The SI32280-A-FMR from Silicon Labs is a dual-channel ProSLIC® device designed for analog telephony interfaces in VoIP and communication systems. If you’re building voice-enabled systems and need consistent performance with efficient power handling, this is a strong option.
This device integrates two complete FXS (foreign exchange station) channels in a single package, helping reduce board space while simplifying design. It also includes built-in DC-DC converter control and wideband audio support, making it well-suited for modern voice applications where performance and efficiency matter.
Here’s what you’re getting with this part.
Key Features of the SI32280-A-FMR
A dual FXS device designed for telephony systems
It integrates two complete FXS channels into a single package, helping reduce component count and simplify system design.
It supports wideband voice for better audio quality
It enables quick routing and filtering decisions, helping improve overall system performance.
It has built-in dc-dc converter control
It automatically generates the required battery voltage for different line states, improving efficiency and reducing heat.
It is designed for low power consumption
Optimised to minimise power usage while maintaining stable and reliable performance.
It includes integrated diagnostics and testing features
Built-in DSP and monitoring capabilities help with system testing and troubleshooting.
It supports flexible digital interfaces
Compatible with PCM, SPI, and ISI interfaces, making integration easier across different system designs.
This part is typically used in: