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 Silicon Laboratories 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 Silicon Labs 2.5x3.2, 3.2x5, 5x7 mm package options to ship custom frequency samples 1-2 weeks after receipt of order. Unlike a traditional XO, where a different crystal is required for each output frequency, Samples available with 1-2 week lead the Si546 uses one simple crystal and a DSPLL IC-based approach to provide times the desired output frequencies. This process also guarantees 100% electrical APPLICATIONS testing of every device. The Si546 is factory-configurable for a wide variety of user specifications, including frequency, output format, and OE pin location/po- 100G/200G/400G OTN, coherent optics larity. Specific configurations are factory-programmed at time of shipment, eliminating 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 August 23, 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. Silicon Laboratories provides an online part number configuration utility to simplify this process. Refer to www.silabs.com/oscillators to access this tool and for further ordering instructions. 2 XO Series Description Temp Stability Total Stability Package Temperature Grade 546 Dual Frequency A 20 ppm 50 ppm A 5x7 mm G -40 to 85 C B 10 ppm 25 ppm B 3.2x5 mm C 7 ppm 20 ppm C 2.5x3.2 mm 546 A A A - - - - - - A C G R Device Revision OE FS Order OE Polarity Signal Format VDD Range Pin Pin Option A Pin 1 Active High Pin 2 Reel LVPECL 2.5, 3.3 V A B Pin 1 Active Low Pin 2 R Tape and Reel LVDS 1.8, 2.5, 3.3 V B C Pin 2 Active High Pin 1 <Blank> Coil Tape CMOS 1.8, 2.5, 3.3 V C D Pin 2 Active Low Pin 1 CML 1.8, 2.5, 3.3 V D 3 HCSL 1.8, 2.5, 3.3 V E Frequency Code Description Dual CMOS 1.8, 2.5, 3.3 V F (In-Phase) Two unique frequencies can be specified within the supported range of the selected Dual CMOS 1.8, 2.5, 3.3 V G signal format. Either frequency can be (Complementary) xxxxxx assigned to FS=0 or FS=1. A six digit numeric code will be assigned for the specific HCSL-Fast 1.8, 2.5, 3.3 V H combination of frequencies. 1 Custom 1.8, 2.5, 3.3 V X Notes: 1. Contact Silicon Labs for non-standard configurations. 2. Total stability includes temp stability, initial accuracy, load pulling, VDD variation, and 20 year aging at 70 C. 3. Create custom part numbers at www.silabs.com/oscillators. 1.1 Technical Support Frequently Asked Questions (FAQ) www.silabs.com/Si546-FAQ Oscillator Phase Noise Lookup Utility www.silabs.com/oscillator-phase-noise-lookup Quality and Reliability www.silabs.com/quality Development Kits www.silabs.com/oscillator-tools Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 Rev. 1.3 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice August 23, 2021 2