The **UTL331AG-AE5-R** is a specific electronic component, typically manufactured by UTC (Unisonic Technologies Co., Ltd). It is a **Low Voltage Operational Amplifier** designed for cost-effective, general-purpose applications. Below is a detailed breakdown of its specifications and features. --- ### 1. General Specifications The part number can be decoded to understand its packaging and characteristics: * **UTL331**: The base model (Single Low Power Op-Amp). * **G**: Halogen-free and Lead-free (RoHS compliant). * **AE5**: SOT-23-5 packaging. * **R**: Tape and Reel (Packaging method). | Feature | Specification | | :--- | :--- | | **Component Type** | Single Operational Amplifier | | **Supply Voltage Range** | 2.0V to 36V (Single) or ±1V to ±18V (Dual) | | **Input Offset Voltage** | Typ. 2mV | | **Large Signal Voltage Gain** | 100 dB | | **Package Type** | SOT-23-5 | | **Operating Temperature** | -40°C to +85°C | --- ### 2. Key Internal Characteristics The UTL331 is designed to be highly versatile, sharing similarities with the industry-standard LM331 or LM321 series in certain configurations. #### Power Efficiency * **Low Current Drain**: It consumes very little power regardless of the supply voltage. * **Wide Input Range**: The common-mode input voltage range includes ground, allowing direct sensing near 0V without requiring a negative power supply. #### Output Performance * The output voltage is compatible with TTL, DTL, and CMOS logic systems. * It features short-circuit protected outputs to prevent damage during testing or accidental grounding. --- ### 3. Pin Configuration (SOT-23-5) The SOT-23-5 package is a small, surface-mount footprint with the following standard pinout for this model: | Pin Number | Symbol | Description | | :--- | :--- | :--- | | 1 | IN+ | Non-Inverting Input | | 2 | V- | Negative Supply (or Ground) | | 3 | IN- | Inverting Input | | 4 | OUT | Amplifier Output | | 5 | V+ | Positive Power Supply | --- ### 4. Typical Applications Because of its small size and wide voltage range, the UTL331AG-AE5-R is commonly found in: 1. **Battery Powered Equipment**: Due to low power consumption. 2. **Transducer Amplifiers**: Amplifying small signals from sensors. 3. **Current Sensing**: Used in power management circuits to monitor current flow. 4. **Voltage Follower**: Used as a buffer to prevent circuit loading. --- ### 5. Equivalent Components If the UTL331AG-AE5-R is unavailable, the following parts often serve as functional equivalents (though pinouts and tolerances should always be verified in the specific datasheet): * **LM321** (Single version of LM358) * **MCP6001** (Microchip) * **TLV271** (Texas Instruments)