The FX224LS is a high-performance, low-power voiceband codec from CML Microcircuits. It is designed for a wide range of voice communication applications, providing robust and reliable voice encoding and decoding capabilities. This codec integrates essential functions to minimize external component requirements and simplify system design. It is a versatile solution suitable for both narrowband and wideband voice applications.

Applications

• PMR/LMR systems
• Digital mobile radio (DMR)
• Voice over IP (VoIP) applications
• Intercom systems
• Wireless handsets
• Telemetry systems
• Marine radio

Features

• Low-power operation for extended battery life
• Selectable µ-Law/A-Law companding
• Programmable gain and attenuation
• Integrated sidetone generation
• Line driver and receiver interface
• SPI control interface for flexible configuration
• On-chip filtering to reduce external component count
• Digital noise reduction capabilities
• Voice activity detection
• Wide supply voltage range

Benefits

• Improved voice quality: The FX224LS provides clear and intelligible voice communication, even in noisy environments.
• Reduced power consumption: Its low-power design enables longer battery life in portable devices.
• Simplified system design: The integrated features minimize the need for external components, reducing board space and cost.
• Flexible configuration: The SPI interface allows for easy customization of the codec's parameters to meet specific application requirements.
• Enhanced reliability: The robust design ensures reliable operation in demanding environments.
• Cost-effective solution: The combination of performance and integration makes the FX224LS a cost-effective choice for voice communication applications.

Additional Details

The FX224LS operates from a single supply voltage, typically in the range of 2.7V to 3.6V. It features a comprehensive set of programmable parameters, including gain, attenuation, and filtering characteristics, which can be configured via the SPI interface. The codec also includes built-in sidetone generation, which provides feedback to the user during voice communication. Its integrated filtering reduces the need for external components, simplifying system design and reducing board space. The FX224LS is available in a small footprint package, making it suitable for compact portable devices.

The digital noise reduction feature enhances voice clarity by filtering out background noise. The voice activity detection function automatically detects the presence of speech, enabling efficient power management. The FX224LS is compliant with industry standards for voiceband codecs, ensuring interoperability with other communication systems. The codec is designed for harsh environments and provides protection against electrostatic discharge (ESD). Its robust design and comprehensive feature set make it an ideal choice for a wide range of voice communication applications.