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Infineon Technologies PEF4268FV1.1
- Part No.:
- PEF4268FV1.1
- Manufacturer:
- Infineon Technologies
- Category:
- Encoders, Decoders, Converters
- Package:
- -
- Datasheet:
-
PEF4268FV1.1.pdf
- Description:
- PEF4268 - DUSLIC: SUBSCRIBER LIN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
PEF4268FV1.1 from Infineon Technologies is a ringing Subscriber Line Interface Circuit (SLIC) with integrated DC/DC converter, designed for POTS line interface in CPE systems. It generates -150 V DC feed and up to 85 Vrms sinusoidal ringing from a single 9–40 V unregulated supply, supports ITDF per GR-909, and features patented low-power ring mode for VoIP gateways and ATAs.
For engineers reviewing the PEF4268FV1.1 datasheet, PEF4268FV1.1 pinout, PEF4268FV1.1 application, or PEF4268FV1.1 equivalent, key selection criteria include programmable DC feed, transversal current sensing, SLIC-DC synchronization capability for multi-line systems, and compatibility with VINETIC-2CPE and DuSLIC codecs.
Technical Context
The PEF4268FV1.1 implements a fully integrated SLIC architecture with on-chip buck-boost DC/DC converter delivering regulated -150 V output. Its patented ring mode dynamically reduces quiescent current during ringing, lowering thermal load without compromising waveform fidelity.
It uses a standard SLIC-Codec interface compatible with SLIC-S/E/P families and extends support to VINETIC-2CPE via updated timing and control signaling. Synchronization of up to eight devices enables scalable multi-line POTS implementations in compact VoIP gateway designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DC Feed Voltage | -150 V output enables full compliance with global POTS loop requirements including long-loop scenarios. |
| Ringing Output | Up to 85 Vrms sinusoidal - meets ITU-T G.961 and GR-909 ringing amplitude specifications. |
| Supply Input Range | Single unregulated 9–40 V input simplifies power architecture and eliminates need for external regulators. |
| Ring Mode Power Reduction | Patented dynamic current reduction lowers chip dissipation by >40% during ringing vs. conventional SLICs. |
| ITDF Support | Integrated Test and Diagnostic Function enables automated line testing per Telcordia GR-909. |
| Synchronization Capacity | Supports daisy-chained sync of up to 8 units for coordinated multi-channel ringing and feed control. |
Pinout & Package
PEF4268FV1.1 is housed in a P-TQFP-48-1 package (7 mm × 7 mm, 0.5 mm pitch), optimized for high-density VoIP gateway PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TIP / RING | Line interface differential pair | Direct connection to telephone line; supports 2-wire POTS interface with hybrid coupling. |
| ACP / ACN / DCP / DCN | DC/DC converter terminals | Connect external inductor, diode, and capacitors to generate -150 V feed and ringing voltage. |
| IT / ACP / ACN | Transversal current sense inputs | Enable real-time monitoring of line current for fault detection and loop supervision. |
| SYNC / EAO / EAN | Multi-device synchronization interface | Allows precise phase alignment of ringing and feed across up to 8 SLIC-DCs in one system. |
| CODEC-Interface Pins (e.g., CVR, COS, VS) | Digital control and status interface | 8-bit parallel interface compatible with VINETIC-2CPE and legacy DuSLIC codecs for configuration and monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Balanced ringing SLIC + integrated DC/DC | Eliminates need for external high-voltage DC/DC stages, reducing BOM count by ≥7 components per channel. |
| Patented ring mode | Reduces average power consumption during ringing by >40%, enabling fanless operation in 4-line ATA enclosures. |
| GR-909-compliant ITDF | On-chip diagnostic engine supports automated line test sequences without host CPU intervention. |
| VINETIC-2CPE interface | Enables direct integration with Infineon's voice processor without level-shifting or protocol translation. |
| 8-unit synchronization | Ensures simultaneous ringing onset across all lines-critical for multi-line PABX and hotel phone systems. |
Applications
| Analog Telephone Adapter (ATA) | VoIP Gateway |
|---|---|
Use Scenario: Residential or SOHO device converting analog phones to SIP-based VoIP service. IC Role / Device Role / Timing Role: Primary SLIC providing POTS line interface, battery feed, and ringing generation. Use Value: Integrated -150 V DC/DC and 85 Vrms ringing meet FCC Part 68 and ETSI EN 300 386 requirements with minimal external components. | Use Scenario: Carrier-grade multi-line VoIP gateway supporting up to 8 concurrent POTS lines. IC Role / Device Role / Timing Role: Synchronized SLIC channel managing loop feed, supervision, and ringing under centralized VINETIC-4 control. Use Value: SYNC pin coordination ensures zero-phase-offset ringing across all lines-essential for call waiting and conferencing features. |
| xDSL Customer Premises Equipment | Small Office PABX |
Use Scenario: Integrated xDSL modem/router with embedded telephony port (e.g., ADSL2+ with VoIP). IC Role / Device Role / Timing Role: SLIC-DC co-located with ADM5120SP CPU and VINETIC codec for unified voice/data platform. Use Value: Single 12 V supply powers both data and voice subsystems; patented ring mode cuts total system standby power by 1.8 W per line. | Use Scenario: 4–8 line business PBX supporting analog extensions and centralized ringing. IC Role / Device Role / Timing Role: Multi-SLIC cluster operating in synchronized ring mode for simultaneous bell activation. Use Value: Eliminates need for external ring generators or relays; supports GR-909 line diagnostics per extension. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SLIC-DC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEF4268T | P-DSO-24-8 package; lower pin count; no SYNC pin; max 4-line sync supported. | Targeted at cost-sensitive single- or dual-line ATAs; lacks full 8-unit sync and VINETIC-2CPE interface timing. | Select when board space and channel count are constrained and multi-line synchronization is unnecessary. |
| PEF4267F | No integrated DC/DC; requires external -48 V supply; supports only 60 Vrms ringing. | Suitable for legacy -48 V telecom infrastructure; not viable for single-supply CPE designs. | Choose only where existing -48 V distribution exists and high-voltage DC/DC integration is not required. |
Compared with PEF4268FV1.1, PEF4268T trades synchronization scalability and advanced codec interface for smaller footprint and lower cost, while PEF4267F shifts complexity to external power design and sacrifices ringing amplitude and integrated diagnostics.
Availability
PEF4268FV1.1 is available at Aetrix Electronics and suitable for Analog Telephone Adapters, VoIP Gateways, and xDSL CPE requiring stable component supply, long-lifecycle support, and GR-909-compliant diagnostics.
Supply support for PEF4268FV1.1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive, and communications ICs, with global R&D and manufacturing infrastructure.
The SLIC-DC product line targets cost-optimized, single-supply POTS interface solutions for next-generation VoIP and broadband CPE, emphasizing integration, thermal efficiency, and standards compliance.
FAQ
What is the maximum ringing voltage supported by PEF4268FV1.1?
PEF4268FV1.1 delivers up to 85 Vrms sinusoidal ringing output, compliant with ITU-T G.961 and Telcordia GR-909 specifications. This is achieved using its integrated DC/DC converter and internal oscillator, with external passive components (inductor, capacitor, diode) setting peak amplitude and frequency.
Does PEF4268FV1.1 require an external -48 V supply?
No. PEF4268FV1.1 operates from a single unregulated 9–40 V supply and generates its own -150 V DC feed and ringing voltages internally. No external -48 V rail or high-voltage DC/DC module is needed, reducing system cost and board area.
How does the patented ring mode reduce power consumption?
The patented ring mode dynamically reduces bias current in the output stage during ringing intervals while maintaining waveform integrity. Measured data shows >40% lower average power draw versus conventional SLICs, directly lowering junction temperature and enabling higher channel density in thermally constrained enclosures.
Is PEF4268FV1.1 compatible with VINETIC-2CPE without level-shifting?
Yes. PEF4268FV1.1 implements the updated VINETIC-2CPE interface timing and signal levels, including revised CVR/COS handshake and VS synchronization. No external level shifters or timing adapters are required for direct connection to VINETIC-2CPE or VINETIC-4 voice processors.
PEF4268FV1.1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Applications:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PEF4268FV1.1 FAQ
1.How can I place an order for PEF4268FV1.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEF4268FV1.1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PEF4268FV1.1 reliable?
The price and inventory of PEF4268FV1.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEF4268FV1.1 is usually 5 days.
3.What payment methods are accepted for PEF4268FV1.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEF4268FV1.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEF4268FV1.1?
PEF4268FV1.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEF4268FV1.1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PEF4268FV1.1?
For technical support, including PEF4268FV1.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEF4268FV1.1 requirements.
6.How does Aetrix verify that PEF4268FV1.1 is sourced from the original manufacturer or authorized distributors?
All PEF4268FV1.1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PEF4268FV1.1 meets industry standards.
7.What is the process for return or replacement of PEF4268FV1.1?
All PEF4268FV1.1 units undergo pre-shipment inspection (PSI). If there is an issue with PEF4268FV1.1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PEF4268FV1.1 part is unused and in its original packaging.
Return procedure for PEF4268FV1.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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