SI32261-C-FM1
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| Part Number | SI32261-C-FM1 |
|---|---|
| Manufacturer |
 Skyworks Solutions
|
| Description | The SI32261-C-FM1 is a high-performance dual-channel ProSLIC subscriber line interface circuit (SLIC) originally developed by Silicon Laboratories (Silicon Labs) and now offered under Skyworks Solutions. Designed for modern telecommunications equipment, VoIP gateways, and analog telephone interfaces, this integrated circuit combines two wideband-capable FXS channels with integrated voice CODEC functionality, providing an efficient solution for connecting traditional analog telephones to digital communication networks. The device integrates essential subscriber line functions, including analog voice conversion, line feeding, ringing control, and subscriber line supervision, within a single semiconductor package. Its dual-channel architecture allows two independent analog telephone connections to be supported, reducing component count, simplifying PCB design, and improving overall system integration in multiport telecommunications equipment. The SI32261-C-FM1 supports wideband voice applications and provides digital communication interfaces including PCM, SPI, and GCI, enabling integration with communication processors, embedded controllers, and VoIP system-on-chip platforms. Its programmable operating characteristics allow designers to configure telephone line parameters and adapt the device to different regional telecommunication requirements. Operating from a nominal 3.3V supply voltage with a specified range of 3.13V to 3.47V, the device is designed for efficient digital system integration. The SI32261 variant supports a maximum battery supply magnitude of 140V (VBAT down to -140V), enabling high-voltage subscriber line operation and ringing applications when used with an appropriately designed external power supply and line interface circuitry. The integrated ProSLIC architecture supports tracking or shared DC-DC converter configurations, offering flexibility in power supply design and helping optimize power consumption in telecommunications systems. Advanced line monitoring and programmable control features contribute to reliable telephone operation, while the integrated CODEC architecture reduces the need for additional analog signal-processing components. The SI32261-C-FM1 is supplied in a compact 60-pin LGA surface-mount package measuring 8 × 8 mm, making it suitable for densely populated communication circuit boards. It is specified for a commercial operating temperature range of 0°C to +70°C and is intended for equipment operating within controlled environmental conditions. The SI32261-C-FM1 is suitable for applications including VoIP gateways, analog telephone adapters (ATA), IP-PBX systems, residential gateways, integrated access devices, telecommunications line cards, and multiport FXS communication equipment. Its combination of dual-channel subscriber line functionality, wideband voice capability, flexible digital interfaces, and integrated analog circuitry makes it a practical solution for modern voice communication hardware. |
| Product Group | SLIC |
| MOQ | 348 pcs |
| SPQ | 348 pcs |
| Figure/Case | 60-QFN |
| Package | TRAY Pack |
 PDF Datasheet | |
| Ship From | Hong Kong |
| Shipment Way | DHL / Fedex / TNT / UPS / Others |
| Delivery Term | Ex-Works |
| Send RFQ | sales@signalhk.com |
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SI32261-C-FM1
SI32261-C-FM1