{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1804U-100+T&R","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1804U-100TR","canonicalUrl":"https://icboms.com/analog-devices/DS1804U-100TR","factsUrl":"https://icboms.com/api/mcp/products/DS1804U-100%2BT%26R","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated DS1804U-100+T&R, digital potentiometer IC, 100kΩ resistance, 100 taps, linear taper, non-volatile memory, Up/Down interface, 2.7V to 5.5V supply, -40°C to 85°C, 8-uMAX/uSOP package.","salesMarkdown":"## 100 taps, 100 kΩ, linear — the trim pot for production calibration The Maxim Integrated DS1804U-100+T&R is a single-channel, non-volatile digital potentiometer with 100 tap positions and a linear taper over a 100 kΩ end-to-end resistance. It stores the wiper setting in non-volatile memory, so the calibration holds through a power cycle without a microcontroller intervention or external EEPROM. The three-wire Up/Down interface (U/D, INC, CS) is straightforward for a firmware engineer to drive from any GPIO bank — no SPI or I²C bus required, which saves pins on a small MCU. The 2.7 V to 5.5 V supply range covers 3.3 V and 5 V logic rails commonly found in industrial sensor transmitters, programmable power supplies, and audio gain stages. ## Wiper resistance and temperature drift — the hidden limits The wiper resistance is 400 Ω typical, which adds a fixed series offset at the wiper terminal. In a voltage-divider configuration that offset is negligible, but in rheostat mode (wiper to one end) the minimum resistance is 400 Ω, not zero — a detail that matters when setting a low-impedance bias point. The temperature coefficient is 750 ppm/°C typical, so a 100 kΩ setting drifts about 75 Ω per degree. For a room-temperature trim that is fine; for a -40°C to 85°C span the drift can shift the set point by several percent, so budget the tolerance (±20%) plus the tempco in the system error analysis. ## Active production, RoHS3, and the 8-uMAX footprint The DS1804U-100+T&R carries an Active product status and is ROHS3 compliant. The 8-uMAX/uSOP package (3.00 mm width, 0.118\" pitch) is a common footprint shared with the DS1804-050 and other 8-pin digital pots from Maxim, so a board layout can accommodate multiple resistance values on the same pad pattern. Cut Tape (CT) is also available for prototype quantities. ## Sourcing and BOM fit This part is sourced through independent distribution and quoted to order against an RFQ. The DS1804U-050 variant offers 50 kΩ end-to-end resistance with the same tap count and interface, useful when a lower impedance range is needed without changing the PCB layout.","metaTitle":"DS1804U-100+T&R Digital Potentiometer, 100kΩ, 100 Taps","metaDescription":"Maxim DS1804U-100+T&R digital potentiometer IC, 100kΩ resistance, 100 taps, linear taper, non-volatile, -40°C to 85°C, 8-uMAX/uSOP. Active, RoHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Taper":"Linear","Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"Up/Down (U/D, INC, CS)","Tolerance":"±20%","Memory Type":"Non-Volatile","Configuration":"Potentiometer","Mounting Type":"Surface Mount","Number of Taps":"100","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 5.5V","Resistance (Ohms)":"100k","Number of Circuits":"1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-uMAX/uSOP","Temperature Coefficient (Typ)":"750ppm/°C","Resistance - Wiper (Ohms) (Typ)":"400"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.66","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.66000","currency":"USD"},{"qty":10,"price":"$4.18300","currency":"USD"},{"qty":25,"price":"$3.95400","currency":"USD"},{"qty":100,"price":"$3.42690","currency":"USD"},{"qty":250,"price":"$3.25120","currency":"USD"},{"qty":500,"price":"$2.91728","currency":"USD"},{"qty":1000,"price":"$2.46036","currency":"USD"},{"qty":3000,"price":"$2.33734","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/56d895d291ba13a030ade422b65102e0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between DS1804U-100 and DS1804U-050?","answer":"Both are 100-tap, linear-taper digital potentiometers in the same 8-uMAX package with the same Up/Down interface. The DS1804U-100 is 100 kΩ end-to-end; the DS1804U-050 is 50 kΩ. The lower resistance variant suits lower-impedance divider networks or higher current bias trims, while the 100 kΩ version is the standard choice for voltage-divider and sensor offset adjustments."},{"question":"Can DS1804U-100+T&R be used as a rheostat?","answer":"Yes, by connecting the wiper to one end terminal (e.g., H to W) and using the other end (L) as the variable resistance. Note the 400 Ω typical wiper resistance sets the minimum value, so the effective range is 400 Ω to 100 kΩ. The linear taper and 100-tap resolution give about 1 kΩ per step in rheostat mode."},{"question":"Is DS1804U-100+T&R RoHS compliant?","answer":"Yes, it is ROHS3 compliant per the manufacturer's status."},{"question":"Can I replace DS1804U-100+T&R with DS1804U-100+?","answer":"Yes. The DS1804U-100+ is the same die and electrical specification — 100 kΩ, 100 taps, linear taper, non-volatile — in the same 8-uMAX package. The only difference is the packaging medium: the +T&R suffix is Tape & Reel for automated assembly; the + suffix is tube. Both are electrically identical and footprint-compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1804U-100TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1804U-100TR 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}}