The **ADM6328-22ARTZ-R7** is a precision voltage monitoring device, specifically a **microprocessor supervisory circuit** manufactured by Analog Devices. It is designed to monitor power supply voltage levels in digital systems and initiate a reset signal if the voltage falls below a predefined threshold. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Threshold Voltage ($V_{TH}$)** | 2.20V (Fixed) | | **Supply Current** | 1 $\mu$A (Typical) - Ultra Low Power | | **Output Type** | Open-Drain, Active-Low | | **Reset Timeout Period** | 100 ms (Minimum) | | **Package / Case** | SOT-23-3 (3-Lead Small Outline Transistor) | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Detailed Part Breakdown * **ADM6328:** The base model series for high-reliability supervisory circuits. * **-22:** Refers to the nominal threshold voltage of **2.2V**. The device triggers a reset if the monitored supply drops below this point. * **ARTZ:** Indicates the package type (SOT-23) and that the part is RoHS compliant (Pb-free). * **R7:** Refers to the tape and reel size (7-inch reel, typically containing 3,000 units). --- ### 3. Functional Features #### A. Low Power Consumption One of the standout features of this component is its extremely low supply current (1 $\mu$A). This makes it ideal for battery-operated devices where energy conservation is critical. #### B. Open-Drain Output Since the output is **Open-Drain**, it requires an external pull-up resistor connected to a voltage source (which can be different from the monitored supply). This allows the chip to interface easily with different logic levels (e.g., 1.8V, 3.3V, or 5V). #### C. Reset Glitch Immunity The ADM6328 is designed to ignore fast transients or "glitches" on the $V_{CC}$ line. This prevents the system from undergoing unnecessary resets due to minor electrical noise. --- ### 4. Typical Application Circuit The chip is placed between the power supply and the Microcontroller (MCU). ```text [ Vcc (2.2V - 5V) ] | +------+------+-------+ | | | [Vcc] [Pull-up Res] | | | | [ADM6328] [RESET Pin on MCU] | [GND] ``` ### 5. Common Applications * Microprocessor and Microcontroller systems. * Portable/Battery-powered equipment. * Intelligent instruments. * Critical CPU/ASIC monitoring. ---