{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REF191FS","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"REF191FS","canonicalUrl":"https://icboms.com/analog-devices/REF191FS","factsUrl":"https://icboms.com/api/mcp/products/REF191FS","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices REF19 series, REF191FS, fixed 2.048V output, ±0.24% tolerance, 10ppm/°C temperature coefficient, 30mA output current, 45µA supply current, 8-SOIC surface-mount package, -40°C to 85°C operating temperature.","salesMarkdown":"## Precision 2.048 V reference for industrial and instrumentation rails The REF191FS from Analog Devices is a fixed-output series voltage reference delivering 2.048 V with ±0.24% initial accuracy. The series topology means it regulates from an input up to 18 V and can source up to 30 mA to external loads — enough to drive multiple converter reference inputs or a resistive bridge. RoHS compliance is listed as non-compliant, which matters for designs requiring full RoHS exemption — verify your assembly's exemption allowance if this is a concern.","metaTitle":"REF191FS Voltage Reference, 2.048V Fixed, 10ppm/°C","metaDescription":"REF191FS series voltage reference from Analog Devices: fixed 2.048V output, ±0.24% tolerance, 10ppm/°C drift, 30mA output, 8-SOIC. Active lifecycle.","metaKeywords":null},"attributes":{"series":"REF19","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"REF19","Package":"Bulk","Tolerance":"±0.24%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Reference Type":"Series","Voltage - Input":"18V","lifecycle_stage":"eol_hot","Current - Output":"30 mA","Current - Supply":"45µA","Noise - 0.1Hz to 10Hz":"20µVp-p","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Temperature Coefficient":"10ppm/°C","Voltage - Output (Min/Fixed)":"2.048V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.05","priceTiers":[{"qty":75,"price":"$4.05000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f80a9dfd790aa0808af6b0c194f79d2c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/REF191FS/alternatives.json"},"ai":{"faq":[{"question":"What are the key differences between REF191FS and REF192FS?","answer":"The REF191FS outputs 2.048 V, while the REF192FS outputs 2.5 V. Both share the same REF19 series architecture, 10 ppm/°C drift, 30 mA output, and 8-SOIC package — the choice is driven by the required reference voltage for the ADC or DAC range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/REF191FS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/REF191FS when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}