{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4922TL/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4922TL-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4922TL-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4922TL%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Boomer® Class AB stereo headphone amplifier, LM4922TL/NOPB, 80mW x 1 @ 16Ohm, 1.6V-4.2V supply, 14-WFBGA DSBGA, surface mount, -40°C to 85°C.","salesMarkdown":"## Class AB headphone driver for battery-powered audio The LM4922TL/NOPB is a Texas Instruments Boomer® series Class AB audio amplifier designed to drive stereo headphones directly from a single lithium-ion cell. Rated 80 mW per channel into a 16 Ohm load, this part delivers enough level for consumer headphones without the crossover distortion of a Class B stage or the switching noise of a Class D. The Class AB topology keeps the output devices conducting through the zero-crossing region, so the distortion floor stays low at low listening levels — the real advantage over a Class D part in a quiet playback environment. The 14-WFBGA (DSBGA) package is a wafer-level chip-scale ball grid array — the die itself is the package, with solder balls directly on the silicon pads. There is no plastic overmold, so the part is thin (under 1 mm seated height) but the balls are small and the pitch is tight. A hot-air rework station with a fine nozzle can handle it, but the board needs a solder mask defined pad pattern matching the TI recommended land layout. The part orientation mark is a small dot on the top surface — locate it under magnification before placing. Because the backside of the die is exposed, the package is sensitive to mechanical stress from board flex. Mount it near a stiffening feature or in a region of the PCB that sees minimal bending during assembly and field use. ## Active production and compliance The ROHS3 compliance (exemption-free) means no restricted substances above the threshold limits — no lead, no phthalates, no conflict minerals reporting issues for global shipments. If a BOM hedge is needed, the parametric search within TI's Boomer® family would target another Class AB headphone amp in a similar supply voltage and output power range, but the DSBGA footprint is specific to this part — a board spin would be required for any alternative package.","metaTitle":"Texas Instruments LM4922TL/NOPB Class AB Headphone Amp, 80mW","metaDescription":"Texas Instruments LM4922TL/NOPB Boomer® Class AB stereo headphone amplifier, 80mW x 1 @ 16Ohm, 1.6V-4.2V supply, 14-DSBGA. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"Boomer®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Class AB","Series":"Boomer®","Package":"Bulk","Output Type":"Headphones, 2-Channel (Stereo)","Mounting Type":"Surface Mount","Package / Case":"14-WFBGA, DSBGA","lifecycle_stage":"eol_hot","Voltage - Supply":"1.6V ~ 4.2V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"14-DSBGA","Max Output Power x Channels @ Load":"80mW x 1 @ 16Ohm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.18","stockQuantity":0,"priceTiers":[{"qty":256,"price":"$1.18000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the output power of the LM4922TL/NOPB into headphones?","answer":"The LM4922TL/NOPB delivers 80 mW per channel into a 16 Ohm load. This is sufficient for consumer headphone levels from a single Li-ion cell supply."},{"question":"What package does the LM4922TL/NOPB use and can it be reworked?","answer":"It comes in a 14-ball DSBGA (wafer-level chip-scale package). Rework is possible with a fine-nozzle hot-air station and a solder mask defined pad layout matching TI's recommendation, but the small ball pitch and exposed die backside require careful thermal profiling and magnification for orientation marking."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4922TL-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4922TL-NOPB 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}}