{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC6951IUHF#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC6951IUHFPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC6951IUHFPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC6951IUHF%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC6951IUHF#PBF, PLL clock synthesizer, 2.5 GHz max frequency, CML and LVDS outputs, 3.15V to 3.45V supply, -40°C to 105°C, 40-WFQFN exposed pad, Tube, ROHS3 compliant.","salesMarkdown":"## What this PLL clock synthesizer does The LTC6951IUHF#PBF is a single-circuit PLL clock synthesizer that accepts a clock input and produces up to five outputs in CML or LVDS format, with a maximum output frequency of 2.5 GHz. This makes it a fit for high-speed ADC/DAC clocking, SERDES reference generation, or RF LO synthesis in test equipment and base station infrastructure. ## Supply rail and temperature grade The supply range is 3.15V to 3.45V, so a nominal 3.3V rail sits comfortably inside the window. The industrial temperature grade of -40°C to 105°C supports outdoor and under-hood deployment without a commercial-grade derating step. ## Package and rework considerations Housed in a 40-WFQFN with exposed pad (5x7 mm body), the part has a central thermal pad that must be soldered to a ground plane with thermal vias. The exposed pad also serves as the low-inductance return path for the PLL charge pump — a cold solder joint under the pad will degrade phase noise.","metaTitle":"LTC6951IUHF#PBF PLL Clock Synthesizer, 2.5 GHz, Active","metaDescription":"Analog Devices LTC6951IUHF#PBF PLL clock synthesizer, 2.5 GHz max, CML/LVDS outputs, 3.15-3.45V supply, -40 to 105°C, 40-QFN. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Clock & Timing ICs"],"specifications":{"PLL":"Yes","Input":"Clock","Output":"CML, LVDS","Package":"Tube","Mounting Type":"Surface Mount","Package / Case":"40-WFQFN Exposed Pad","Frequency - Max":"2.5GHz","lifecycle_stage":"eol_hot","Voltage - Supply":"3.15V ~ 3.45V","Divider/Multiplier":"Yes/No","Number of Circuits":"1","Ratio - Input:Output":"1:5","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"40-QFN (5x7)","Differential - Input:Output":"Yes/Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$21.13","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$21.13000","currency":"USD"},{"qty":10,"price":"$19.48800","currency":"USD"},{"qty":25,"price":"$18.61240","currency":"USD"},{"qty":100,"price":"$16.64160","currency":"USD"},{"qty":250,"price":"$15.87520","currency":"USD"},{"qty":500,"price":"$15.10880","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/802b6f7ad4cdb60bda8abbd54c5d9687.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LTC6951IUHF#PBF compatible with a 3.3V supply?","answer":"Yes. The supply voltage range is 3.15V to 3.45V, so a nominal 3.3V rail is within tolerance."},{"question":"Does LTC6951IUHF#PBF replace LTC6951IUHF?","answer":"The #PBF suffix indicates ROHS3 compliant finish. The base part number LTC6951IUHF is the same silicon; the #PBF variant is the lead-free version. Pin compatibility is identical — the package and pinout did not change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC6951IUHFPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC6951IUHFPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}