{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1281BEUP+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1281BEUP","canonicalUrl":"https://icboms.com/analog-devices/MAX1281BEUP","factsUrl":"https://icboms.com/api/mcp/products/MAX1281BEUP%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX1281BEUP+, 12-bit SAR ADC, 300k samples per second, SPI interface, 4 or 8 pseudo-differential/single-ended inputs, 2.7V-3.6V supply, -40°C to 85°C, 20-TSSOP package, Tube.","salesMarkdown":"## 12-bit SAR ADC with flexible input mux The MAX1281BEUP+ is a 12-bit SAR ADC with 300k samples per second over SPI. It integrates a 4- or 8-channel input multiplexer for pseudo-differential or single-ended operation. ## Input configuration and reference options The MUX-S/H-ADC architecture lets you select between 4 pseudo-differential or 8 single-ended inputs via software. The S/H-to-ADC ratio is 1:1, meaning each conversion samples a fresh input. The reference can be driven externally or taken from the internal bandgap, giving flexibility to match the input signal range to the ADC full-scale without extra components. ## Lifecycle and sourcing No last-time-buy or obsolescence risk is indicated.","metaTitle":"MAX1281BEUP+ ADC, 12-Bit SAR, 300k SPS, 20-TSSOP","metaDescription":"Maxim MAX1281BEUP+ 12-bit SAR ADC, 300k sampling rate, SPI, pseudo-differential/single-ended inputs, -40°C to 85°C, 20-TSSOP. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Input Type":"Pseudo-Differential, Single Ended","Architecture":"SAR","Configuration":"MUX-S/H-ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"12","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","Reference Type":"External, Internal","Ratio - S/H:ADC":"1:1","lifecycle_stage":"eol_hot","Number of Inputs":"4, 8","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"20-TSSOP","Number of A/D Converters":"1","Voltage - Supply, Analog":"2.7V ~ 3.6V","Voltage - Supply, Digital":"2.7V ~ 3.6V","Sampling Rate (Per Second)":"300k"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$22.24","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$22.24000","currency":"USD"},{"qty":10,"price":"$20.51300","currency":"USD"},{"qty":25,"price":"$19.59080","currency":"USD"},{"qty":100,"price":"$17.51660","currency":"USD"},{"qty":250,"price":"$16.70996","currency":"USD"},{"qty":500,"price":"$15.90326","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4c74b3e020e7d1f01f289d8b690fbfc0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can MAX1281BEUP+ handle single-ended inputs with an external reference?","answer":"Yes, the MAX1281BEUP+ supports single-ended inputs (up to 8 channels) and accepts an external reference, giving flexibility to scale the input range."},{"question":"What is the sampling rate of MAX1281BEUP+?","answer":"The MAX1281BEUP+ samples at 300k samples per second."},{"question":"Can MAX1281BEUP+ work with a 2.7V supply?","answer":"Yes, the MAX1281BEUP+ operates from a 2.7V to 3.6V supply on both analog and digital rails."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1281BEUP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1281BEUP 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}}