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The LC75411 is a CMOS LSI manufactured by SANYO (now part of ON Semiconductor) designed for electronic volume and tone control in audio applications.

Specifications:

• Supply Voltage: 5V (typical)
• Operating Temperature Range: -20°C to +75°C
• Package: 64-pin QFP (Quad Flat Package)
• Control Interface: Serial I²C Bus
• Channels: 2-channel (stereo)
• Volume Control Range: -79.5dB to +15.5dB (0.5dB steps)
• Bass Control Range: -14dB to +14dB (2dB steps)
• Treble Control Range: -14dB to +14dB (2dB steps)
• Balance Control: Adjustable left/right balance
• Input Selector: Multiple input switching capability
• THD (Total Harmonic Distortion): Low distortion for high-fidelity audio

Descriptions:

The LC75411 is a digital control IC for audio systems, providing volume, tone (bass/treble), balance, and input selection functions. It is controlled via an I²C serial interface, making it suitable for integration into microprocessor-based audio systems.

Features:

• Digital Volume Control: Precise adjustment in 0.5dB steps
• Tone Control: Adjustable bass and treble levels
• Balance Control: Fine-tunes left/right channel balance
• Low Noise & Distortion: Ensures high-quality audio output
• I²C Bus Control: Simple microcontroller interfacing
• Multiple Inputs: Supports switching between multiple audio sources
• Standby Function: Low power consumption in standby mode

This IC is commonly used in car audio systems, home stereos, and other audio processing applications requiring digital control of sound parameters.