The **ADM6348-33ARTZ-R7** is a low-voltage, microprocessor supervisory circuit manufactured by Analog Devices. It is designed to monitor power supplies and provide a reset signal to a processor during power-up, power-down, and brownout conditions. ### Technical Specifications The following table summarizes the key electrical parameters: | Parameter | Specification | | :--- | :--- | | **Threshold Voltage** | 3.3V (Typical) | | **Reset Type** | Active-Low, Open-Drain | | **Supply Current** | 1 µA (Typical) | | **Timeout Period** | 100 ms (Minimum) | | **Operating Temperature** | -40°C to +85°C | | **Package** | SOT-23 (3-Lead) | | **Input Voltage Range** | 1V to 5.5V | --- ### Core Functions & Architecture #### 1. Precision Voltage Monitoring The device constantly monitors the $V_{CC}$ pin. When the supply voltage drops below the factory-preset threshold ($3.3V$), the device triggers a **Reset** signal. This prevents the microprocessor from executing code under unstable voltage conditions, which could lead to data corruption or system crashes. #### 2. Power-On Reset (POR) When power is first applied, the device keeps the Reset line active for a specific **Timeout Period** (minimum 100ms). This ensures that the system clock and power rails have stabilized before the microprocessor starts its initialization sequence. #### 3. Open-Drain Output The "ARTZ" variant typically features an **Open-Drain** output. This requires an external pull-up resistor connected to a voltage rail (usually the same as the micro-controller's I/O voltage). This architecture allows for "wired-OR" logic if multiple reset sources are needed. --- ### Part Number Breakdown Understanding the suffix nomenclature: * **ADM6348**: The base series (Microprocessor Supervisory Circuit). * **33**: Indicates the 3.3V nominal threshold voltage. * **ARTZ**: Refers to the SOT-23 package and RoHS compliance (Lead-free). * **R7**: Indicates the packaging format (7-inch Tape and Reel). --- ### Typical Application Circuit Below is a representation of how the component is integrated into a digital system: ```mermaid graph LR VCC(Power Supply 3.3V) --> VCC_Pin[ADM6348 VCC] VCC --> PullUp[Resistor 10k] PullUp --> Reset_Line[Reset Output] VCC_Pin --> GND[Ground] Reset_Line --> MCU_Reset[Microcontroller Reset Pin] ```