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The LC7230 is a CMOS LSI (Large-Scale Integration) chip manufactured by SANYO Semiconductor (now part of ON Semiconductor). It is primarily designed for PLL (Phase-Locked Loop) frequency synthesizer applications, commonly used in radio tuners and communication systems.

Key Specifications:

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -20°C to +70°C
• Frequency Range: Supports AM/FM band tuning
• Package Type: Typically available in DIP (Dual In-line Package) or SOP (Small Outline Package)
• Low Power Consumption: Optimized for battery-operated devices
• Built-in Prescaler: Supports programmable frequency division
• Serial Data Interface: Allows microcontroller-based control

Features:

• Integrated PLL Synthesizer: Enables precise frequency control
• High Noise Immunity: Ensures stable operation in RF environments
• Low Phase Noise: Improves signal clarity
• Programmable Reference Frequency: Adjustable via external components
• Auto Search Function: Supports automatic station tuning

Applications:

• Car Radios
• Portable Radios
• Communication Equipment

This chip was widely used in SANYO's radio tuner modules and other consumer electronics requiring stable frequency synthesis.

*(Note: Since SANYO Semiconductor was acquired by ON Semiconductor, newer versions or replacements may be available under ON Semiconductor branding.)*