Si547 Ultra Series Crystal Oscillator Data Sheet Ultra Low Jitter Quad Any-Frequency XO (80 fs), 0.2 to 1500 KEY FEATURES MHz Available with any four selectable th The Si547 Ultra Series oscillator utilizes Skyworks Solutions advanced 4 gen- frequencies from 200 kHz to 1500 MHz eration DSPLL technology to provide an ultra-low jitter, low phase noise clock Ultra low jitter: 80 fs Typ RMS at four selectable frequencies. The device is factory-programmed to provide any (12 kHz 20 MHz) four selectable frequencies from 0.2 to 1500 MHz with <1 ppb resolution and Excellent PSNR and supply noise maintains exceptionally low jitter for both integer and fractional frequencies across immunity: 80 dBc Typ its operating range. The Si547 offers excellent reliability and frequency stability 7 ppm stability option (-40 to 85C) as well as guaranteed aging performance. On-chip power supply filtering provides 3.3 V, 2.5 V and 1.8 V V supply DD industry-leading power supply noise rejection, simplifying the task of generating low operation from the same part number jitter clocks in noisy systems that use switched-mode power supplies. Offered in LVPECL, LVDS, CML, HCSL, CMOS, and industry-standard footprints, the Si547 has a dramatically simplified supply chain Dual CMOS output options that enables Skyworks to ship custom frequency samples 1-2 weeks after receipt of 2.5x3.2, 3.2x5, 5x7 mm package options order. Unlike a traditional XO, where a different crystal is required for each output frequency, the Si547 uses one simple crystal and a DSPLL IC-based approach to Samples available with 1-2 week lead times provide the desired output frequencies. This process also guarantees 100% electri- cal testing of every device. The Si547 is factory-configurable for a wide variety of APPLICATIONS user specifications, including frequency, output format, and OE pin location/polarity. Specific configurations are factory-programmed at time of shipment, eliminating the 100G/200G/400G OTN, coherent optics long lead times associated with custom oscillators. 10G/25G/40G/100G Ethernet Pin Assignments 3G-SDI/12G-SDI/24G-SDI broadcast video FS1 Servers, switches, storage, NICs, search 7 OE/NC 1 6 VDD acceleration Test and measurement NC/OE 2 5 CLK- Clock and data recovery FPGA/ASIC clocking GND 3 4 CLK+ 8 FS0 (Top View) Pin Descriptions Fixed Frequency Frequency Flexible 1, 2 Selectable via ordering option Low Crystal DSPLL Noise OE = Output enable NC = No Connect Driver DCO Digital Digital OSC 3 GND = Ground Phase Error Phase Loop Cancellation Detector Filter Flexible Phase Error 4 CLK+ = Clock output Formats, 1.8V 3.3V Fractional Operation Divider 5 CLK- = Complementary clock output. Not used for CMOS. NVM Control Power Supply Regulation 6 VDD = Power supply 7 FS1 = Frequency Select 1 OE, Frequency Select Built-in Power Supply (Pin Control) Noise Rejection 8 FS0 = Frequency Select 0 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 Rev. 1.3 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 2, 2021 1 Si547 Ultra Series Crystal Oscillator Data Sheet Ordering Guide 1. Ordering Guide The Si547 XO supports a variety of options including frequency, output format, and OE pin location/polarity, as shown in the chart below. Specific device configurations are programmed into the part at time of shipment, and samples are available in 1-2 weeks. Sky- works Solutions provides an online part number configuration utility to simplify this process. Refer to