{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4549BVH","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4549BVH","canonicalUrl":"https://icboms.com/texas-instruments/LM4549BVH","factsUrl":"https://icboms.com/api/mcp/products/LM4549BVH","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4549BVH, Audio AC '97 codec, 18-bit resolution, 2 ADC / 2 DAC, 90/89 dB dynamic range, 48-LQFP (7x7 mm), -40°C to 85°C, Active production.","salesMarkdown":"## What is the LM4549BVH? The LM4549BVH is a Texas Instruments Audio, AC '97 codec (cite:). It integrates two ADCs and two DACs at 18-bit resolution (cite:,), delivering a typical dynamic range of 90 dB on the ADC side and 89 dB on the DAC side (cite:). The serial data interface (cite:) and sigma-delta architecture (cite:) are standard for AC '97 compliance. ## Package and temperature grade Housed in a 48-LQFP (7x7 mm) surface-mount package (cite:,). The 0.50 mm pitch on the LQFP demands a controlled reflow profile; check the MSL before the oven to avoid popcorning. ## Supply rails and power sequencing The analog supply range is 4.2V to 5.5V, while the digital supply runs from 3.3V to 5.5V (cite:,). This split-rail architecture means the codec can interface directly with 3.3V logic controllers without a level shifter, but the analog rail must be clean — a linear regulator feeding the 5V analog pin is the usual practice. ## Lifecycle and sourcing It is listed as RoHS non-compliant (cite:), so check your assembly's RoHS exemption policy before committing the BOM. Available through our multi-source supply chain; pricing and lead time confirmed at quote time against your line-item quantity.","metaTitle":"LM4549BVH Audio Codec – Texas Instruments, AC '97, 18-Bit","metaDescription":"LM4549BVH Texas Instruments AC '97 audio codec, 18-bit resolution, 2 ADC / 2 DAC, 90/89 dB dynamic range. Active lifecycle, 48-LQFP (7x7 mm), -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"Type":"Audio, AC '97","Package":"Bulk","Sigma Delta":"Yes","Mounting Type":"Surface Mount","Data Interface":"Serial","Package / Case":"48-LQFP","lifecycle_stage":"eol_hot","Resolution (Bits)":"18 b","Number of ADCs / DACs":"2 / 2","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply, Analog":"4.2V ~ 5.5V","Voltage - Supply, Digital":"3.3V ~ 5.5V","Dynamic Range, ADCs / DACs (db) Typ":"90 / 89"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.15","stockQuantity":0,"priceTiers":[{"qty":73,"price":"$4.15000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f52a5d93f9f8c842b39361c8a3653d94.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the LM4549BVH compatible with AC'97?","answer":"Yes, the LM4549BVH is an Audio, AC '97 codec (cite:). It implements the AC '97 serial interface and sigma-delta conversion, making it a direct fit for any motherboard or embedded system that expects an AC '97 link."},{"question":"What is the dynamic range of the LM4549BVH?","answer":"The typical dynamic range is 90 dB for the ADCs and 89 dB for the DACs (cite:). This is in line with other AC '97 codecs of the same generation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4549BVH","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4549BVH 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}}