SI32261-C-GM2R

Telecom Overview

The SI32261-C-GM2R is a single-chip dual ProSLIC device implementing two complete foreign exchange station (FXS) telephony interfaces. It operates from a 3.3 V supply and supports standard PCM/SPI or GCI bus digital interfaces. The device features built-in DC-DC converter controllers to optimize battery voltage generation, reducing heat and power consumption. Designed for wideband audio, it supports linefeed voltage ratings of –140 V and includes self-testing capabilities via an integrated DSP and monitor ADC. The component is housed in an 8 x 8 mm 60-pin QFN package.

Telecom Feature Summary

• Performs all BORSCHT functions within a compact dual-channel design
• Supports ultra-low power consumption with internal balanced or unbalanced ringing
• Includes integrated DC-DC controllers with direct connection to MOSFETs
• Facilitates simplified configuration through supported ProSLIC API

Telecom Applications

• VoIP gateways and routers
• xDSL IADs
• Analog Terminal Adapters (ATA)
• Wireless Local Loop (WLL)

Telecom Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging format and temperature grade. Ensure compatibility with existing system voltage requirements and interface protocols before procurement. Cross-reference part numbers with official distributors to validate authenticity and traceability.

Telecom Selection Notes

Select this component for applications requiring dual FXS channels with wideband voice support. Consider the –140 V rating for high-voltage ringing environments. Evaluate power efficiency needs, as the device supports tracking shared supplies for optimized performance. Verify that the host system can accommodate the required SPI or PCM interfaces.

Telecom Part Context

This device belongs to the Si32260/61 family of single-chip dual ProSLIC devices. It shares core functionality with the Si32260 but offers a higher battery voltage rating of –140 V compared to the –110 V rating of the Si32260. Both variants are designed for similar telephony applications and utilize the same package footprint.

Telecom Replacement Considerations

The Si32261-C-FMR serves as a functional substitute with identical electrical characteristics but differs in operating temperature range and packaging format.