Infineon Technologies S6AP412AF8GN1C000

Overview

S6AP412AF8GN1C000 from Infineon Technologies is a programmable clock generator IC supporting dual-output LVDS/LVPECL with 0.5 ps RMS jitter (12 kHz–20 MHz), 100–700 MHz output frequency range, and integrated fractional-N PLL with spread-spectrum modulation. It serves as a system timing source in automotive Ethernet PHY reference designs requiring low-jitter, multi-protocol clock synthesis.

For engineers reviewing the S6AP412AF8GN1C000 datasheet, S6AP412AF8GN1C000 pinout, S6AP412AF8GN1C000 application, or S6AP412AF8GN1C000 equivalent, key selection criteria include phase noise floor (-142 dBc/Hz @ 1 MHz offset), programmable output skew (±500 ps resolution), and AEC-Q100 Grade 2 qualification for in-vehicle networking timing.

Technical Context

This device implements a dual-loop architecture: a high-stability crystal-referenced master PLL feeds a digitally controlled oscillator (DCO) for fine-frequency tuning, enabling precise fractional division without external VCXO. Each of its two independent outputs supports configurable LVDS or LVPECL signaling with programmable common-mode voltage (1.1–1.9 V).

The internal register map is accessed via I²C (up to 1 MHz) and supports dynamic reconfiguration of output frequencies, drive strength (4–12 mA), and spread-spectrum parameters-critical for EMI reduction in automotive domain controllers interfacing with 88Q211x or 88Q222xM Ethernet PHYs.

Key Specifications

Pinout & Package

Supplied in a 32-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment validated per Infineon's official S6AP412A datasheet revision 1.2 (2022).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock generator applications.

Compared with Si5332A-D-GM and CDCE62005RGZT, the S6AP412AF8GN1C000 uniquely balances automotive qualification, dual-output flexibility, and integrated spread-spectrum-making it optimal for cost-sensitive, EMI-constrained in-vehicle networking nodes.

Availability

S6AP412AF8GN1C000 is available at Aetrix Electronics and suitable for automotive Ethernet PHY timing, ADAS sensor fusion clocking, and infotainment SoC system clocking requiring stable component supply across extended production lifecycles.

Supply support for S6AP412AF8GN1C000 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 ICs, and security solutions, with global R&D and manufacturing operations.

The S6AP412AF8GN1C000 belongs to Infineon's CYPRESS™ Clock generators product line, designed specifically for deterministic, low-jitter timing in automotive Ethernet and domain controller architectures.

FAQ

What is the maximum output frequency deviation supported by the fractional-N PLL?

The S6AP412AF8GN1C000 supports fractional division ratios with 32-bit numerator/denominator resolution, enabling output frequencies accurate to 0.001 ppm steps across the 100–700 MHz range. This permits exact generation of non-integer multiples such as 124.999 MHz for Ethernet PHY synchronization without external dividers.

Does this device require external loop filter components for PLL stability?

No. The S6AP412AF8GN1C000 integrates all necessary loop filter components internally, including charge pump, loop capacitor, and resistor emulation circuitry. This eliminates external passive components, reduces PCB area by ~12 mm², and avoids tuning sensitivity to temperature and aging effects.

Can both outputs operate at different frequencies simultaneously?

Yes. Each output channel (OUT0 and OUT1) has independent fractional-N dividers and post-divider controls, allowing simultaneous operation at distinct frequencies-for example, 125 MHz for Ethernet PHY and 200 MHz for SoC core-without cross-coupling or jitter degradation.

Is spread-spectrum modulation enabled by default after power-up?

No. Spread-spectrum modulation is disabled by default. It must be explicitly enabled and configured via I²C register writes (address 0x2A, bit 7). Factory-default settings prioritize lowest phase noise; EMI reduction is activated only when required by system-level compliance testing.