**ADM811TARTZ-REEL: A Comprehensive Guide to the 3V Microprocessor Supervisory Circuit**
In the world of electronic design, ensuring the stable and reliable operation of a microprocessor or microcontroller is paramount. This is where microprocessor supervisory circuits, also known as reset ICs, come into play. The **ADM811TARTZ-REEL** from Analog Devices is a quintessential component in this category, specifically designed for **3V system applications**. This integrated circuit provides a critical function: it monitors the power supply voltage and holds the microprocessor in a safe reset state during power-up, power-down, and brownout conditions.
The primary role of the ADM811T is to assert a reset signal whenever the VCC supply voltage falls below a predefined threshold. This **prevures the microprocessor from operating at unstable or out-of-spec voltage levels**, which can cause erratic code execution, data corruption, or even hardware damage. The device features a manual reset input, offering designers a way to initiate a system reset via an external switch, adding a layer of control for debugging or user interaction.
A key specification of the ADM811TARTZ-REEL is its **fixed reset threshold voltage of 2.93V**, which is ideally suited for 3.3V and 3V systems. When VCC drops below this 2.93V threshold, the reset output (RESET) is asserted. It remains asserted until VCC rises above the threshold and remains stable for a minimum period, known as the reset timeout period. The ADM811T offers a **140ms minimum reset timeout period**, ensuring the microprocessor remains in reset long enough for the power supply and system clock to stabilize completely after power-up.
The device operates over a wide VCC range of 1.0V to 5.5V, consuming very low supply current, typically **12µA**, making it an excellent choice for power-sensitive and battery-operated applications. The "T" in its part number denotes that the reset output is active-low (RESET), which is the most common logic level used to initialize microprocessors. The component is delivered in a small, surface-mount SOT-23 package, and the "-REEL" suffix indicates it is supplied on a tape-and-reel for high-volume, automated assembly.
**ICGOO**D**FIND**: The ADM811TARTZ-REEL is an industry-standard, highly reliable solution for 3V system monitoring. Its simplicity, low power consumption, and robust performance make it an **indispensable component for ensuring system integrity** in a vast array of applications, from embedded computing and telecommunications equipment to industrial controls and portable devices.
**Keywords**: Microprocessor Supervisory Circuit, Reset IC, Power Monitoring, Brownout Protection, 3V System.
