### Technical Overview: ADM1816-R23AKSZ-R7 The **ADM1816-R23AKSZ-R7** is a high-precision voltage monitoring device, specifically a **Microprocessor Supervisory Circuit**. It is designed to monitor power supply voltages in microprocessor systems and provide a reset signal to the processor during power-up, power-down, and brownout conditions. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Analog Devices Inc. (ADI) | | **Threshold Voltage** | 2.31V (Nominal) | | **Reset Type** | Active-Low | | **Output Type** | Push-Pull | | **Package** | SC-70 (3-lead) | | **Supply Current** | 10 $\mu$A (Typical) | | **Operating Temperature** | -40°C to +105°C | --- ### 2. Functional Description The device ensures that a system does not execute code during unstable power conditions. It performs three primary functions: 1. **Power-On Reset:** When power is first applied, the device keeps the `RESET` line active until the voltage exceeds the threshold and stabilizes for a specific "timeout" period (typically 150ms). 2. **Brownout Detection:** If the supply voltage drops below the 2.31V threshold, the device immediately pulls the `RESET` pin low to prevent logic errors or memory corruption. 3. **Push-Pull Output:** Unlike open-drain monitors, the push-pull configuration does not require an external pull-up resistor, reducing the total component count on the PCB. --- ### 3. Pin Configuration The ADM1816 in the SC-70 package typically follows this pinout: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 | **RESET** | Active-Low Reset Output. | | 2 | **Vcc** | Supply Voltage and Monitor Input. | | 3 | **GND** | Ground Reference. | --- ### 4. Part Number Breakdown The suffixing provides specific details about the manufacturing and packaging: * **R23:** Indicates the voltage threshold (2.31V). * **AKSZ:** Refers to the SC-70 package style and lead-free materials. * **R7:** Indicates the packaging format (7-inch Reel, usually containing 3,000 units). ---