{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1841N+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1841N","canonicalUrl":"https://icboms.com/analog-devices/DS1841N","factsUrl":"https://icboms.com/api/mcp/products/DS1841N%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DS1841N+ digital potentiometer, 22kOhm, 128 taps, logarithmic taper, I²C interface, non-volatile memory, 10-TDFN exposed pad package, surface mount.","salesMarkdown":"## Logarithmic taper digital pot with on-chip temperature sensor The DS1841N+ is a 22kOhm digital potentiometer with 128 taps and a logarithmic taper, packaged in a 10-TDFN exposed pad (3x3mm). The log taper makes it a natural fit for audio gain control or optical attenuation where the human ear or photodetector response is logarithmic, not linear. Non-volatile memory means the wiper position is retained at power-up without a host microcontroller re-initializing it each cycle — useful in set-and-forget bias or calibration circuits. ## Supply range, interface, and temperature sensor integration Operates from 2.7V to 5.5V and over -40°C to +100°C, covering the industrial temperature band. The I²C interface supports a selectable address, so multiple DS1841N+ devices can share the same bus without address conflicts. The on-chip temperature sensor allows the host to read die temperature over the same I²C bus — a feature that can compensate for the ±250ppm/°C temperature coefficient in precision attenuation applications. Tolerance is ±20% — the end-to-end resistance is specified loosely, but the ratiometric tap accuracy (the step-to-step matching) is typically tighter, which is what matters for the attenuation ratio. The exposed pad is also the ground connection. Supplied in tube packaging, surface-mount. The narrow 0.5mm pitch of the TDFN package means a solder stencil with appropriate aperture ratio is needed to avoid bridging during reflow. ## Lifecycle and compliance ROHS3 compliant, no exemptions that would complicate EU or UKCA market access. The DS1841N+ is a single-source part; a BOM hedge would require a board spin to a different package or pinout.","metaTitle":"DS1841N+ Analog Devices 22kOhm 128-Tap Log Taper Digital","metaDescription":"DS1841N+ from Analog Devices: 22kOhm digital pot, 128 taps, logarithmic taper, I²C interface with temperature sensor. Active, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Taper":"Logarithmic","Package":"Tube","Features":"Selectable Address, Temperature Sensor","Interface":"I²C","Tolerance":"±20%","Memory Type":"Non-Volatile","Configuration":"Potentiometer","Mounting Type":"Surface Mount","Number of Taps":"128","Package / Case":"10-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 5.5V","Resistance (Ohms)":"22k","Number of Circuits":"1","Operating Temperature":"-40°C ~ 100°C","Supplier Device Package":"10-TDFN (3x3)","Temperature Coefficient (Typ)":"±250ppm/°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.05","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.05000","currency":"USD"},{"qty":10,"price":"$2.74000","currency":"USD"},{"qty":25,"price":"$2.59080","currency":"USD"},{"qty":100,"price":"$2.24520","currency":"USD"},{"qty":250,"price":"$2.13008","currency":"USD"},{"qty":500,"price":"$1.91132","currency":"USD"},{"qty":1000,"price":"$1.61196","currency":"USD"},{"qty":2500,"price":"$1.53136","currency":"USD"},{"qty":5000,"price":"$1.47379","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the taper of the DS1841N+?","answer":"The DS1841N+ has a Logarithmic taper, meaning the resistance change per tap follows a logarithmic curve — suited for audio volume control or optical attenuator applications where the perception or response is logarithmic."},{"question":"What compliance documentation does Analog Devices provide for the DS1841N+?","answer":"Analog Devices provides ROHS3 compliance for the DS1841N+. No UL, IEC, or REACH documentation is listed in the available records."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1841N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1841N 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}}