{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADSP-2181BSZ-133","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADSP-2181BSZ-133","canonicalUrl":"https://icboms.com/analog-devices/ADSP-2181BSZ-133","factsUrl":"https://icboms.com/api/mcp/products/ADSP-2181BSZ-133","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADSP-2181BSZ-133, ADSP-21xx series, fixed-point DSP controller, 33.3 MHz clock rate, 80 kB on-chip RAM, 5.00 V core/I/O, -40°C to 85°C industrial temperature, 128-BQFP surface-mount package.","salesMarkdown":"## 16-bit fixed-point DSP with 80 kB single-cycle RAM The ADSP-2181BSZ-133 is a 16-bit fixed-point DSP from the ADSP-21xx family, clocked at 33.3 MHz. Its 80 kB of on-chip RAM is split between program and data memory, both accessible in a single cycle — no wait-state penalty for tight filter loops or FFT butterflies. Both the core and I/O run from a single 5.00 V rail, eliminating the need for a separate level translator. The Synchronous Serial Port (SSP) handles codec or serial ADC interfaces directly. ## Industrial temperature range, legacy PQFP footprint The 128-PQFP (28x28 mm) body uses a 0.635 mm pitch, typical for mid-90s DSP layouts; rework requires a preheat profile that avoids warping the large epoxy body. Non-volatile memory is external — the DSP boots from a separate serial or parallel flash. The 128-BQFP package has no exposed pad; decoupling should follow the datasheet's recommended layout to keep core noise below the 5 V rail tolerance. ## Active lifecycle — no LTB, but monitor the 5V DSP market That said, 5 V fixed-point DSPs are a shrinking segment — most new designs have migrated to 3.3 V or lower. If this part is in a production BOM, securing a buffer lot or qualifying a voltage-translated alternative may be prudent before the supply tightens. Sourced to order through independent distribution; availability and current pricing confirmed at RFQ. The part is ROHS3 compliant — no RoHS exemption expiry to track for the 5 V process.","metaTitle":"ADSP-2181BSZ-133 ADI Fixed-Point DSP, 33.3 MHz, 80 kB RAM","metaDescription":"ADSP-2181BSZ-133 fixed-point DSP, 33.3 MHz clock, 80 kB on-chip RAM, 5 V core/I/O, -40°C to 85°C, 128-PQFP. Active, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":"ADSP-21xx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Fixed Point","Series":"ADSP-21xx","Package":"Bulk","Interface":"Synchronous Serial Port (SSP)","Clock Rate":"33.3MHz","On-Chip RAM":"80kB","Mounting Type":"Surface Mount","Voltage - I/O":"5.00V","Package / Case":"128-BQFP","Voltage - Core":"5.00V","lifecycle_stage":"eol_hot","Non-Volatile Memory":"External","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"128-PQFP (28x28)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$45.81","stockQuantity":0,"priceTiers":[{"qty":7,"price":"$45.81000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/90ed0f47677fb3cb92881bf368424a32.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADSP-2181BSZ-133","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADSP-2181BSZ-133 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}}