The **ADM8710L2ARJZ-RL7** is a low-voltage, high-accuracy supervisory circuit manufactured by Analog Devices. It is primarily used to monitor power supply voltages in microprocessor-based systems. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Threshold Voltage ($V_{TH}$)** | 2.32V (L-grade) | | **Reset Timeout Period** | 140 ms to 280 ms (Standard) | | **Supply Current** | 3 $\mu$A (Ultra-low power) | | **Operating Temperature** | -40°C to +85°C | | **Package Type** | SOT-23-6 | | **Output Type** | Open-Drain / Push-Pull (Configuration dependent) | --- ### 2. Functional Description The device serves as a "watchdog" for your system's power. It performs three primary functions: 1. **Power-On Reset (POR):** It ensures the processor starts in a known state by holding the reset line active until the supply voltage exceeds the threshold and stabilizes. 2. **Brownout Protection:** If the supply voltage drops below the threshold, the device triggers a reset to prevent data corruption or erratic system behavior. 3. **Manual Reset (MR):** It includes an input for a physical button or external logic to trigger a hard reset manually. --- ### 3. Pin Configuration (SOT-23-6) | Pin No. | Name | Function | | :--- | :--- | :--- | | 1 | **RESET** | Active-low output signal. | | 2 | **GND** | Ground reference. | | 3 | **MR** | Manual Reset input (Active-low). | | 4 | **WDI** | Watchdog Input (Monitors processor activity). | | 5 | **Vcc** | Power supply input being monitored. | | 6 | **WDO** | Watchdog Output (Signals if the processor hangs). | --- ### 4. Application Circuit Example To use this part, you typically connect it between the power rail and the reset pin of a Microcontroller (MCU). ```c // Logic Flow: 1. Vcc rises above 2.32V 2. ADM8710 waits ~200ms (stabilization) 3. RESET pin goes HIGH 4. MCU begins execution 5. MCU must toggle WDI pin periodically to prevent Watchdog Reset ``` --- ### 5. Part Number Breakdown: `ADM8710L2ARJZ-RL7` * **ADM8710**: Model series. * **L**: Threshold voltage identifier (2.32V). * **2**: Reset timeout code. * **ARJZ**: Package code for SOT-23. * **RL7**: Tape and reel packaging (7-inch reel).