Skyworks Solutions Inc. 541AAA001015BAG

Overview

541AAA001015BAG from Skyworks Solutions is an ultra-low-jitter dual-output crystal oscillator (XO) based on 4th-generation DSPLL® technology, delivering two factory-programmed frequencies between 0.2–1500 MHz with <1 ppb resolution and 125 fs typical RMS phase jitter (12 kHz–20 MHz). It supports LVPECL output, operates from 3.3 V supply, and is housed in a 3.2×5 mm CLCC package. Used for high-speed serial clocking in 100G/400G optical Ethernet and FPGA/ASIC timing.

For engineers reviewing the 541AAA001015BAG datasheet, 541AAA001015BAG pinout, 541AAA001015BAG application, or 541AAA001015BAG equivalent, this page provides verified technical context, validated pin functions, confirmed dual-frequency operation specs, real-world PSNR performance (–83 dBc), and precise package-level thermal parameters (ΘJA = 55 °C/W).

Technical Context

The 541AAA001015BAG implements a digital fractional-N DSPLL architecture with integrated DCO, digital phase detector, and loop filter - enabling simultaneous, independent synthesis of two user-defined frequencies without external components. Its on-chip power regulation rejects supply noise up to –83 dBc at 1 MHz ripple, critical for systems using switched-mode power supplies.

It features pin-controlled frequency select (FS) and output enable (OE) functions on Pins 2 and 1 respectively, with internal 50 kΩ pull-up/pull-down networks. The device is factory-programmed with non-volatile memory (NVM), ensuring 100% electrical test coverage and eliminating post-manufacture configuration.

Key Specifications

Pinout & Package

541AAA001015BAG uses a 6-pin 3.2×5 mm CLCC package with gull-wing leads. Package meets MIL-STD-883 mechanical reliability standards and has MSL Level 3 moisture sensitivity rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-frequency XO applications.

Compared with Si540ACA001015BAG, 541AAA001015BAG adds frequency agility and clock domain isolation at no cost in jitter or power; versus MAX2682AETM+, it delivers 2× lower jitter, 100% tested programmability, and eliminates analog tuning complexity - making it optimal for next-gen coherent and AI-accelerator timing.

Availability

541AAA001015BAG is available at Aetrix Electronics and suitable for 100G/400G optical networking, FPGA-based AI accelerators, and high-end test equipment requiring stable component supply, rapid custom-frequency fulfillment, and guaranteed long-term lifecycle support.

Supply support for 541AAA001015BAG 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 leader in analog and mixed-signal semiconductors, specializing in RF, timing, and connectivity solutions for infrastructure, automotive, and industrial markets.

The Si541 belongs to Skyworks' Ultra Series™ timing portfolio, engineered specifically for high-speed serial data links demanding sub-150 fs jitter, multi-frequency flexibility, and robust supply noise immunity in dense, thermally constrained PCB layouts.

FAQ

What output format and supply voltage does 541AAA001015BAG support?

541AAA001015BAG is configured for LVPECL output and operates from a 3.3 V ±5% supply. Though the Si541 family supports 1.8 V and 2.5 V operation via the same base part number, the specific 541AAA001015BAG variant is programmed and tested for 3.3 V use. Its LVPECL driver delivers 1.1–1.9 VPP differential swing into 50 Ω loads referenced to VDD – 2.0 V.

How are the two frequencies selected on 541AAA001015BAG?

541AAA001015BAG uses Pin 2 (FS) to select between its two factory-programmed frequencies: FS = high selects Frequency 1, FS = low selects Frequency 2. The FS pin includes an internal 50 kΩ pull-up to VDD, so the device defaults to Frequency 1 at power-up unless actively driven low. Settling occurs within 10 ms after FS transition.

What is the phase jitter specification for 541AAA001015BAG and under what conditions is it guaranteed?

541AAA001015BAG delivers 125 fs typical RMS phase jitter (12 kHz–20 MHz) for LVPECL output at frequencies ≥100 MHz in the 3.2×5 mm package. This value is characterized and guaranteed across –40 to +85 °C ambient, with 3.3 V supply and proper termination. Jitter includes all spurs and is measured using Agilent E5052 with differential-to-single-ended conversion.

Does 541AAA001015BAG require external configuration or programming after soldering?

No - 541AAA001015BAG is fully factory-programmed with non-volatile memory (NVM) during final test. All parameters - including both output frequencies, LVPECL format, OE polarity, FS behavior, and stability grade - are permanently stored and electrically verified before shipment. No external programming interface or host controller is needed.

What package type and thermal performance does 541AAA001015BAG have?

541AAA001015BAG uses a 6-pin 3.2×5 mm CLCC package with gull-wing leads. Its thermal resistance is ΘJA = 55 °C/W (still air, 85 °C ambient), ΨJB = 20 °C/W, and ΨJT = 20 °C/W. These values are validated per MIL-STD-883 methods and assume a 4-layer, 1.6 mm PCB per IPC-7351 land pattern guidelines.