{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX1402EAI+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX1402EAI","canonicalUrl":"https://icboms.com/analog-devices/MAX1402EAI","factsUrl":"https://icboms.com/api/mcp/products/MAX1402EAI%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX1402EAI+, 18-bit sigma-delta ADC, MUX-PGA-ADC configuration, differential/pseudo-differential inputs, SPI interface, 480 SPS, 28-SSOP package, -40°C to 85°C.","salesMarkdown":"## 18-bit sigma-delta ADC with integrated PGA and input mux The Maxim Integrated MAX1402EAI+ is an 18-bit sigma-delta ADC that integrates a programmable gain amplifier (PGA) and an input multiplexer in a single 28-SSOP package. It accepts differential or pseudo-differential inputs through a 3- or 5-channel mux, routes them through the PGA, and converts at up to 480 samples per second via a sigma-delta architecture. The SPI data interface keeps the digital side clean — two wires for clock and data, plus a chip-select line. Typical applications include weigh scales, pressure transmitters, temperature measurement, and industrial process control loops where 18-bit resolution and low noise matter more than conversion speed. ## Supply rails and temperature grade Analog supply is a single 5 V rail; the digital supply runs from 2.7 V up to 5.25 V. The -40°C to 85°C operating range covers industrial enclosures, outdoor telecom cabinets, and engine-bay-adjacent instrumentation — not full military, but solid for factory-floor and field-transmitter duty. ## 480 SPS — what it means for the measurement chain The 480 SPS maximum sampling rate is typical for a high-resolution sigma-delta converter. At 18 bits, the digital filter settles in a few conversion cycles. ## Package and footprint Housed in a 28-pin SSOP (0.209-inch body width, 5.30 mm), the MAX1402EAI+ is a surface-mount part. The supplier device package is 28-SSOP — same footprint as the industry-standard SSOP-28. No through-hole option exists for this variant; the EAI+ suffix indicates the SSOP package and ROHS3 compliance. ## Lifecycle and sourcing The MAX1402EAI+ carries an Active product status with ROHS3 compliance.","metaTitle":"MAX1402EAI+ 18-Bit Sigma-Delta ADC, 480 SPS, 28-SSOP","metaDescription":"MAX1402EAI+ 18-bit sigma-delta ADC with PGA, MUX, SPI interface. 480 SPS sampling rate, industrial temp range.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"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":"5V","Voltage - Supply, Digital":"2.7V ~ 5.25V","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://datasheets.maximintegrated.com/en/ds/MAX1402.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the resolution of MAX1402EAI+?","answer":"The MAX1402EAI+ is an 18-bit sigma-delta ADC. That gives 262144 code steps across the input range, which translates to roughly 76 µV per LSB on a 5 V reference — enough for precision weigh-scale and pressure-sensor applications."},{"question":"Can I replace MAX1402EPI+ with MAX1402EAI+?","answer":"The MAX1402EPI+ is the PDIP through-hole variant of the same die. The EAI+ (SSOP) and EPI+ (PDIP) share the same electrical specifications — 18-bit sigma-delta, PGA, MUX, SPI — but differ in package and pinout. They are not pin-compatible; a board redesign is required to swap between the two. Verify the PCB footprint before ordering a replacement."},{"question":"What is the maximum sampling rate of MAX1402EAI+?","answer":"The maximum sampling rate is 480 samples per second. At 18-bit resolution the digital filter settling time limits effective throughput to roughly 50–100 conversions per second in a multiplexed scan."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX1402EAI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX1402EAI 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}}