SI5332CC09423-GM2

Clock Generators, PLLs, Frequency Synthesizers Overview

The Skyworks SI5332CC09423-GM2 is a programmable clock generator in an 8-output, 40-pin QFN package. It utilizes MultiSynth technology to generate integer and fractional frequencies up to 333.33 MHz with 190 fs RMS jitter using an external crystal. The device supports mixed-supply applications through independent output voltage banks (1.5 V, 1.8 V, 2.5 V, or 3.3 V) and user-configurable signal formats including LVDS, LVPECL, HCSL, and LVCMOS. It features I2C configuration, spread spectrum modulation, and operates within a –40 to +85 °C temperature range.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates up to eight differential outputs or sixteen LVCMOS outputs with 0 ppm frequency synthesis error.
• Supports input frequencies from 16–50 MHz (external crystal), 10–250 MHz (differential clock), or 10–170 MHz (LVCMOS).
• Features independent output supply pins for mixed-voltage operation (1.5 V, 1.8 V, 2.5 V, 3.3 V).
• Includes embedded non-volatile memory for default configurations and I2C serial interface for in-system programming.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Servers, storage systems, and search acceleration hardware.
• Ethernet switches and network routers.
• Small cells and mobile backhaul/fronthaul infrastructure.
• Broadcast video and test and measurement equipment.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific NVM code '09423' corresponds to the required frequency plan, as this suffix denotes a factory-programmed configuration generated by ClockBuilder Pro software. Confirm that the GM2 suffix matches the 40-pin QFN package requirement for the target PCB layout. Ensure the design accounts for the specific input source (crystal vs. clock) defined in the custom part number configuration.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the Si5332C variant specifically for integer and fractional synthesis modes with external crystal or clock inputs. The GM2 package provides eight differential outputs, suitable for designs requiring fewer than twelve channels but more than six. Verify that the required output signal formats (LVDS, LVPECL, HCSL, LVCMOS) are supported by the available output banks and voltage supplies in the chosen configuration.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the Si5332 family of any-frequency clock generators. The 'C' designation indicates support for both integer and fractional synthesis modes with external reference inputs. The 'GM2' suffix identifies the 40-pin QFN package supporting up to eight differential outputs. This family replaces multiple discrete oscillators and buffers with a single programmable device.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements require matching the 40-pin QFN footprint and the specific 8-output configuration. Substitutes must support similar jitter performance (<200 fs RMS) and compatible output formats. Note that custom NVM codes are unique to each frequency plan; generic Si5332 devices will not function without reprogramming via ClockBuilder Pro or I2C.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the maximum output frequency for differential signals?

The Si5332 supports differential output frequencies ranging from 5 MHz to 333.33 MHz.

Can the output signal format be changed after manufacturing?

Yes, the signal format (LVDS, LVPECL, HCSL, LVCMOS) can be configured via the I2C serial interface or universal hardware input pins if programmed accordingly.

How is spread spectrum modulation implemented?

Spread spectrum is implemented using MultiSynth technology, allowing center or down spreading from 0.1% to 2.5% at rates between 30 kHz and 33 kHz, controllable via I2C or hardware pins.