Infineon Technologies PEB4265VV1.2

Overview

PEB4265VV1.2 from Infineon Technologies is a dual-channel TSLIC (Telecom Subscriber Line Interface Circuit) optimized for VoIP, VoDSL, and cable modem POTS line interface applications. It delivers 32 mA DC feed current, supports balanced/unbalanced ringing up to 170 Vrms, integrates line echo cancellation (8 ms), DTMF detection, CLIP generation, and operates from a 3.3 V supply with lifeline power management.

For engineers reviewing the PEB4265VV1.2 datasheet, PEB4265VV1.2 pinout, PEB4265VV1.2 application, or PEB4265VV1.2 equivalent, this device serves as a programmable, low-power SLIC solution for CPE voice gateways requiring remote line testing, integrated ring generation, and V.90 modem compatibility in compact 48-pin VQFN packaging.

Technical Context

The PEB4265VV1.2 implements a fully programmable dual-channel SLIC architecture with integrated analog front-end, digital control interface, and embedded line testing circuitry. It supports PCM/IOM-2 serial interface and features software-configurable AC impedance, loop length compensation, and longitudinal balance tuning.

Its internal ring generator eliminates external relays and transformers, while the on-chip DTMF receiver and tone generator operate without external filters. The device uses 3.3 V supply rails for both digital and analog sections, enabling full-system 3.3 V design with lifeline mode maintaining ≥1 channel during power loss.

Key Specifications

Pinout & Package

PEB4265VV1.2 is housed in a P-VQFN-48 (7 mm × 7 mm, 0.5 mm pitch) thermally enhanced package with exposed thermal pad. Pin assignment follows Infineon's TSLIC-S family layout, supporting dual-line differential signaling and shared digital control.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel SLIC applications.

Compared with PEB4265T v1.1, PEB4265VV1.2 reduces component count by eliminating external ringing hardware and adds autonomous line diagnostics; versus SLICOFI-2S2, it trades echo tail depth and codec integration for lower power, smaller size, and CPE-optimized feature set.

Availability

PEB4265VV1.2 is available at Aetrix Electronics and suitable for voice-over-packet gateways, cable modem telephony adapters, VoDSL terminal units, and small-office IP PBX systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for PEB4265VV1.2 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 core expertise in high-voltage analog and mixed-signal design.

The PEB4265VV1.2 belongs to Infineon's DuSLIC family-designed specifically for cost-sensitive, space-constrained Customer Premise Equipment requiring integrated telephony functionality, lifeline reliability, and global regulatory compliance.

FAQ

Does PEB4265VV1.2 support lifeline operation during AC power failure?

Yes. The device implements hardware-monitored lifeline mode that automatically disables one channel and reduces analog bias to maintain ≥32 mA feed on the remaining line using only local 3.3 V backup supply. This satisfies FCC Part 68 and ETSI EN 300 386 requirements for emergency calling under brownout conditions.

What interface protocols does PEB4265VV1.2 support for host processor communication?

It supports two independent control interfaces: I²C (SCL/SDA) for configuration of ringing parameters, DTMF thresholds, and line test modes; and PCM/IOM-2 (CLK/FS/DI/DO) for real-time voice sample transfer at 8 kHz sampling rate with 8-bit linear or A-law encoding.

Can PEB4265VV1.2 generate and detect FSK-based caller ID (CLIP)?

Yes. The integrated DTMF/FSK engine supports both generation and detection of Bellcore/ETSI-compliant CLIP signals using programmable tone frequencies (1200/2200 Hz), mark/space durations, and amplitude levels-all configurable via I²C without external components.

Is thermal management supported through dedicated pins or registers?

Yes. The THERM pin provides an analog voltage (0.5 V to 1.5 V) proportional to junction temperature, usable for external monitoring or feedback to host MCU. Additionally, internal thermal shutdown activates at 150°C, forcing safe state transition and flagging via I²C status register bit.