{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1243BESA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1243BESA","canonicalUrl":"https://icboms.com/analog-devices/MAX1243BESA","factsUrl":"https://icboms.com/api/mcp/products/MAX1243BESA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX1243BESA+ 10-bit SAR ADC, 73k samples per second, single-ended input, SPI data interface, external reference, 8-SOIC package, industrial temperature range.","salesMarkdown":"## 73k samples/sec, 10-bit SAR ADC for single-channel sensor acquisition The MAX1243BESA+ is a 10-bit successive-approximation-register (SAR) ADC from Analog Devices, sampling at 73k samples per second over an SPI serial interface. The single-ended input with a 1:1 S/H-to-ADC ratio means one analog channel is converted each conversion cycle — suited for applications where a single sensor voltage (0 V to Vref) is digitized and read by a microcontroller over a three-wire SPI bus. The external reference (not on-chip) sets the full-scale input range; the buyer must provide a stable reference voltage, typically 2.5 V or 4.096 V, depending on the sensor output span. The part is RoHS3 compliant (lead-free) and ships in tubes.","metaTitle":"MAX1243BESA+ ADC 10-Bit SAR 73k SPI 8-SOIC","metaDescription":"MAX1243BESA+ 10-bit SAR ADC, 73k samples/sec, SPI interface, single-ended input, external reference, -40°C to 85°C, 8-SOIC. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Input Type":"Single Ended","Architecture":"SAR","Configuration":"S/H-ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"10","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Reference Type":"External","Ratio - S/H:ADC":"1:1","lifecycle_stage":"eol_hot","Number of Inputs":"1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-SOIC","Number of A/D Converters":"1","Voltage - Supply, Analog":"2.7V ~ 5.25V","Voltage - Supply, Digital":"2.7V ~ 5.25V","Sampling Rate (Per Second)":"73k"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.73","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.73000","currency":"USD"},{"qty":10,"price":"$10.59700","currency":"USD"},{"qty":25,"price":"$10.10400","currency":"USD"},{"qty":100,"price":"$8.77330","currency":"USD"},{"qty":250,"price":"$8.37896","currency":"USD"},{"qty":500,"price":"$7.63964","currency":"USD"},{"qty":1000,"price":"$6.65388","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy MAX1243BESA+ and how is it quoted?","answer":"The MAX1243BESA+ is sourced to order through independent distribution channels. No stock-holding claim is made — each order is quoted individually."},{"question":"Does MAX1243BESA+ have an internal voltage reference?","answer":"No. The MAX1243BESA+ requires an external reference (Reference Type: External). The full-scale input range equals the reference voltage applied to the REF pin — typically 2.5 V or 4.096 V from a dedicated reference IC or a precision voltage source."},{"question":"Is MAX1243BESA+ compatible with 3.3 V SPI?","answer":"Yes. The SCLK, CS, and DOUT pins are 3.3 V-compatible as long as the digital supply matches the microcontroller's I/O voltage."},{"question":"What is the closest pin-compatible alternative to MAX1243BESA+?","answer":"Within the same Analog Devices MAX124x family, the MAX1240BESA+ is a 10-bit SAR ADC with the same 8-SOIC footprint and SPI interface but offers a higher sampling rate (100k samples/sec). The pinout is identical, so a BOM swap requires no board layout change — only a firmware update to the SPI timing if the higher rate is used."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1243BESA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1243BESA 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}}