Si5508A

18-Output, Low Phase Noise Jitter Attenuating Clock for 5G/eCPRI eCPRI

The Si5508A Wireless Jitter Attenuator Clock utilizes fifth-generation DSPLL® and MultiSynth™ technologies is optimized for enhanced Common Public Radio Interface (eCPRI) and CPRI wireless applications which demand the highest level of integration, low phase noise performance and power consumption. This highly integrated solution requires no external loop filter components and provides superior performance that is highly immune to external board disturbances such as power supply noise.

The Si5508A DSPLL bandwidth is digitally programmable to values from 10Hz to 4kHz. With phase noise of –145 dBc/Hz at 800 kHz offset for a 491.52 MHz carrier frequency and phase jitter as low as 47 fs RMS, the Si5508A accepts 4/6 inputs clock ranging from 8kHz to 1000 MHz differential and 8kHz to 250MHz for CMOS. Si5508A generates up to 18 clock outputs supporting JESD204B/C clock generation that are configurable in any combination of DCLK, SYSREF or as other system clocks. Each output supports delay/skew adjust and frequencies ranging from PP2S/PPS, 8kHz up to 3200MHz.

Data Shorts Eval Kit

Support ECAD Model

Specifications

DescriptionLow PN JA Clock for 5G/eCPRI with JESD204B/C

Package TypeQFN72

Package Size (mm)10x10

4G/LTE Wireless Clockstrue

5G Clockstrue

56G SerDesfalse

Automotive Gradefalse

Clock Generatorsfalse

Clock outputs18

ControlSPI

DSPLLs1

Input Frequency Min (MHz)0.008

Input Frequency Max (MHz)1000

Intel x86 Clocksfalse

Jitter Attenuating Clockstrue

Jitter Recommended Range (fs)<=100

Line Impedance Match0

Loop Bandwidth Max (MHz)0.004

Loop Bandwidth Min (MHz)0.000000001

Number of Outputs18

Output Format CategoriesDifferential; Single-Ended

Ouput Format(s)LVDS, S-LVDS, AC coupled LVPECL, LVCMOS, HCSL, CML

Output Frequency Domains1

Output Frequency Min (MHz)0.0000005

Output Frequency Max (MHz)3200

PCI Expressfalse

Phase Jitter (ps RMS)0.047

Real Time Clockfalse

Reference Inputs6

Reference TypeExternal

Spread Spectrumfalse

Standards ComplianceNA

Synchronous Ethernet/1588false

Temperature Range Min (°C)-40

Temperature Range Max (°C)95

VDD (V)1.8; 3.3

VDDO (V)1.8; 2.5; 3.3

XTAL Inputtrue

Xtal Input Frequency54

OPNSi5508A

Product Documents

Quality and Packaging

Look up product's green / pb-free status and information on RoHS, REACH, Halogen Free, and PFIS.

Certificate of Conformance

Evaluation Kits

SI55xx-A-EVB

Si5518/12 NetSync™ Network Synchronizer Clocks and Si5510/08 Wireless Jitter Attenuator Clocks Evaluation Kit

The Si55xx-A-EVBs make it easy to move from ClockBuilder Pro device configuration to hands-on performance evaluation. Si55xx-A-EVB can be used to evaluate any Si5518/12/10/08 clocks. MSRP $850.00

cbprog-dongle

ClockBuilder Pro Field Programmer

When used with ClockBuilder Pro software, the ClockBuilder Pro Field Programmer makes it simple for systems designers to develop, program, and debug any Si5332/8, Si5350/1/6/7, Si534x/6x/8x/9x, Si540x, Si55xx, SKY6210x, SKY6310x, SKY6900x, and SKY6910x part family clock devices “in-system,” or in one of the convenient QFN or LGA sockets. The field programmer supports I2C or SPI interfaces to the host system, and SPI to the field programmer's QFN or LGA socket boards.

MSRP $149.00

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