{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX11666AUB/V+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX11666AUB-V","canonicalUrl":"https://icboms.com/analog-devices/MAX11666AUB-V","factsUrl":"https://icboms.com/api/mcp/products/MAX11666AUB%2FV%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX11666AUB/V+, 12-bit SAR ADC, 2-channel single-ended, 500 ksps, SPI, 2.2V–3.6V supply, 10-uMAX-EP exposed-pad package, -40°C to +125°C.","salesMarkdown":"## 12-bit SAR ADC for extended-temperature data acquisition The Maxim Integrated MAX11666AUB/V+ is a 12-bit successive-approximation-register (SAR) ADC with a 2-channel multiplexer, single-ended inputs, and a 1:1 S/H-to-ADC ratio. It samples at 500 ksps over an SPI interface and operates from a single 2.2 V to 3.6 V supply for both analog and digital rails. The part is packaged in a 10-uMAX-EP (exposed pad) and rated for -40°C to +125°C, making it suitable for industrial and automotive sensor interfaces, motor-control feedback, and battery-monitoring systems where wide temperature range and moderate throughput are required. ## 500 ksps throughput — what it means for the signal chain At 500 ksps the ADC can digitize a 250 kHz full-scale sine wave with adequate margin for Nyquist sampling. For multiplexed systems switching between the two single-ended inputs, the 1:1 S/H ratio means the acquisition time is shared across channels — budget 2 µs per conversion plus settling. The SAR architecture delivers no pipeline delay, so each sample corresponds to a single conversion result, which simplifies control loops in motor-drive or power-inverter current sensing. ## Supply-rail flexibility and reference The reference type is supply-based (VDD), so the full-scale range tracks the analog supply. For a 3.3 V rail the LSB is 806 µV; at 2.5 V it drops to 610 µV. This eliminates the need for a separate reference IC, but it also ties ADC accuracy to the regulation of the supply — a low-noise LDO on the analog rail is recommended if the digital supply carries switching ripple. ## Package and thermal management The 10-uMAX-EP (exposed pad) package measures 3.00 mm × 3.00 mm (0.118\" width) and requires a thermal-land pattern on the PCB. The exposed pad must be soldered to a ground plane with thermal vias to keep junction temperature within limits, especially when operating at 125°C ambient and 500 ksps continuous conversion. The tube shipping medium is typical for prototype and small-run quantities; reel options for production volume are available through the supply chain. ## Lifecycle and compliance It is ROHS3 compliant. No official successor or pin-compatible second source is listed in the available records, so the part is single-sourced from Maxim Integrated (now part of Analog Devices). For volume or long-term programs, confirm lead time and allocate buffer stock through the RFQ process.","metaTitle":"MAX11666AUB/V+ 12-bit SAR ADC, 500 ksps, SPI","metaDescription":"MAX11666AUB/V+ 12-bit SAR ADC, 2-channel, 500 ksps, SPI interface, 10-uMAX-EP, -40°C to +125°C. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Input Type":"Single Ended","Architecture":"SAR","Configuration":"MUX-S/H-ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"12","Package / Case":"10-TFSOP, 10-MSOP (0.118\\\", 3.00mm Width) Exposed Pad","Reference Type":"Supply","Ratio - S/H:ADC":"1:1","lifecycle_stage":"eol_hot","Number of Inputs":"2","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"10-uMAX-EP","Number of A/D Converters":"1","Voltage - Supply, Analog":"2.2V ~ 3.6V","Voltage - Supply, Digital":"2.2V ~ 3.6V","Sampling Rate (Per Second)":"500k"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.26","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.26000","currency":"USD"},{"qty":10,"price":"$3.82200","currency":"USD"},{"qty":25,"price":"$3.61320","currency":"USD"},{"qty":100,"price":"$3.13150","currency":"USD"},{"qty":250,"price":"$2.97092","currency":"USD"},{"qty":500,"price":"$2.66580","currency":"USD"},{"qty":1000,"price":"$2.24826","currency":"USD"},{"qty":2500,"price":"$2.13585","currency":"USD"}]},"links":{"datasheetUrl":"https://datasheets.maximintegrated.com/en/ds/MAX11661-MAX11666.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is MAX11666AUB/V+ SPI compatible?","answer":"Yes, the data interface is SPI. The serial clock and data lines operate at the same supply voltage as the digital rail (2.2 V to 3.6 V), so level shifting is only needed if the host controller runs at a different I/O voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX11666AUB-V","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX11666AUB-V 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}}