## Overview of the LMV393DMR2G The **LMV393DMR2G** is a low-voltage, dual-channel general-purpose comparator manufactured by **onsemi**. It is designed to operate with low power consumption and a wide range of supply voltages, making it ideal for battery-powered systems and portable electronics. --- ### 1. Key Technical Specifications The following table highlights the primary electrical characteristics of the LMV393DMR2G: | Parameter | Specification | | :--- | :--- | | **Number of Channels** | 2 (Dual) | | **Supply Voltage (Single)** | 2.7V to 5.0V | | **Supply Current (per channel)** | ~60 $\mu$A | | **Output Type** | Open Collector | | **Propagation Delay** | 200 ns (typical) | | **Input Offset Voltage** | 7 mV (max) | | **Package Type** | Micro8 (MSOP-8) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Functional Description The LMV393 is essentially a "low voltage" version of the industry-standard LM393. Its internal circuitry is optimized for low-power operation and modern logic levels. #### Open Collector Output The device features an **Open Collector** output stage. This means: * The output can only "sink" current (pull the voltage to ground). * An external **pull-up resistor** is required to provide a "high" logic level. * This allows for "wired-OR" logic connections and level shifting (e.g., the comparator runs at 3V but pulls up to a 5V logic rail). #### Input Common Mode Range The input common-mode voltage range includes ground ($V_{EE}$), which is critical for sensing signals in single-supply applications. --- ### 3. Pin Configuration (Micro8 / MSOP-8) | Pin Number | Symbol | Function | | :--- | :--- | :--- | | 1 | OUT A | Output of Comparator A | | 2 | IN A- | Inverting Input of Comparator A | | 3 | IN A+ | Non-inverting Input of Comparator A | | 4 | GND | Ground / Negative Supply ($V_{EE}$) | | 5 | IN B+ | Non-inverting Input of Comparator B | | 6 | IN B- | Inverting Input of Comparator B | | 7 | OUT B | Output of Comparator B | | 8 | $V_{CC}$ | Positive Supply Voltage | --- ### 4. Typical Applications * **Battery Monitoring:** Low current draw makes it perfect for "Low Battery" indicator circuits. * **Zero-Crossing Detectors:** Used in AC power monitoring. * **Threshold Detectors:** Converting analog sensor signals into digital high/low signals. * **Oscillators:** Can be used to create simple square-wave generators. --- ### 5. Part Number Breakdown * **LMV393**: Device series (Low Voltage Dual Comparator). * **DMR2**: Denotes the Micro8 / MSOP-8 package style. * **G**: Indicates a Pb-free (Lead-free) / Green component.