SI5334A-B10521-GMR

Overview

The Skyworks SI5334A-B10521-GMR is a pin-controlled clock generator utilizing MultiSynth technology for independent, any-frequency synthesis on four differential outputs. It supports frequencies up to 350 MHz generally and select frequencies up to 710 MHz with zero ppm frequency error. The device features low phase jitter of 0.7 ps RMS typ and highly configurable output drivers supporting LVPECL, LVDS, HCSL, CMOS, SSTL, or HSTL formats. Operating from a 1.8 V, 2.5 V, or 3.3 V core supply, it accepts external crystals (8–30 MHz) or input clocks (5–710 MHz). Packaged in a 24-lead QFN (4x4 mm), it operates within the -40 to +85 °C industrial temperature range.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with true 0 ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typical value across all outputs.
• Highly-configurable output drivers support up to four differential outputs, eight single-ended outputs, or mixed configurations.
• Flexible input reference options including external crystals (8–30 MHz), CMOS (5–200 MHz), SSTL/HSTL (5–350 MHz), and differential inputs (5–710 MHz).

Applications

• Ethernet switch/router clocking
• PCI Express 2.0/3.0 common clock generation
• Processor and FPGA clocking systems
• Broadcast video/audio timing distribution
• Telecom line cards and MSAN/DSLAM/PON equipment

Procurement Notes

Verify the specific ordering suffix 'B10521' against the manufacturer's current documentation to confirm the exact factory-programmed frequency plan and configuration. As this is a custom part number, availability may be restricted to factory special orders or limited stock. Ensure compatibility with the required input reference type and output voltage levels before procurement.

Selection Notes

Select this component when pin control is preferred over I2C programming for clock generation. Verify that the required output frequencies fall within the 350 MHz general limit or the 710 MHz selective limit. Confirm that the target application supports the available output formats (LVPECL, LVDS, HCSL, etc.) and that the power supply constraints (1.8 V, 2.5 V, or 3.3 V) align with the system design requirements.

Part Context

The SI5334A-B10521-GMR belongs to the Si5334 family of pin-controlled quad clock generators. The 'A' suffix typically denotes specific functional capabilities such as phase adjustment features, while the alphanumeric code defines the unique frequency synthesis parameters programmed into the internal NVM at the factory. This series is designed for high-performance clock distribution in datacom and telecom applications.

Replacement Considerations

Direct replacements must match the 24-QFN package and pinout. Other Si5334 variants (e.g., Si5334C, Si5334K) offer similar form factors but may differ in features like spread spectrum compliance or frequency increment/decrement capabilities. Verify electrical specifications and pin compatibility before substitution.