{"id":7495,"date":"2026-06-25T07:31:29","date_gmt":"2026-06-25T07:31:29","guid":{"rendered":"https:\/\/materialparts.com\/lmx2582rhar\/"},"modified":"2026-06-25T07:31:29","modified_gmt":"2026-06-25T07:31:29","slug":"lmx2582rhar","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lmx2582rhar\/","title":{"rendered":"LMX2582RHAR"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The LMX2582RHAR from Texas Instruments is a high-performance wideband RF PLLatinum synthesizer with integrated VCO covering 20MHz to 5.5GHz in a 40-pin VQFN package. Achieving 47fs RMS jitter at 1.8GHz output and -231dBc\/Hz normalized PLL noise floor, it delivers industry-leading phase noise for demanding RF applications.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Output Frequency<\/td>\n20 MHz to 5500 MHz<\/td>\n<\/tr>\n
VCO Phase Noise<\/td>\n-144.5 dBc\/Hz @ 1MHz offset, 1.8GHz<\/td>\n<\/tr>\n
PLL Noise Floor<\/td>\n-231 dBc\/Hz normalized<\/td>\n<\/tr>\n
RMS Jitter<\/td>\n47 fs (12kHz-20MHz, 1.8GHz)<\/td>\n<\/tr>\n
Input Frequency<\/td>\nUp to 1400 MHz<\/td>\n<\/tr>\n
Phase Detector Rate<\/td>\nUp to 200 MHz (400 MHz integer)<\/td>\n<\/tr>\n
Modes<\/td>\nFractional-N and Integer-N<\/td>\n<\/tr>\n
Outputs<\/td>\n2 differential (configurable single-ended)<\/td>\n<\/tr>\n
Supply<\/td>\n3.3 V single supply<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nVQFN-40 (6 x 6 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • 20MHz to 5.5GHz continuous output with integrated VCO<\/li>\n
  • 47fs RMS jitter at 1.8GHz for ultra-low phase noise systems<\/li>\n
  • -231dBc\/Hz normalized PLL noise floor, industry-leading<\/li>\n
  • 32-bit fractional divider for fine frequency resolution<\/li>\n
  • Dual differential outputs programmable from VCO or channel divider<\/li>\n
  • Fast calibration option for frequency changes under 25us<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • 5G small cell and base station LO generation<\/li>\n
    • Radar and software-defined radio frequency synthesis<\/li>\n
    • Satellite transceiver local oscillator<\/li>\n
    • Test and measurement equipment<\/li>\n
    • Wideband RF transceiver clock generation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LMX2582RHAR from Texas Instruments is a high-performance wideband RF PLLatinum synthesizer with integrated VCO covering 20MHz to 5.5GHz in a 40-pin VQFN package. Achieving 47fs RMS jitter at 1.8GHz output and -231dBc\/Hz normalized PLL noise floor, it delivers industry-leading phase noise for demanding RF applications. Key Specifications Output Frequency 20 MHz to […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[138],"class_list":["post-7495","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"5.5GHz RF PLL, integrated VCO, 47fs jitter, VQFN-40","date_code":"","package_case":"VQFN-40 \/ RHA (6 x 6 x 0.9 mm)","in_stock":3456,"datasheet":"https:\/\/www.ti.com\/product\/LMX2582","price":"$8.40 @ 1ku","product_introduction":"The LMX2582RHAR from Texas Instruments is a high-performance wideband PLLatinum RF synthesizer with an integrated VCO covering 20MHz to 5.5GHz. Achieving only 47fs RMS jitter (12kHz to 20MHz) at 1.8GHz output and a -231dBc\/Hz normalized PLL noise floor, it delivers industry-leading phase noise performance. The device supports both fractional-N (with 32-bit fractional divider) and integer-N modes, accepts input frequencies up to 1.4GHz, and features dual flexible differential outputs that can be configured independently as single-ended. A programmable low-noise multiplier mitigates integer boundary spurs. The device operates from a single 3.3V supply with integrated LDOs, simplifying power supply design.","working_principle":"The LMX2582RHAR operates as a fractional-N\/integer-N PLL frequency synthesizer with integrated VCO. (1) The phase detector compares the divided VCO feedback signal with the reference input, producing a charge pump output that drives the external loop filter. The loop filter voltage controls the VCO frequency to achieve lock. (2) The integrated VCO bank covers the full 3.35-5.5GHz range through automatic band selection calibration. For outputs below 3.35GHz, the channel divider divides the VCO frequency by 2, 4, 8, 16, 32, 48, 64, or 96. (3) In fractional-N mode, the 32-bit fractional divider and MASH modulator allow sub-Hz frequency resolution, while the programmable phase adjustment enables precise phase alignment between multiple synthesizers. The innovative integer boundary spur (IBS) removal technique suppresses spurs when the fractional divider is near an integer value.","pin_description":"
      Pin Group<\/th>Name<\/th>Function<\/th><\/tr>
      1-3<\/td>VCC, GND<\/td>Power and ground<\/td><\/tr>
      4-5<\/td>OSCin_P\/N<\/td>Reference input (differential)<\/td><\/tr>
      6<\/td>REFout<\/td>Reference output buffer<\/td><\/tr>
      7<\/td>CSB<\/td>SPI chip select (active low)<\/td><\/tr>
      8<\/td>SDI\/O<\/td>SPI data input\/output<\/td><\/tr>
      9<\/td>SCLK<\/td>SPI clock<\/th><\/tr>
      10<\/td>LD<\/td>Lock detect output<\/td><\/tr>
      11-16<\/td>RFoutA_P\/N<\/td>Output A (differential)<\/td><\/tr>
      17-22<\/td>RFoutB_P\/N<\/td>Output B (differential)<\/td><\/tr>
      23-40<\/td>VCC, GND, CPout<\/td>Power, ground, charge pump<\/td><\/tr><\/table>","application_scenarios":"
      • 5G small cell and base station local oscillator with sub-50fs jitter<\/li>
      • Radar and software-defined radio agile frequency synthesis<\/li>
      • Satellite transceiver low-phase-noise LO generation<\/li>
      • Test and measurement equipment wideband signal generation<\/li>
      • Wideband RF transceiver ADC\/DAC clock generation<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LMX2594RHAR<\/td>TI<\/td>15GHz output, higher performance<\/td><\/tr>
        LMX2582RHAT<\/td>TI<\/td>Tray packaging, same silicon<\/td><\/tr>
        ADF5355BCPZ<\/td>Analog Devices<\/td>13.6GHz, integrated VCO<\/td><\/tr>
        LMX2592RHAR<\/td>TI<\/td>9.8GHz, similar family<\/td><\/tr>
        ADF4355-3BCPZ<\/td>Analog Devices<\/td>4GHz output, lower cost<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7495","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=7495"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7495\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7495"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7495"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7495"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}