The UA4558HC is a dual operational amplifier (op-amp) manufactured by Fairchild/ON Semiconductor. This integrated circuit contains two independent, high-gain, internally compensated operational amplifiers designed for a wide range of analog applications. It is known for its stable performance and cost-effectiveness.

Applications

• Audio Amplifiers: Used in audio preamplifiers, headphone amplifiers, and active filters for audio processing.
• Signal Conditioning: Employed in signal conditioning circuits to amplify, filter, or buffer analog signals.
• Active Filters: Used in the design of low-pass, high-pass, band-pass, and band-stop active filters.
• Instrumentation Amplifiers: Incorporated into instrumentation amplifier designs for precise signal amplification.
• Voltage Followers: Used as voltage followers (buffer amplifiers) to isolate circuits and provide high input impedance.

Features

• Dual Operational Amplifier: Contains two independent op-amps in a single package.
• Internal Compensation: Internally compensated for stability, simplifying circuit design.
• High Voltage Gain: Provides a large voltage gain for signal amplification.
• Wide Supply Voltage Range: Can operate over a broad range of supply voltages.
• Short-Circuit Protection: Offers short-circuit protection to prevent damage to the device.

Benefits

• Space Saving: Integrating two op-amps into a single package saves board space.
• Simplified Design: Internal compensation simplifies circuit design and eliminates the need for external compensation components.
• Versatile Applications: The wide supply voltage range makes it suitable for a variety of applications.
• Stable Performance: Known for its stable and reliable performance.
• Cost-Effective: Provides a cost-effective solution for applications requiring multiple op-amps.

Technical Specifications: The UA4558HC typically operates from a supply voltage of ±5V to ±15V. Input bias current is generally in the range of nanoamperes. Slew rate, a critical parameter for op-amp performance, is typically around 1V/µs. It is available in a variety of packages, including DIP and SOIC. Refer to the specific datasheet from Fairchild/ON Semiconductor for precise specifications.