{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMX2331UTM","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMX2331UTM","canonicalUrl":"https://icboms.com/texas-instruments/LMX2331UTM","factsUrl":"https://icboms.com/api/mcp/products/LMX2331UTM","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PLLatinum™ PLL Frequency Synthesizer, LMX2331UTM, Dual 2GHz/600MHz, 2.7V-5.5V, CMOS/TTL Input, CMOS Output, 20-TSSOP, Bulk.","salesMarkdown":"## Dual-band PLL with bypass for RF and IF synthesis The Texas Instruments LMX2331UTM is a PLLatinum PLL frequency synthesizer with a bypass mode, delivering two independent frequency synthesis paths: one reaching 2 GHz and the other 600 MHz. This dual-band architecture suits RF front-end designs where a single IC generates both the main local oscillator and the intermediate frequency reference. ## Supply, temperature, and interface flexibility Input logic accepts both CMOS and TTL levels, while the output is CMOS, so it interfaces directly with standard baseband processors or FPGAs without external level translation. The 3:1 input-to-output ratio and differential input with single-ended output give the system architect flexibility in reference routing and noise rejection. ## Package and board-fit for RF layouts Housed in a 20-TSSOP with a 0.173-inch (4.40 mm) body width, the LMX2331UTM fits tight RF sections where trace length to the VCO and loop filter must be minimised. The surface-mount package suits standard reflow assembly, though note the RoHS non-compliant status — the tin-lead finish is intentional for high-reliability solder joints in aerospace or defence assemblies where lead-free whisker risk is unacceptable.","metaTitle":"Texas Instruments LMX2331UTM PLL Frequency Synthesizer","metaDescription":"Texas Instruments LMX2331UTM PLLatinum dual frequency synthesizer. Active lifecycle. 2GHz & 600MHz max frequency, 2.7-5.5V supply, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"PLLatinum™","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PLL":"Yes with Bypass","Type":"PLL Frequency Synthesizer","Input":"CMOS, TTL","Output":"CMOS","Series":"PLLatinum™","Package":"Bulk","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","Frequency - Max":"2GHz, 600MHz","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 5.5V","Divider/Multiplier":"Yes/No","Number of Circuits":"1","Ratio - Input:Output":"3:1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"20-TSSOP","Differential - Input:Output":"Yes/No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.49","stockQuantity":0,"priceTiers":[{"qty":202,"price":"$1.49000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What does the PLL with Bypass feature mean for this synthesizer?","answer":"The LMX2331UTM includes a bypass mode that lets the reference signal pass through the PLL without frequency multiplication or division. This is useful when the system needs a clean buffered reference clock for one path while the other path synthesises a different frequency — common in dual-conversion receivers."},{"question":"What is the maximum frequency range of the LMX2331UTM?","answer":"The device covers two bands: one synthesizer path reaches 2 GHz, the other reaches 600 MHz. This covers typical RF and IF ranges for cellular, ISM-band radios, and satellite downconverters."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMX2331UTM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMX2331UTM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}