Infineon PEF22822FV2: High-Performance SLIC for Analog Voice and xDSL Applications

The seamless integration of traditional analog telephony with modern high-speed data services remains a critical requirement in today’s communication systems. Addressing this need, the Infineon PEF22822FV2 stands out as a high-performance Subscriber Line Interface Circuit (SLIC) designed to support both conventional analog voice and xDSL applications. This highly integrated component is engineered to deliver superior performance, reliability, and flexibility for next-generation customer premises equipment (CPE) and central office (CO) solutions.

At its core, the PEF22822FV2 is a versatile system-on-chip (SoC) that consolidates the BORSCHT functions (Battery feed, Overvoltage protection, Ringing, Supervision, Coding, Hybrid, and Testing) essential for analog telephone interfaces. Its robust architecture is specifically optimized to coexist with xDSL technologies, such as ADSL2+ and VDSL2, on the same twisted-pair copper line. This is achieved through advanced filtering and a highly linear design that minimizes any mutual interference between the high-frequency data signals and the low-frequency voice band. The result is pristine voice quality and stable, high-speed data connectivity without compromise.

A key advantage of this SLIC is its programmable and adaptive feature set. It supports a wide range of global telephony standards and can be configured for various battery voltages, ringing signals, and country-specific requirements. This programmability significantly simplifies design-in and inventory management for manufacturers serving a global market. Furthermore, the device incorporates sophisticated power management capabilities, enabling designs that meet stringent energy efficiency standards without sacrificing performance.

The PEF22822FV2 also excels in providing enhanced protection and diagnostics. It features comprehensive built-in protection mechanisms against overvoltage and overcurrent conditions, often caused by lightning surges or power line induction. Additionally, its integrated diagnostic functions allow for precise line monitoring and fault detection, enabling service providers to perform remote testing and improve network reliability and maintenance efficiency.

In application, this SLIC is ideal for Voice over DSL (VoDSL) gateways, integrated access devices (IADs), and miniaturized xDSL line cards where board space and power consumption are at a premium. Its high level of integration reduces the need for external components, lowering the total system cost and accelerating time-to-market for end products.

ICGOOODFIND: The Infineon PEF22822FV2 is a pinnacle of integration and performance, offering designers a future-proof, single-chip solution to bridge the gap between legacy analog voice services and modern broadband data. Its ability to ensure flawless coexistence, coupled with its programmability and robust protection, makes it an indispensable component for evolving telecommunications infrastructure.

Keywords:

SLIC (Subscriber Line Interface Circuit)

xDSL Applications

Analog Telephony

VoDSL (Voice over DSL)

Line Interface