{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCM1821IRTER","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCM1821IRTER","canonicalUrl":"https://icboms.com/texas-instruments/PCM1821IRTER","factsUrl":"https://icboms.com/api/mcp/products/PCM1821IRTER","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Burr-Brown™ PCM1821IRTER stereo audio ADC, 32-bit, 192-kHz sampling, I²S/TDM data interface, 20-WQFN (3x3 mm) exposed-pad package, -40 to +125°C.","salesMarkdown":"## 32-bit, 192-kHz stereo ADC with I²S/TDM output The PCM1821IRTER is a two-channel, 32-bit audio ADC sampling from 8 kHz to 192 kHz, part of the Burr-Brown™ series from Texas Instruments. Data exits over a serial I²S or TDM interface, making it a direct fit for DSPs, FPGAs, or audio codecs that expect a standard audio serial port. The -40°C to +125°C operating range covers industrial and automotive cabin-temperature environments where consumer-grade CODECs would drift out of spec. ## Supply rails and package footprint It needs two supply domains: a 3 V to 3.6 V analog rail and a 1.65 V to 1.95 V digital I/O rail — the split lets the digital interface run at the same voltage as the host controller without a level shifter. Housed in a 20-WFQFN with exposed pad (3 mm × 3 mm), the part requires a thermal-land pattern on the PCB for heat sinking; the pad should be connected to the analog ground plane. Surface-mount assembly with the 0.5 mm pitch QFN footprint is standard for reflow; the exposed pad needs a solder-paste stencil aperture that covers 50–70 % of the pad area to avoid voids. ## Active production and sourcing posture Sourced through authorized and independent distribution channels; pricing and lead time are confirmed at RFQ against the BOM quantity.","metaTitle":"TI PCM1821IRTER Audio ADC, 32-bit 192 kHz, I²S/TDM, WQFN","metaDescription":"Texas Instruments PCM1821IRTER stereo audio ADC, 32-bit, 192-kHz sampling, I²S/TDM interface, -40 to +125°C, 20-WQFN. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":"Burr-Brown™","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"ADC, Audio","Series":"Burr-Brown™","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Data Interface":"I²S, TDM","Package / Case":"20-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 3.6V, 1.65V ~ 1.95V","Number of Channels":"2","Operating Temperature":"-40°C ~ 125°C (TA)","Voltage Supply Source":"Analog and Digital","Supplier Device Package":"20-WQFN (3x3)","Sampling Rate (Per Second)":"8k ~ 192k"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.71","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.71000","currency":"USD"},{"qty":10,"price":"$3.33300","currency":"USD"},{"qty":25,"price":"$3.15080","currency":"USD"},{"qty":100,"price":"$2.73070","currency":"USD"},{"qty":250,"price":"$2.59064","currency":"USD"},{"qty":500,"price":"$2.32458","currency":"USD"},{"qty":1000,"price":"$1.96048","currency":"USD"},{"qty":3000,"price":"$1.86246","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/097de4ef7d99368974734b254f8c13dd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PCM1821IRTER's data interface and how does it connect to a processor?","answer":"The PCM1821IRTER uses an I²S or TDM serial interface. I²S carries stereo data on two wires (bit clock, word clock, data); TDM mode packs multiple channels onto a single data line, useful when connecting to a DSP or FPGA that expects a time-division multiplexed audio bus."},{"question":"Does the PCM1821IRTER require separate analog and digital supply voltages?","answer":"Yes. The analog supply needs 3 V to 3.6 V, and the digital I/O supply needs 1.65 V to 1.95 V. This split lets the digital interface match a 1.8 V host logic level directly without an external translator."},{"question":"What temperature range does the PCM1821IRTER support?","answer":"It is specified for -40°C to +125°C ambient, covering industrial and automotive-grade applications where the ambient temperature inside an enclosure or near a motor drive can exceed 85°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/PCM1821IRTER","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCM1821IRTER when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}