The **ADM6346-35ARTZ-R7** is a low-power, precision microprocessor supervisory circuit designed to monitor power supply levels in digital systems. It belongs to a family of reset generators that ensure a system starts or resets correctly when voltage levels fluctuate. --- ## 1. Core Technical Specifications | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Analog Devices Inc. (ADI) | | **Reset Threshold** | 3.5V (indicated by the "-35" suffix) | | **Output Configuration** | Active-Low, Open-Drain | | **Reset Timeout** | 100 ms (minimum) | | **Supply Current** | 1 µA (typical) | | **Package / Case** | SOT-23-3 | | **Operating Temp** | -40°C to +85°C | --- ## 2. Key Features and Functionality ### A. Voltage Monitoring The device monitors the $V_{CC}$ supply. If the voltage drops below the preset threshold (3.5V), the device triggers a **Reset** signal. This prevents the microprocessor from executing code under unstable power conditions which could lead to data corruption. ### B. Open-Drain Output The "ARTZ" variant features an **Open-Drain** output. * **Requirement:** It requires an external pull-up resistor. * **Advantage:** This allows the device to interface with different logic levels (e.g., pulling up to 3.3V or 5V regardless of the monitored rail) and enables "Wire-OR" connections where multiple reset sources can trigger the same line. ### C. Power Efficiency With a typical current consumption of only **1 µA**, this part is highly optimized for battery-operated devices and portable electronics where power conservation is critical. --- ## 3. Pin Configuration | Pin No. | Name | Function | | :--- | :--- | :--- | | 1 | **GND** | Ground reference. | | 2 | **$\overline{RESET}$** | Active-low output. Stays low while $V_{CC}$ is below threshold and for the duration of the timeout period after $V_{CC}$ rises above threshold. | | 3 | **$V_{CC}$** | Power supply input and the voltage being monitored. | --- ## 4. Typical Application Circuit ```markdown Vcc (3.5V - 5.5V) | +-------+-----------+ | | | [10k Pull-up] [ADM6346] | | | | +-----------| Pin 3 (Vcc) | | +-------------------| Pin 2 (/RESET) ---> To MCU Reset Pin | | Pin 1 (GND) | ----- GND ``` ---