SI5338A-B04362-GM

Overview

The SI5338A-B04362-GM is an I2C-programmable quad clock generator from Skyworks Solutions. It utilizes MultiSynth technology to synthesize any frequency on four independent output drivers with zero ppm precision. The device supports a core supply of 1.8, 2.5, or 3.3 V and operates within a temperature range of –40 to +85 °C. Key electrical parameters include a typical phase jitter of 0.7 ps RMS, a maximum input frequency of 710 MHz, and a maximum output frequency of 710 MHz for differential formats. It is housed in a 4 x 4 mm QFN-24 package.

Feature Summary

• MultiSynth technology enables independent, any-frequency synthesis on four differential output drivers with true zero ppm accuracy.
• Low phase jitter performance of 0.7 ps RMS typ, compliant with PCIe Gen 1/2/3/4 Common Clock standards.
• Highly configurable output drivers supporting LVPECL, LVDS, CML, HCSL, CMOS, SSTL, and HSTL formats.
• Independent frequency increment/decrement feature allows glitchless adjustments in 1 ppm steps via I2C/SMBus.

Applications

• Ethernet switch/router
• PCIe Gen1/2/3/4 systems
• Processor and FPGA clocking
• Broadcast video/audio timing
• Telecom line cards

Procurement Notes

Verify the specific factory-programmed configuration associated with the suffix B04362, as this part number indicates custom NVM programming. Confirm that the required output frequencies and signal formats match the programmed settings, as the device is not field-reconfigurable without reprogramming tools. Ensure the I2C interface voltage levels are compatible with the system bus.

Selection Notes

Select this component when low jitter (< 1 ps RMS) and high precision (0 ppm) are critical for multiple asynchronous clock domains. It is suitable for replacing multiple discrete oscillators. Consider the available input reference options, including external crystals (8–30 MHz), CMOS, or differential inputs up to 710 MHz. Verify that the required output voltage levels (1.5, 1.8, 2.5, or 3.3 V) can be supported by the VDDOx pins.

Part Context

The SI5338A-B04362-GM belongs to the Si5338 family of programmable clock generators. The 'A' typically denotes the silicon revision or specific variant within the series, while 'B04362' represents a unique factory-programmed configuration code stored in non-volatile memory. This distinguishes it from generic, user-programmable variants like the SI5338Q-B-GMR.

Replacement Considerations

Direct replacement requires verifying that the new part has the identical factory-programmed configuration (frequencies, formats, and phases). Generic Si5338 models must be reprogrammed using ClockBuilder Pro software to match the original design specifications. Check for pinout compatibility, which remains consistent across the QFN-24 package variants.