Skyworks Solutions Inc. 511FAA-CBAG

Overview

511FAA-CBAG from Skyworks Solutions is a factory-programmed, low-jitter crystal oscillator (XO) delivering 100 MHz output with ±30 ppm total stability (including 10-year aging), 3.3 V CMOS output, and –40 to +85 °C operation in a 5 × 7 mm 4-pin package. It employs DSPLL synthesis for frequency flexibility and integrates an on-chip LDO for supply noise rejection, targeting high-reliability clocking in telecom and datacom infrastructure.

For engineers reviewing the 511FAA-CBAG datasheet, 511FAA-CBAG pinout, 511FAA-CBAG application, or 511FAA-CBAG equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed application use cases, and two rigorously cross-checked alternative oscillators - all specific to the 511FAA-CBAG configuration.

Technical Context

The 511FAA-CBAG implements Skyworks' DSPLL architecture with a fixed internal crystal and digital synthesizer, enabling precise 100 MHz generation without custom crystals. Its CMOS output drives 15 pF loads with 0.45–1.2 ns rise/fall time and 48–52% duty cycle, supporting FPGA/ASIC clock trees requiring stable single-ended timing.

It features an active-high OE pin with internal pull-up, 10 ms startup time, and tristate disable current ≤18 mA. The integrated LDO filters supply noise, yielding 0.25–0.35 ps RMS phase jitter (1.875–20 MHz integration) - critical for SERDES and PCIe Gen3+ reference clocks.

Key Specifications

Pinout & Package

511FAA-CBAG uses a 5 × 7 mm, 4-pin CLCC package (JEDEC MO-202AA). Pin 1 = OE (active-high, internal pull-up), Pin 2 = GND, Pin 3 = CLK (CMOS output), Pin 4 = VDD (3.3 V).

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si510CAA-CBAG, 511FAA-CBAG shares identical electrical specs but reflects Skyworks' Si511-series OE pin assignment; versus ABM8G-100.000MHZ-18-D2Y-T, 511FAA-CBAG delivers superior long-term stability, integrated noise filtering, and guaranteed 10-year aging - essential for infrastructure-class deployments.

Availability

511FAA-CBAG is available at Aetrix Electronics and suitable for telecom line cards, Gigabit Ethernet switches, and FPGA-based video processing systems requiring stable component supply, long-lifecycle support, and guaranteed 10-year aging performance.

Supply support for 511FAA-CBAG 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, mobile, infrastructure, and timing solutions with over 30 years of RF and precision timing expertise.

The Si510/511 family was designed for high-reliability, any-frequency clock generation in datacenter, telecom, and industrial systems - replacing custom quartz XOs with programmable DSPLL-based oscillators that simplify sourcing and improve jitter performance.

FAQ

What is the exact output frequency and stability grade of 511FAA-CBAG?

The 511FAA-CBAG is factory-programmed to deliver exactly 100.000 MHz with ±30 ppm total stability - covering initial accuracy, temperature variation (–40 to +85 °C), supply voltage change, load variation, mechanical stress, and 10-year aging at 40 °C. This grade is designated "C" in Skyworks' ordering nomenclature and is documented in Table 2 of the Si510/511 datasheet Rev. 1.4.

Does 511FAA-CBAG require external configuration or programming after soldering?

No, 511FAA-CBAG is fully factory-configured before shipment. Its 100 MHz frequency, ±30 ppm stability, 3.3 V CMOS output, active-high OE polarity, and operating temperature range are permanently programmed into the device. No external EEPROM, I²C interface, or configuration pins are present - it operates immediately upon power application.

What is the pin 1 function and OE polarity for 511FAA-CBAG?

Pin 1 of 511FAA-CBAG is the Output Enable (OE) terminal, configured for active-high operation with an internal pull-up resistor. When OE = high (≥0.8 × VDD), the CMOS clock output is active; when OE = low (≤0.2 × VDD), the output enters high-impedance state. Runt suppression prevents spurious edges during OE transitions.

Can 511FAA-CBAG replace a standard 100 MHz quartz XO on an existing PCB?

Yes - 511FAA-CBAG uses the industry-standard 5 × 7 mm, 4-pin CLCC package (MO-202AA) with identical footprint and pinout to legacy quartz XOs. Its CMOS output, 3.3 V supply, and 100 MHz frequency match common XO replacements. No PCB changes are required, provided the OE signal is driven high or pulled up externally if unused.

What jitter performance does 511FAA-CBAG achieve at 100 MHz?

At 100 MHz, 511FAA-CBAG achieves 0.25–0.35 ps RMS phase jitter over the 1.875–20 MHz integration bandwidth (brickwall filter), and 0.8–1.0 ps RMS over 12 kHz–20 MHz - measured per Table 7 of the datasheet. This performance meets jitter requirements for PCIe Gen3, 10GBASE-KR, and HD-SDI video timing.