{"id":2484,"date":"2026-05-21T01:19:51","date_gmt":"2026-05-21T01:19:51","guid":{"rendered":"https:\/\/materialparts.com\/si5351a-b-gt\/"},"modified":"2026-05-21T01:19:51","modified_gmt":"2026-05-21T01:19:51","slug":"si5351a-b-gt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/si5351a-b-gt\/","title":{"rendered":"SI5351A-B-GT"},"content":{"rendered":"

Productos<\/h2>\n

The SI5351A-B-GT from Silicon Labs (Skyworks) is an I2C-programmable any-frequency CMOS clock generator producing up to 3 LVCMOS outputs from 2.5kHz to 200MHz. It features dual fractional-N PLLs, MultiSynth dividers, 0ppm frequency error, and 70ps jitter in a 10-MSOP package.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Fabricante<\/td>\nSilicon Labs \/ Skyworks<\/td>\n<\/tr>\n
Tipo<\/td>\nProgrammable Clock Generator<\/td>\n<\/tr>\n
Number of Outputs<\/td>\n3 (LVCMOS)<\/td>\n<\/tr>\n
Output Frequency Range<\/td>\n2.5kHz to 200MHz<\/td>\n<\/tr>\n
Input Frequency<\/td>\n25MHz or 27MHz crystal<\/td>\n<\/tr>\n
Number of PLLs<\/td>\n2 (fractional-N)<\/td>\n<\/tr>\n
Jitter (Period)<\/td>\n70ps typ peak-to-peak<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n1.71V to 3.6V (core), 1.8-3.3V (output)<\/td>\n<\/tr>\n
Supply Current<\/td>\n22mA typical<\/td>\n<\/tr>\n
Interface<\/td>\nI2C<\/td>\n<\/tr>\n
Paquete<\/td>\n10-MSOP (3.0 x 3.0mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Generates any frequency from 2.5kHz to 200MHz on each output<\/li>\n
  • 0ppm frequency error at each output<\/li>\n
  • Dual fractional-N PLLs with MultiSynth dividers<\/li>\n
  • I2C user-definable configuration<\/li>\n
  • Low period jitter: <70ps typ<\/li>\n
  • Operates from low-cost 25MHz or 27MHz crystal<\/li>\n
  • Separate output voltage supply pins (1.8V, 2.5V, 3.3V)<\/li>\n
  • Configurable spread spectrum<\/li>\n
  • Programmable rise\/fall time control<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Replacing crystals, crystal oscillators, and PLLs<\/li>\n
    • RF and radio transceiver clocking<\/li>\n
    • FPGA and CPU clock generation<\/li>\n
    • Consumer electronics and telecom<\/li>\n
    • Amateur radio and SDR<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SI5351A-B-GT from Silicon Labs (Skyworks) is an I2C-programmable any-frequency CMOS clock generator producing up to 3 LVCMOS outputs from 2.5kHz to 200MHz. It features dual fractional-N PLLs, MultiSynth dividers, 0ppm frequency error, and 70ps jitter in a 10-MSOP package. Key Specifications Manufacturer Silicon Labs \/ Skyworks Type Programmable Clock Generator Number of […]<\/p>\n","protected":false},"author":2,"featured_media":2769,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[],"chip_brand":[184],"class_list":["post-2484","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-integrated-circuits-ics","chip_brand-silabs"],"acf":{"brief_explanation":"I2C clock generator, 3-output LVCMOS, 2.5kHz-200MHz, 0ppm error, 70ps jitter, 10-MSOP","date_code":"","package_case":"10-MSOP (3.0 x 3.0 x 0.9mm)","in_stock":4985,"datasheet":"https:\/\/www.skyworksinc.com\/en\/Products\/Timing\/CMOS-Clock-Generators\/Si5351A-B-GT","price":"$1.11 @ 1ku","product_introduction":"The Silicon Labs SI5351A-B-GT is a versatile I2C-programmable clock generator ideally suited for replacing crystals, crystal oscillators, VCXOs, PLLs, and fanout buffers. Based on a PLL + high-resolution MultiSynth fractional divider architecture, the device can generate any frequency up to 200MHz on each of its three outputs with 0ppm error. A single low-cost 25MHz or 27MHz crystal serves as the reference. The dual fractional-N PLLs and MultiSynth dividers allow generation of non-integer-related clock frequencies, enabling one device to synthesize clocks for multiple domains. With 70ps typical period jitter and configurable rise\/fall times, the SI5351A delivers clean, low-noise clock signals.","working_principle":"The SI5351A-B-GT operates through a two-stage synthesis architecture: 1) Input Stage: An external 25MHz or 27MHz crystal drives the internal oscillator. Internal load capacitors (0\/6\/8\/10pF selectable) eliminate the need for external components. 2) First Synthesis Stage: Two fractional-N PLLs (PLLA and PLLB) multiply the crystal reference to a high-frequency intermediate clock (600-900MHz). The fractional-N architecture allows non-integer multiplication ratios for precise frequency generation. 3) Second Synthesis Stage: Each output has a dedicated MultiSynth fractional divider that divides the PLL output to the desired frequency. The high-resolution fractional dividers enable 0ppm frequency error. 4) Output Stage: Additional integer R dividers allow frequencies as low as 2.5kHz. Crosspoint switches route any PLL to any output, providing total flexibility. I2C registers configure all parameters.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power<\/td>Core supply (1.71V to 3.6V)<\/td><\/tr>
      2<\/td>XA<\/td>Input<\/td>Crystal input<\/td><\/tr>
      3<\/td>XB<\/td>Input<\/td>Crystal input<\/td><\/tr>
      4<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      5<\/td>SCL<\/td>Input<\/td>I2C clock<\/td><\/tr>
      6<\/td>SDA<\/td>I\/O<\/td>I2C data<\/td><\/tr>
      7<\/td>CLK0<\/td>Output<\/td>Clock output 0 (LVCMOS)<\/td><\/tr>
      8<\/td>CLK1<\/td>Output<\/td>Clock output 1 (LVCMOS)<\/td><\/tr>
      9<\/td>CLK2<\/td>Output<\/td>Clock output 2 (LVCMOS)<\/td><\/tr>
      10<\/td>VDDO<\/td>Power<\/td>Output supply (1.8V, 2.5V, or 3.3V)<\/td><\/tr><\/table>","application_scenarios":"
      • RF transceiver local oscillator generation for amateur radio and SDR<\/li>
      • FPGA multi-clock domain generation from single crystal<\/li>
      • Replacing multiple crystal oscillators in consumer electronics<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Skyworks<\/td>SI5351A-B02075-GTR<\/td>10-MSOP<\/td>Tape and reel version<\/td><\/tr>
        Skyworks<\/td>SI5351B-B-GM<\/td>20-QFN<\/td>With internal VCXO<\/td><\/tr>
        TI<\/td>CDCE913PWR<\/td>14-TSSOP<\/td>Programmable clock, 1 output<\/td><\/tr>
        Renesas<\/td>5P49V5901B196NLGI<\/td>24-QFN<\/td>Programmable clock generator<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/2484","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=2484"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/2484\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media\/2769"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=2484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=2484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=2484"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=2484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}