Ratio - Input:Output:	4:4
Base Part Number:	SI5338
Supplier Device Package:	24-QFN (4x4)
Package / Case:	24-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	1.71 V ~ 3.63 V
Frequency - Max:	710MHz
Differential - Input:Output:	Yes/Yes
Series:	MultiSynth™
Number of Circuits:	1
Output:	HCSL, HSTL, LVCMOS, LVDS, LVPECL, SSTL
Input:	CML, CMOS, HCSL, HSCL, HSTL, LVDS, LVPECL, SSTL, Crystal
Main Purpose:	Ethernet, Fibre Channel, PCI Express (PCIe), Telecom
PLL:	Yes
Part Status:	Obsolete
Packaging:	Tray

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Introduction

The SI5338N-A-GM is a silicon frequency synthesizer that offers wide frequency coverage on a single chip. This chip can generate frequencies from 16kHz to 8GHz with 8-to-1 fractional-N PLL or 13-to-1 integer-N PLL. It also features a low jitter output for synchronization and timing applications. This chip is used in applications such as cellular, WiMAX, Ethernet, GNSS, wireless, and telecom systems.

Clock/Timing - Application Specific

The SI5338N-A-GM is especially well suited for low-frequency applications such as clocks, timers and synthesizers. The chip has a low-jitter, sinusoidal output and allows a wide range of frequencies to be generated. It also features a built-in programmable voltage-controlled oscillator (VCO) which can be programmed to generate specific frequency profiles. The chip also allows for precise frequency adjustment, making it ideal for use in clock/timer applications.

Working Principle

The working principle of the SI5338N-A-GM is based on a fractional-N phase-locked loop (PLL) architecture. The output frequency is determined by the input reference frequency and the output divider settings within the chip. This chip allows for precise frequency and phase synchronization for both uplink and downlink applications. The chip uses a feedback loop to compare the reference frequency to the output frequency. This comparison is done using a phase detector. The phase detector compares the phase of the reference frequency to the phase of the output frequency, and it outputs an error signal based on the difference. The error signal is then used to adjust the output frequency, either increasing or decreasing it until it matches the reference frequency. The chip can also be used for frequency hopping applications, where the output frequency may need to be changed quickly and precisely. The chip\'s fast frequency settling time and low jitter output make it a great choice for this type of application.

Conclusion

The SI5338N-A-GM is a versatile, low-jitter frequency synthesizer with wide frequency coverage suitable for clocks and timing applications. Its built-in programmable voltage-controlled oscillator (VCO) and precise frequency adjustment capabilities make it a great choice for frequency hopping applications and other low-frequency applications such as clocks, timers and synthesizers.

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