Ultra Series Crystal Oscillator Si546 Data Sheet Ultra Low Jitter Dual Any-Frequency XO (80 fs), 0.2 to KEY FEATURES 1500 MHz Available with any two selectable th The Si546 Ultra Series oscillator utilizes Skyworks Solutions advanced 4 frequencies from 200 kHz to 1500 MHz generation DSPLL technology to provide an ultra-low jitter, low phase noise Ultra low jitter: 80 fs Typ RMS clock at two selectable frequencies. The device is factory-programmed to (12 kHz 20 MHz) provide any two selectable frequencies from 0.2 to 1500 MHz with <1 ppb Excellent PSNR and supply noise resolution and maintains exceptionally low jitter for both integer and fractional immunity: 80 dBc Typ frequencies across its operating range. The Si546 offers excellent reliability 7 ppm stability option (40 to 85 C) and frequency stability as well as guaranteed aging performance. On-chip 3.3 V, 2.5 V and 1.8 V V supply DD power supply filtering provides industry-leading power supply noise rejection, operation from the same part number simplifying the task of generating low jitter clocks in noisy systems that use LVPECL, LVDS, CML, HCSL, CMOS, and switched-mode power supplies. Offered in industry-standard footprints, the Dual CMOS output options Si546 has a dramatically simplified supply chain that enables Skyworks to ship 2.5x3.2, 3.2x5, 5x7 mm package options custom frequency samples 1-2 weeks after receipt of order. Unlike a traditional XO, where a different crystal is required for each output frequency, the Si546 Samples available with 1-2 week lead uses one simple crystal and a DSPLL IC-based approach to provide the de- times sired output frequencies. This process also guarantees 100% electrical testing APPLICATIONS of every device. The Si546 is factory-configurable for a wide variety of user specifications, including frequency, output format, and OE pin location/polarity. 100G/200G/400G OTN, coherent optics Specific configurations are factory-programmed at time of shipment, eliminat- ing the long lead times associated with custom oscillators. 10G/25G/40G/100G Ethernet 3G-SDI/12G-SDI/24G-SDI broadcast video Pin Assignments Servers, switches, storage, NICs, search acceleration Test and measurement OE/FS 1 6 VDD Clock and data recovery FS/OE 2 5 CLK- FPGA/ASIC clocking 3 4 CLK+ GND 5 x 7 mm and 3.2 x 5 mm 2.5 x 3.2 mm (Top View) Fixed Frequency Pin Descriptions Frequency Flexible Low Crystal DSPLL Noise Driver 1, 2 Selectable via ordering option DCO OE = Output enable FS = Frequency Select Digital Digital OSC Phase Error Phase Loop Cancellation Detector Filter Flexible 3 GND = Ground Phase Error Formats, 1.8V 3.3V Fractional Operation 4 CLK+ = Clock output Divider NVM 5 CLK- = Complementary clock output. Not used for CMOS. Control Power Supply Regulation 6 VDD = Power supply OE, Frequency Select Built-in Power Supply (Pin Control) Noise Rejection 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 3, 2021 1Si546 Data Sheet Ordering Guide 1. Ordering Guide The Si546 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