{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX121EWE+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX121EWE","canonicalUrl":"https://icboms.com/analog-devices/MAX121EWE","factsUrl":"https://icboms.com/api/mcp/products/MAX121EWE%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX121EWE+ SAR ADC, 14-bit, 308k SPS, single-ended input, SPI interface, 16-SOIC (0.295\", 7.50mm Width), tube.","salesMarkdown":"## 14-bit SAR at 308k SPS — what the sampling rate means for your signal chain The MAX121EWE+ is a 14-bit successive-approximation-register (SAR) ADC from Analog Devices, sampling at 308k samples per second. At this rate, the converter captures one full 14-bit word every 3.25 µs — fast enough to digitize a 150 kHz bandwidth signal under Nyquist, or to oversample a lower-frequency sensor for noise reduction. The single-ended input accepts one channel, with a 1:1 S/H-to-ADC ratio, meaning the sample-and-hold captures the input voltage directly before conversion starts. The SPI data interface keeps the digital side clean — four wires (SCLK, MOSI, MISO, CS) carry the conversion result to the host controller without the pin count of a parallel bus. For a 14-bit word at 308k SPS, the SPI clock needs to run at roughly 4.3 MHz minimum to keep up with the throughput; a 10 MHz SPI clock gives margin for framing overhead. ## Supply rails and reference — dual-voltage flexibility The analog and digital supplies both accept 5 V, with the analog rail also tolerating a -10.8 V to 15.75 V range — this second negative supply lets the ADC handle bipolar input signals without external level shifting. The reference can be either external or internal, giving the designer control over the full-scale range: an external precision reference improves gain accuracy and temperature drift, while the internal reference simplifies the BOM for single-supply systems. ## Industrial temperature grade and SOIC-16 footprint Tube packaging means the parts arrive in anti-static tubes of 48 or 50, suitable for hand-assembly or low-volume pick-and-place.","metaTitle":"MAX121EWE+ ADC, 14-Bit SAR, 308k SPS, 16-SOIC","metaDescription":"Analog Devices MAX121EWE+ 14-bit SAR ADC, 308k samples/sec, single-ended input, SPI interface, 16-SOIC. Active production, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Input Type":"Single Ended","Architecture":"SAR","Configuration":"S/H-ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"14","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","Reference Type":"External, Internal","Ratio - S/H:ADC":"1:1","lifecycle_stage":"eol_hot","Number of Inputs":"1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"16-SOIC","Number of A/D Converters":"1","Voltage - Supply, Analog":"5V, -10.8V ~ 15.75V","Voltage - Supply, Digital":"5V, -10.8V ~ 15.75V","Sampling Rate (Per Second)":"308k"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$39.56","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$39.56000","currency":"USD"},{"qty":10,"price":"$36.90500","currency":"USD"},{"qty":25,"price":"$35.35800","currency":"USD"},{"qty":100,"price":"$32.04330","currency":"USD"},{"qty":250,"price":"$30.93832","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the sampling rate and resolution of the MAX121EWE+?","answer":"The MAX121EWE+ is a 14-bit SAR ADC with a sampling rate of 308k samples per second. It accepts a single-ended input via an SPI interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX121EWE","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX121EWE 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}}