTR-E1 to monitor and reset two independent power supplies with minimal external components.

The AZ809ANLTR-E1 is designed to support two reset functions, external reset, which is triggered by an external reset signal and internal reset, which is triggered by a fault in the power supply. The reset signal will remain active until either the external reset signal is removed or the power supply is stable. The device also features an internal delay, which delays the reset signal until the power supply have stabilized and any potential noise have dissipated.

The AZ809ANLTR-E1 is suitable for a wide range of applications, including instrumentation, automotive, microcontroller-based systems, industrial, building and home automation, consumer, medical and alternative energy applications. It is suitable for use as a reset supervisor for MCUs, DSPs, µPs and other digital systems, providing reliable system reset function independent of the processor status.

The AZ809ANLTR-E1 operates in a very simple manner. It monitors the device supply voltage (VCC) and the reference voltage (AVCC/VREF) and when the supply voltage falls below the reset threshold (3.2V or 3.6V), the device will generate a reset signal and keep the reset active until the power supply is stable. Similarly, when the reference voltage falls below the reset threshold (1.8V), the device will also generate a reset signal.

The AZ809ANLTR-E1 provides high performance and reliability as it can be used in applications that operate in a wide range of temperatures (-40 to +110°C) and, at the same time, it is protected from overvoltage and electrostatic discharge. Its low operating power ensures that the device doesn’t draw power from the application’s system power supply, and minimizes the risk of any undesired standby current.

The AZ809ANLTR-E1 is an extremely cost-effective way of providing a reliable reset solution for a variety of microcontroller-based applications. With its low operating power and wide temperature range, it is well suited for many applications in instrumentation, automotive, industrial and consumer applications.

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