--- ## LM613IWMX Overview The **LM613IWMX** is a versatile analog integrated circuit manufactured by Texas Instruments. It is categorized as a **Super-Log Linear Device**, combining multiple functional building blocks into a single package. Specifically, it integrates operational amplifiers, a comparator, and an adjustable voltage reference. --- ### 1. Internal Components & Architecture The "LM613" series is unique because it combines three distinct functions: | Component | Quantity | Description | | :--- | :--- | :--- | | **Operational Amplifiers** | 2 | Dual op-amps suitable for signal conditioning and filtering. | | **Comparator** | 1 | A high-gain comparator for threshold detection. | | **Voltage Reference** | 1 | An adjustable shunt-type voltage reference (similar to a TL431). | ### 2. Technical Specifications The device is designed for low-power and battery-operated applications. * **Supply Voltage Range:** 2V to 36V (Single Supply) or ±1V to ±18V (Dual Supply). * **Operating Current:** Low supply current, typically around 450µA. * **Package Type:** **SOIC-16 (Wide)** (Indicated by the "WM" in the part number). * **Packaging Format:** **Tape & Reel** (Indicated by the "X" in the part number). --- ### 3. Pinout Configuration (SOIC-16) The LM613IWMX utilizes 16 pins to accommodate its multi-functional nature: | Pin Type | Description | | :--- | :--- | | **Op-Amp 1 & 2** | Standard Inverting, Non-inverting inputs, and Outputs. | | **Comparator** | Inverting/Non-inverting inputs and Output. | | **Reference** | Reference output and Feedback/Adjustment pin. | | **Power** | $V^+$ (Positive Supply) and $V^-$ (Ground or Negative Supply). | --- ### 4. Key Applications Because it contains a reference, a comparator, and op-amps, it is commonly used in: 1. **Battery Chargers:** The reference sets the voltage limit, the comparator detects "full" status, and op-amps control charging current. 2. **Power Supply Monitors:** For over-voltage or under-voltage protection circuits. 3. **Sensor Interfaces:** Amplifying weak signals (Op-amps) and comparing them against a setpoint (Reference + Comparator). ### 5. Part Number Decoding `LM613` + `I` + `WM` + `X` * **LM613:** Base model (Dual Op-Amp, Comparator, Reference). * **I:** Industrial Temperature Grade (–40°C to +85°C). * **WM:** Wide Body SOIC (Small Outline Integrated Circuit). * **X:** Tape and Reel packaging. ---