{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1859B-050+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1859B-050","canonicalUrl":"https://icboms.com/analog-devices/DS1859B-050","factsUrl":"https://icboms.com/api/mcp/products/DS1859B-050%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DS1859B-050+ digital potentiometer, dual 50kOhm rheostat, 256 taps, linear taper, I2C interface, non-volatile memory, 16-CSBGA package.","salesMarkdown":"## Dual 50k linear rheostat with I2C and non-volatile storage The DS1859B-050+ is a dual-channel digital rheostat from Analog Devices, configured as two independent 50 kOhm variable resistors with 256 tap positions each, giving roughly 195 ohms per step resolution on a linear taper. The wiper position is stored in non-volatile memory, so the resistance setting survives power cycling — no need to re-initialize at every power-up. An on-chip temperature sensor and selectable I2C address let you read the die temperature over the same bus, reducing component count in a calibration or bias-adjustment loop. ## Package and supply considerations for layout The ±20 % resistance tolerance is typical for digital pots — the end-to-end value can vary by 10 kOhm from part to part, so the design should rely on the ratiometric tap accuracy, not the absolute resistance, for calibration. ## Temperature range and drift Rated for -40 °C to +95 °C operation, the DS1859B-050+ fits industrial enclosures and outdoor telecom cabinets where the ambient stays below 85 °C. The 50 ppm/°C temperature coefficient means the 50 kOhm end-to-end resistance drifts about 2.5 ohms per degree — negligible for most bias and trim circuits, but worth derating if the application spans the full -40 to +95 °C range. ## Lifecycle and compliance status RoHS3 compliant (2011/65/EU + 2015/863), with no restricted substances in the BOM.","metaTitle":"DS1859B-050+ Digital Potentiometer 50kOhm 256-Tap I2C CSBGA","metaDescription":"DS1859B-050+ from Analog Devices: dual 50kOhm digital rheostat, 256 taps, linear taper, I2C interface, non-volatile, -40 to +95°C. Active production, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Taper":"Linear","Package":"Tray","Features":"Selectable Address, Temperature Sensor","Interface":"I²C","Tolerance":"±20%","Memory Type":"Non-Volatile","Configuration":"Rheostat","Mounting Type":"Surface Mount","Number of Taps":"256","Package / Case":"16-LBGA, CSPBGA","lifecycle_stage":"eol_hot","Voltage - Supply":"2.85V ~ 5.5V","Resistance (Ohms)":"50k","Number of Circuits":"2","Operating Temperature":"-40°C ~ 95°C","Supplier Device Package":"16-CSBGA (4x4)","Temperature Coefficient (Typ)":"50ppm/°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.42","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.42000","currency":"USD"},{"qty":10,"price":"$8.51200","currency":"USD"},{"qty":25,"price":"$8.11640","currency":"USD"},{"qty":80,"price":"$7.04738","currency":"USD"},{"qty":230,"price":"$6.73065","currency":"USD"},{"qty":810,"price":"$6.13677","currency":"USD"},{"qty":1620,"price":"$5.34492","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the taper of the DS1859B-050+?","answer":"The DS1859B-050+ uses a linear taper — each tap step changes the resistance by the same amount, unlike audio-taper pots that use a logarithmic curve."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1859B-050","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1859B-050 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}}