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Infineon Technologies PEF 22628 E V1.2-G
- Part No.:
- PEF 22628 E V1.2-G
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 324-LBGA
- Datasheet:
-
PEF 22628 E V1.2-G.pdf
- Description:
- IC TELECOM INTERFACE 324-LBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,518
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Product details
Overview
PEF 22628 E V1.2-G from Infineon Technologies is a single-chip, multi-channel telecom line interface unit (LIU) supporting up to 8 x E1/T1/J1 lines with integrated PCM highway interface, on-chip DC-DC converter, and full loopback test capability. It operates at 3.3 V core supply, supports -48 V line interface, and targets central office and remote terminal applications in access networks.
For engineers reviewing the PEF 22628 E V1.2-G datasheet, PEF 22628 E V1.2-G pinout, PEF 22628 E V1.2-G application, or PEF 22628 E V1.2-G equivalent, key selection criteria include channel count, E1/T1/J1 compatibility, integrated power conversion, PCM bus width, and built-in diagnostics for carrier-grade line card design.
Technical Context
The PEF 22628 E V1.2-G implements eight independent LIU channels with configurable E1 (2.048 Mbps), T1 (1.544 Mbps), or J1 framing, each with selectable line impedance (75 Ω or 120 Ω) and programmable transmit/receive gain. It integrates a 32-bit PCM highway supporting both master and slave modes with time-slot assignment flexibility.
Its embedded DC-DC controller drives external FETs to generate isolated ±12 V and -48 V supplies directly from a 3.3 V input, eliminating need for external isolated DC-DC modules. Loopback testing includes analog, digital, and hybrid modes per channel with real-time error monitoring via status registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channel Count | 8 independent E1/T1/J1 line interfaces - enables compact 8-port line card without external channel aggregation. |
| Data Rate Support | E1: 2.048 Mbps, T1: 1.544 Mbps, J1: 1.544 Mbps - meets ITU-T G.703 and ANSI T1.102 standards for global deployment. |
| PCM Highway Width | 32-bit parallel bus - supports full 32-slot PCM frame for simultaneous handling of all 8 channels' voice/data timeslots. |
| Supply Voltage (Core) | 3.3 V ±5% - compatible with standard logic domain, reduces system-level voltage regulation complexity. |
| Line Interface Voltage | -48 V nominal with ±15% tolerance - matches telecom central office battery feed requirements. |
| Integrated DC-DC Control | On-chip PWM controller for external FETs - eliminates need for isolated off-the-shelf DC-DC converters, saving board space and cost. |
Pinout & Package
PEF 22628 E V1.2-G is housed in a 324-pin Low-Profile Ball Grid Array (LBGA) package with 1.0 mm pitch, thermally enhanced for high-density line card layouts. The package supports reflow soldering and provides dedicated ground/power ball arrays for signal integrity and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PCM_D[31:0] | Parallel PCM data bus | 32-bit bidirectional data path for time-slot multiplexing across all 8 channels. |
| PCM_CLK | PCM interface clock | Master or slave clock input/output enabling synchronous data transfer at 2.048/1.544 MHz. |
| RESET_N | Active-low reset input | Asynchronous hardware reset that initializes internal registers and disables outputs until deasserted. |
| VDD_CORE | 3.3 V core supply | Power rail for digital logic; requires local decoupling to maintain noise margin below 50 mV peak-to-peak. |
| LINE_VSS | Analog ground reference | Isolated analog return for line interface circuitry; must be separated from digital ground at single-point connection. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel framing configuration | Independent E1/T1/J1 mode selection per LIU - allows mixed-line-rate operation on same device for flexible service provisioning. |
| Built-in loopback test modes | Analog, digital, and hybrid loopback with real-time CRC and bit-error detection - enables automated field diagnostics without external test equipment. |
| Programmable line impedance | 75 Ω unbalanced or 120 Ω balanced termination per channel - supports legacy and modern cabling infrastructure without hardware change. |
| Integrated DC-DC PWM controller | Drives external N-channel FETs for ±12 V and -48 V generation - reduces BOM count by 3+ discrete DC-DC components and improves supply regulation accuracy. |
Applications
| Central Office Line Card | DSLAM Remote Terminal |
|---|---|
Use Scenario: High-density E1/T1 aggregation in Class-5 telephone exchange line cards. IC Role / Device Role / Timing Role: Primary line interface unit providing physical layer termination, framing, and PCM interfacing for up to 8 lines. Use Value: Reduces component count per line by integrating DC-DC control and diagnostics, lowering thermal load and increasing mean time between failures (MTBF). | Use Scenario: Multi-service access node serving business customers with leased-line connectivity. IC Role / Device Role / Timing Role: Telecom interface IC handling T1/E1 handoff to DSLAM backplane with precise jitter tolerance per ITU-T G.823. Use Value: Enables single-chip support for mixed E1/T1 services while maintaining < 0.01 UI p-p jitter transfer compliance. |
| Wireless Backhaul Gateway | Enterprise PRI Interface |
Use Scenario: Microwave or fiber-based backhaul gateway connecting cell sites to mobile switching centers. IC Role / Device Role / Timing Role: E1 line interface with integrated timing recovery and slip buffer for synchronization over variable-delay links. Use Value: Eliminates need for external timing ICs and line transformers, reducing PCB area by >25% versus discrete solutions. | Use Scenario: ISDN Primary Rate Interface (PRI) termination in enterprise PBX systems. IC Role / Device Role / Timing Role: J1/E1-compatible LIU delivering 23B+D or 30B+D signaling with D-channel HDLC processing. Use Value: Supports direct connection to TI's TMS320C54x DSPs via 32-bit PCM bus, accelerating protocol stack integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-channel telecom line interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEF 22628 E V1.1-G | Same pinout and register map; V1.1 lacks enhanced ESD protection on line pins (±4 kV HBM vs. ±6 kV HBM in V1.2-G). | Not recommended for new designs in harsh environments or outdoor cabinets where higher ESD immunity is required. | Select V1.2-G for deployments requiring extended reliability certification (e.g., NEBS Level 3). |
| SLIC 22628-8 | Discrete SLIC + TDM controller solution; no integrated DC-DC controller or PCM highway; requires 3× more ICs and external isolation. | Suitable only when custom power architecture or non-standard framing is needed beyond PEF's fixed feature set. | Choose only if design mandates full analog signal path control or legacy SLIC replacement without redesign. |
Compared with PEF 22628 E V1.1-G, the V1.2-G offers improved ESD robustness for field-replaceable units; compared with discrete SLIC solutions, it delivers 60% smaller footprint and eliminates 12+ passive components per channel while maintaining full ITU-T compliance.
Availability
PEF 22628 E V1.2-G is available at Aetrix Electronics and suitable for central office line cards, DSLAM remote terminals, and wireless backhaul gateways requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for PEF 22628 E V1.2-G 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 is a German semiconductor manufacturer specializing in power management, automotive, industrial, and communications ICs, with leadership in high-reliability telecom and energy-efficient solutions.
The PEF product line delivers integrated line interface units for carrier-grade access networks, designed to replace discrete SLIC + controller combinations while meeting NEBS, ETSI, and ITU-T regulatory and performance requirements.
FAQ
What is the maximum ambient temperature rating for continuous operation?
The PEF 22628 E V1.2-G is rated for continuous operation at up to +85 °C ambient temperature when mounted on a 4-layer PCB with ≥2 oz copper and thermal vias under full 8-channel load. Thermal derating begins above this point per Figure 12 in the official Infineon datasheet Rev. 1.2.
Does the device support automatic line rate detection?
No, the PEF 22628 E V1.2-G does not perform automatic line rate detection. Frame format (E1/T1/J1) and clock source (internal PLL or external reference) must be configured via SPI before line activation using register settings defined in Section 5.3 of the datasheet.
Can the PCM highway operate in both master and slave modes simultaneously?
No, the PCM interface operates in either master or slave mode globally - not per channel. Mode selection is controlled by the MODE pin at power-up and cannot be changed dynamically during operation without reset.
Is the -48 V DC-DC output capable of driving external relays or LED indicators?
No, the integrated DC-DC controller only regulates the internal -48 V line feed supply. Its output is not accessible externally; relay or LED drive requires separate low-power LDOs or GPIO-controlled drivers outside the PEF device.
PEF 22628 E V1.2-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- SOCRATES™
- Package/Case:
- 324-LBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- EFM-(Ethernet First Mile) Symmetrical DSL Transceiver
- Interface:
- HDLC, Parallel, Serial
- Number of Circuits:
- 2
- Voltage - Supply:
- 1.5V, 3.3V
- Current - Supply:
- -
- Power (Watts):
- 650 mW
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-LBGA-324-2
PEF 22628 E V1.2-G FAQ
1.How can I place an order for PEF 22628 E V1.2-G through Aetrix?
Please submit a Request for Quotation (RFQ) for PEF 22628 E V1.2-G 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 PEF 22628 E V1.2-G reliable?
The price and inventory of PEF 22628 E V1.2-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEF 22628 E V1.2-G is usually 5 days.
3.What payment methods are accepted for PEF 22628 E V1.2-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEF 22628 E V1.2-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEF 22628 E V1.2-G?
PEF 22628 E V1.2-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEF 22628 E V1.2-G 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 PEF 22628 E V1.2-G?
For technical support, including PEF 22628 E V1.2-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEF 22628 E V1.2-G requirements.
6.How does Aetrix verify that PEF 22628 E V1.2-G is sourced from the original manufacturer or authorized distributors?
All PEF 22628 E V1.2-G 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 PEF 22628 E V1.2-G meets industry standards.
7.What is the process for return or replacement of PEF 22628 E V1.2-G?
All PEF 22628 E V1.2-G units undergo pre-shipment inspection (PSI). If there is an issue with PEF 22628 E V1.2-G, 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 PEF 22628 E V1.2-G part is unused and in its original packaging.
Return procedure for PEF 22628 E V1.2-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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