{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1403EAI+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1403EAI","canonicalUrl":"https://icboms.com/analog-devices/MAX1403EAI","factsUrl":"https://icboms.com/api/mcp/products/MAX1403EAI%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX1403EAI+ 18-bit sigma-delta ADC, MUX-PGA-ADC configuration, SPI interface, 480 SPS, SSOP-28 package, tube.","salesMarkdown":"## Input architecture and signal conditioning The MAX1403EAI+: The input multiplexer supports three differential or five pseudo-differential channels, giving flexibility to scan multiple sensor pairs or single-ended signals against a common return. The on-chip PGA amplifies low-level signals before conversion, reducing the need for external gain stages and preserving the 18-bit dynamic range. The sigma-delta architecture oversamples the input and shapes quantization noise out of the band of interest, achieving high resolution without the matching demands of a successive-approximation converter. An external voltage reference sets the full-scale range, so the reference noise and drift directly affect the measurement accuracy. ## Supply, interface, and temperature grade The SPI-compatible serial interface connects directly to a microcontroller or DSP with minimal pin count — four wires (SCLK, DIN, DOUT, CS) handle all configuration and data transfer. The SSOP-28 body (5.30 mm wide) fits on a two-layer board with a standard 0.65 mm pitch footprint. The tube packaging suits low-volume assembly and prototyping — the devices are aligned in a conductive anti-static tube that feeds directly into a pick-and-place feeder or manual placement station.","metaTitle":"MAX1403EAI+ Analog Devices 18-Bit Sigma-Delta ADC, SSOP-28","metaDescription":"MAX1403EAI+ 18-bit sigma-delta ADC with PGA, 480 SPS, SPI, SSOP-28. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Features":"PGA","Input Type":"Differential, Pseudo-Differential","Architecture":"Sigma-Delta","Configuration":"MUX-PGA-ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"18","Package / Case":"28-SSOP (0.209\\\", 5.30mm Width)","Reference Type":"External","lifecycle_stage":"eol_hot","Number of Inputs":"3, 5","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"28-SSOP","Number of A/D Converters":"1","Voltage - Supply, Analog":"2.7V ~ 3.6V","Voltage - Supply, Digital":"2.7V ~ 3.6V","Sampling Rate (Per Second)":"480"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$30.18","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$30.18000","currency":"USD"},{"qty":10,"price":"$27.83000","currency":"USD"},{"qty":25,"price":"$26.57920","currency":"USD"},{"qty":100,"price":"$23.76490","currency":"USD"},{"qty":250,"price":"$22.67048","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5c1d1d3282fb369306fbe37cf47747db.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the input configuration and how many channels does it have?","answer":"The MAX1403EAI+ has a MUX-PGA-ADC architecture with three differential or five pseudo-differential inputs. The on-chip PGA amplifies the selected signal before conversion, and the SPI interface handles all configuration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1403EAI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1403EAI 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}}