The **ADM6346-44ARTZ-R7** is a low-power, ultra-low voltage microprocessor supervisory circuit manufactured by **Analog Devices**. It is primarily used to monitor power supply levels in digital systems and initiate a reset during power-up, power-down, or brownout conditions. --- ### ## Technical Specifications The following table highlights the core electrical characteristics of this specific variant: | Parameter | Specification | | :--- | :--- | | **Threshold Voltage ($V_{TH}$)** | 4.38V (Nominal) | | **Supply Current ($I_{CC}$)** | 0.7 $\mu$A (Typical) | | **Output Type** | Active-Low, Open-Drain | | **Reset Timeout Period** | 100 ms (Minimum) | | **Operating Temperature** | -40°C to +85°C | | **Package / Case** | 3-Lead SOT-23 | | **Mounting Type** | Surface Mount | --- ### ## Key Features 1. **Ultra-Low Power Consumption:** With a typical current draw of only **700 nA**, this part is ideal for battery-operated devices where power conservation is critical. 2. **Precision Monitoring:** It is designed to monitor a 4.5V or 5V supply rail (the "44" in the part number denotes a 4.38V threshold). 3. **Open-Drain Output:** The active-low reset output ($\overline{RESET}$) requires an external pull-up resistor. This allows the device to interface with different logic voltage levels (Level Shifting). 4. **Glitch Immunity:** The device is engineered to ignore fast transients on the $V_{CC}$ line, preventing nuisance resets. --- ### ## Pin Configuration The device uses a standard 3-pin SOT-23 layout: | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | **GND** | Ground reference. | | 2 | **$\overline{RESET}$** | Active-low output. Remains low while $V_{CC}$ is below threshold and for the duration of the reset timeout. | | 3 | **$V_{CC}$** | Power supply input and monitored voltage. | --- ### ## Typical Application Circuit The ADM6346 is commonly placed between a power source and a Microcontroller (MCU). ```mermaid graph LR VCC[+5V Supply] -->|Pin 3| IC[ADM6346] VCC -->|Pull-up Resistor| R[R1] R -->|Pin 2| IC IC -->|Reset Signal| MCU[Microcontroller Reset Pin] GND[Ground] --- IC ``` --- ### ## Decoding the Part Number * **ADM6346:** Base Model (Low power reset circuit). * **44:** Threshold voltage code (4.38V). * **ARTZ:** Package code (SOT-23) and RoHS compliance (Z). * **R7:** Packaging format (7-inch Tape and Reel, 3000 pieces).