The **ADM6348-36ARTZ-R7** is a low-power microprocessor supervisory circuit manufactured by **Analog Devices**. It is primarily used to monitor power supply levels and provide a reset signal to a system processor when the voltage falls below a specific threshold. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Threshold Voltage ($V_{TH}$)** | 3.6V (indicated by the "-36" in the part number) | | **Supply Current** | 1.0 $\mu$A (typical) | | **Reset Type** | Active-Low, Open-Drain | | **Minimum Reset Timeout** | 100 ms | | **Package Type** | SOT-23 (3-lead) | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Functional Description The device performs three critical functions to ensure system reliability: 1. **Power-On Reset (POR):** When the system is first powered up, the device keeps the processor in a reset state for at least 100ms to allow the power supply to stabilize. 2. **Brownout Detection:** If the supply voltage ($V_{CC}$) drops below the 3.6V threshold during operation, the `RESET` pin triggers immediately to prevent the processor from executing erratic instructions. 3. **Hysteresis:** It includes internal hysteresis to prevent "chattering" (rapid switching) when the supply voltage fluctuates near the 3.6V threshold. --- ### 3. Pin Configuration (SOT-23) | Pin No. | Name | Function | | :--- | :--- | :--- | | 1 | **GND** | Ground reference. | | 2 | **RESET** | Output signal. It stays low when $V_{CC} < V_{TH}$ and for the timeout period after $V_{CC}$ rises above $V_{TH}$. | | 3 | **$V_{CC}$** | Power supply input and monitored voltage pin. | --- ### 4. Application Circuit Example Since the output is **Open-Drain**, a pull-up resistor is required to interface with the microcontroller's reset pin. ```text Vcc (3.6V+) | [ R_pullup ] (e.g., 10k Ohm) | +------- To MCU Reset Pin | [ Pin 2: RESET ] [ ADM6348 ] [ Pin 1: GND ] | GND ``` --- ### 5. Part Number Breakdown * **ADM6348**: Base series (Active-Low, Open-Drain). * **36**: 3.6V nominal threshold voltage. * **ARTZ**: Package code (SOT-23) and Lead-free status. * **R7**: Tape and Reel packaging (7-inch reel).