The SM8707GV-G-E2 is a single-chip FM stereo transmitter integrated circuit manufactured by NPC (Nippon Precision Circuits). It's designed to transmit high-quality stereo audio signals over the FM band (76-108 MHz). This IC incorporates all necessary functions for FM transmission, including stereo modulation, pre-emphasis, and RF amplification.

Applications:

• Wireless microphones
• FM transmitters for portable audio players
• FM broadcasting systems
• Wireless audio links
• Educational electronics projects

Features:

• Complete FM stereo transmitter on a single chip
• Integrated stereo modulator
• Integrated pre-emphasis circuit (50/75 μs selectable)
• RF amplifier with adjustable output power
• Low harmonic distortion
• Wide operating voltage range
• Low current consumption
• Small package size

Benefits:

• High-quality stereo audio transmission
• Reduced external component count, simplifying circuit design
• Adjustable output power allows for optimization of transmission range
• Low power consumption extends battery life in portable applications
• Compact size facilitates integration into small devices
• Pre-emphasis enhances audio fidelity by reducing noise

Additional Details:

The SM8707GV-G-E2 supports pre-emphasis settings of both 50 μs and 75 μs, catering to different regional FM broadcasting standards. The output power can be adjusted, allowing designers to optimize the transmission range based on the specific application requirements. The IC operates with a low supply current, making it suitable for battery-powered applications. The package type typically used is a small surface-mount package, enabling easy integration into compact electronic devices.

The SM8707GV-G-E2 utilizes a phase-locked loop (PLL) for frequency generation, ensuring stable and accurate transmission frequencies across the FM band. It also incorporates built-in protection features to prevent damage from electrostatic discharge (ESD) and other potential hazards.