Skyworks Solutions Inc. 544AAJC001967BBG

Overview

544AAJC001967BBG from Skyworks Solutions is an I²C-programmable ultra-low-jitter crystal oscillator (XO) delivering user-defined frequencies from 0.2 to 1500 MHz with <1 ppb resolution, 150 fs typical RMS phase jitter (12 kHz–20 MHz), ±7 ppm total frequency stability, and LVDS output in a 3.2 × 5 mm CLCC package - deployed for FPGA/ASIC clocking and 100G optical Ethernet timing.

For engineers reviewing the 544AAJC001967BBG datasheet, 544AAJC001967BBG pinout, 544AAJC001967BBG application, or 544AAJC001967BBG equivalent, this page provides verified electrical specs, factory-configured startup behavior, I²C reprogramming capability, PSNR performance (−83 dBc), and dual CMOS/LVDS format compatibility per Skyworks' Si544 Ultra Series™ datasheet Rev. 206612A.

Technical Context

The 544AAJC001967BBG implements Skyworks' 4th-generation DSPLL® architecture with a fixed 55.05 MHz crystal reference, fractional FBDIV (11.32-bit), integer HSDIV (5–2046), and power-of-2 LSDIV (1–32) to synthesize any frequency across its range while maintaining sub-200 fs jitter. Its digital loop filter and on-chip power supply regulation deliver −83 dBc PSNR at 100–1000 kHz ripple frequencies.

Factory-programmed for LVDS output, 1.8/2.5/3.3 V operation, and ±7 ppm total stability (Grade C), the device supports pin-selectable startup frequencies and I²C Fast Mode Plus (1 Mbps) with guaranteed 100 µs settling for small frequency changes (<±950 ppm) and 40 ms for large transitions including internal VCO calibration.

Key Specifications

Pinout & Package

544AAJC001967BBG uses an 8-pin ceramic leadless chip carrier (CLCC) package measuring 3.2 × 5 mm with gull-wing terminations and Au/Ni contact pads (MSL Level 3). Pin functions are validated per Skyworks Si544 datasheet Figure 1 (Top View).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable oscillator applications.

Compared with Si542ACB001967BBG and Si570ACD001967BBG, the 544AAJC001967BBG delivers broader frequency coverage (0.2–1500 MHz vs. ≤800 MHz), tighter stability (±7 ppm vs. ±10/±20 ppm), and integrated startup configuration - making it optimal for next-gen optical and high-performance computing timing.

Availability

544AAJC001967BBG is available at Aetrix Electronics and suitable for 100G optical Ethernet, FPGA clocking, and test equipment requiring stable component supply, short lead times, and guaranteed long-term availability.

Supply support for 544AAJC001967BBG 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

Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and power management ICs.

The Si544 Ultra Series™ is designed for high-speed digital systems demanding ultra-low jitter, field-programmable frequency agility, and robust supply noise immunity - targeting optical networking, AI accelerators, and advanced test instrumentation.

FAQ

What output frequency range does the 544AAJC001967BBG support?

The 544AAJC001967BBG supports a continuous output frequency range from 0.2 MHz to 1500 MHz with <1 ppb resolution. This includes common standards such as 156.25 MHz (10G Ethernet), 312.5 MHz (25G), and 644.53125 MHz (PAM4), all achievable via I²C programming without hardware changes. The device uses Skyworks' DSPLL® architecture with a fixed 55.05 MHz crystal reference to maintain jitter performance across the full band.

What is the phase jitter specification for the 544AAJC001967BBG?

The 544AAJC001967BBG delivers 150 fs typical RMS phase jitter measured over the 12 kHz to 20 MHz offset band, as specified in Skyworks' Si544 datasheet Rev. 206612A. This value is guaranteed for LVDS, LVPECL, and HCSL outputs and enables compliance with OC-192, OTU-4, and IEEE 802.3bs jitter masks. Measured phase noise reaches −132 dBc/Hz at 10 kHz offset for 200 MHz LVDS output.

Does the 544AAJC001967BBG support multiple supply voltages?

Yes, the 544AAJC001967BBG operates from a single supply voltage of 1.8 V, 2.5 V, or 3.3 V ±5%, with identical performance across all three rails. This multi-voltage capability is built into the same part number and eliminates the need for separate SKUs or voltage-level translation in mixed-voltage systems - confirmed by electrical specifications in Table 2.1 of the official datasheet.

How is the 544AAJC001967BBG configured for startup frequency?

The 544AAJC001967BBG is factory-programmed with up to four user-defined startup frequencies selectable via pins OE/FS0/FS1. For 544AAJC001967BBG specifically, the ordering code "J" indicates quad-frequency select capability with active-high polarity on Pin 2. Startup behavior is non-volatile and persists through power cycles - no I²C initialization is required to begin operation at the designated frequency.

What package type and dimensions does the 544AAJC001967BBG use?

The 544AAJC001967BBG uses a 3.2 × 5 mm ceramic leadless chip carrier (CLCC) package with 8 gull-wing terminals and Au/Ni contact metallization. It complies with MSL Level 3 per JEDEC J-STD-020 and features a thermal resistance of ΘJA = 55 °C/W in still air. This package is optimized for high-frequency signal integrity and thermal dissipation in dense PCB layouts.