Applications:

• Ultrasonic Remote Control Transmitters
• Wireless Control Systems
• Security Systems
• Industrial Control Devices
• Toys and Consumer Electronics

Features:

• Low Power Consumption
• On-Chip Oscillator
• Amplitude Modulation (AM) Capability
• Single Supply Operation
• Multiple Channel Capability
• Adjustable Carrier Frequency

Benefits:

• Extended Battery Life in Remote Control Applications
• Reduced Component Count due to Integrated Oscillator
• Simplified Modulation Scheme for Easy Implementation
• Flexible Power Supply Options
• Increased Number of Controllable Functions
• Optimized for Ultrasonic Transmission

Additional Details:

The MC145402L is optimized for generating and modulating ultrasonic carrier signals for remote control applications. It features an on-chip oscillator that can be adjusted using external components to set the desired carrier frequency. It is designed for amplitude modulation (AM) which simplifies the encoding and decoding of command signals. The device operates from a single power supply, reducing the complexity of the power supply design. Multiple channels can be implemented by using different modulation patterns. This device’s low power consumption allows for long battery life in remote control devices. The circuit is commonly found in television, home theater, and other consumer electronic remote control systems that operate via ultrasound.