## MC4558-S08-R Electronic Component Overview The **MC4558-S08-R** is a high-performance monolithic dual operational amplifier. It is widely used in audio pre-amplifiers, signal conditioning, and active filters due to its internal compensation and robust design. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the MC4558: | Parameter | Specification | | :--- | :--- | | **Type** | Dual Operational Amplifier | | **Package** | SOP-8 (Small Outline Package) | | **Supply Voltage Range** | ±4V to ±18V (Dual) / 8V to 36V (Single) | | **Bandwidth (Unity Gain)** | 3.0 MHz | | **Slew Rate** | 1.1 V/µs | | **Input Bias Current** | 30 nA (Typical) | | **Input Offset Voltage** | 2.0 mV (Typical) | | **Voltage Gain** | 100 dB | --- ### 2. Part Number Breakdown (MC4558-S08-R) Understanding the suffix nomenclature is essential for sourcing and PCB design: * **MC4558**: The base part number for the dual general-purpose Op-Amp. * **S08**: Indicates the package type, specifically **SOP-8** (Surface Mount Device). * **R**: Typically denotes **Tape & Reel** packaging for automated assembly lines. --- ### 3. Pin Configuration (SOP-8) The MC4558 follows the industry-standard pinout for dual operational amplifiers: ```text TOP VIEW +----U----+ OUT1| 1 8 | VCC+ IN1-| 2 7 | OUT2 IN1+| 3 6 | IN2- VCC-| 4 5 | IN2+ +---------+ ``` --- ### 4. Features & Advantages * **No Frequency Compensation Required:** The chip is internally compensated for stability. * **Short-Circuit Protection:** Features internal protection to prevent damage during output shorts. * **No Latch-up:** Designed to prevent the common latch-up issues found in older Op-Amp designs. * **Wide Common-Mode Range:** Operates effectively even when input voltages approach the supply rails. --- ### 5. Common Applications 1. **Audio Processing:** Used in mixers, tone control circuits, and headphone amplifiers because of its low noise and high gain. 2. **Active Filters:** Ideal for Low-pass, High-pass, and Band-pass filters in analog signal chains. 3. **Instrumentation:** Buffering signals and performing mathematical operations (addition/subtraction) in sensor circuits. 4. **Voltage Follower:** Used to isolate different stages of a circuit to prevent loading effects.