## ADM6326-31ARTZ-R7: Technical Overview The **ADM6326-31ARTZ-R7** is an ultra-low-power microprocessor supervisory circuit manufactured by **Analog Devices**. It is designed to monitor power supply voltages in microprocessor-based systems and initiate a reset pulse during power-up, power-down, and brownout conditions. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Reset Threshold** | 3.08V (nominal) | | **Supply Current** | 0.6 µA (Ultra-low power) | | **Output Type** | Push-Pull, Active-Low | | **Reset Timeout Period** | 100 ms (minimum) | | **Operating Voltage Range** | 1.0 V to 5.5 V | | **Operating Temperature** | -40°C to +85°C | | **Package / Case** | SOT-23-3 | --- ### 2. Core Functionality The device monitors the $V_{CC}$ pin. Its primary functions include: 1. **Power-On Reset:** When power is first applied, the device keeps the `RESET` line active (low) until the voltage exceeds the threshold (3.08V). It then waits for the **Reset Timeout Period** (approx. 100ms) before releasing the reset line to allow the CPU to start. 2. **Brownout Detection:** If the supply voltage drops below the 3.08V threshold during operation, the device immediately pulls the `RESET` line low to prevent the processor from executing corrupted data or code. 3. **Glitch Immunity:** The device is engineered to ignore fast transients (noise) on the $V_{CC}$ line, preventing unnecessary system resets. --- ### 3. Pin Configuration | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | `RESET` | Active-Low Output. Remains low while $V_{CC}$ is below threshold. | | 2 | $V_{CC}$ | Supply Voltage / Monitor Input. | | 3 | GND | Ground. | --- ### 4. Typical Applications * **Battery-Powered Equipment:** Due to the extremely low current draw (0.6 µA). * **Embedded Systems:** Microcontrollers and DSPs requiring reliable startup. * **Critical Controllers:** Industrial and automotive systems where brownout protection is vital. * **Intelligent Instruments:** Handheld meters and sensors. --- ### 5. Part Number Breakdown (ADM6326-31ARTZ-R7) * **ADM6326:** Base model (Push-pull output). * **31:** Represents the 3.08V threshold. * **ARTZ:** Refers to the SOT-23 package and Pb-free (RoHS) status. * **R7:** Indicates the packaging format (7-inch Reel, 3000 pieces).