SI5338A-B05146-GMR

Overview

The SI5338A-B05146-GMR is a programmable quad clock generator utilizing MultiSynth technology. It synthesizes any frequency on four independent output drivers with zero ppm precision. The device supports flexible input references, including differential inputs up to 710 MHz and single-ended CMOS inputs up to 200 MHz. Outputs are configurable for LVPECL, LVDS, CML, HCSL, CMOS, SSTL, or HSTL formats. Key electrical parameters include a core supply voltage of 1.8 V, 2.5 V, or 3.3 V, a typical operating current of 45 mA, and a typical phase jitter of 0.7 ps RMS. It operates within a temperature range of –40 °C to +85 °C.

Feature Summary

• Low phase jitter of 0.7 ps RMS typical
• Independent frequency increment/decrement in 1 ppm steps
• Highly configurable spread spectrum (SSC) from 0.5% to 5.0%
• I2C/SMBus compatible interface

Applications

• PCIe Gen 1/2/3/4 common clocking
• Ethernet switch/router timing
• Processor and FPGA clocking
• Broadcast video/audio timing

Procurement Notes

Verify the specific factory configuration code B05146 against the official Skyworks ClockBuilder Pro software or datasheet ordering information. This suffix defines the unique register map, frequencies, and output configurations. Confirm package type and moisture sensitivity level prior to procurement.

Selection Notes

Select this component when independent, glitchless frequency adjustments and precise phase alignment across multiple outputs are required. Ensure the target application utilizes differential inputs for optimal jitter performance below 1 ps RMS. Verify that the required output signal formats (LVPECL, LVDS, etc.) match the available driver configurations.

Part Context

This part belongs to the Si5338 family of I2C-programmable any-frequency, any-output quad clock generators. The 'A' designation typically indicates the base silicon revision or feature set, while the alphanumeric suffix specifies the pre-programmed factory settings. It replaces discrete crystal oscillators in high-performance timing applications.

Replacement Considerations

Direct pin-to-pin replacements within the same family require identical factory programming codes. For generic replacements, verify compatibility of the QFN-24 package, I2C address, and output drive strengths. Use ClockBuilder Pro to generate equivalent configurations if exact factory codes are unavailable.

FAQ

What is the maximum input frequency supported by the Si5338?

The device supports differential inputs up to 710 MHz and single-ended CMOS inputs up to 200 MHz.

Can the output frequencies be adjusted without glitches?

Yes, the independent frequency increment/decrement feature enables glitchless frequency adjustments in 1 ppm steps.

What is the typical phase jitter performance?

The typical phase jitter is 0.7 ps RMS under standard test conditions with low-noise differential inputs.