{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM385BMX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM385BMX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM385BMX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM385BMX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM385BMX/NOPB, adjustable shunt voltage reference, 1.24V to 5.3V output, ±1% tolerance, 150ppm/°C, 20 mA output, 55 µA cathode current, 8-SOIC surface mount, 0°C to 70°C.","salesMarkdown":"## Adjustable shunt reference — 1.24 V to 5.3 V output span It covers an output range from 1.24 V minimum to 5.3 V maximum, set by two external resistors — no separate supply rail needed, just a bias current through the cathode. ## Current handling and bias budget Rated for 20 mA continuous output current, with a cathode current floor of 55 µA to maintain regulation. That 55 µA minimum bias is the design constraint: the series resistor feeding the reference must deliver at least that much current across the full input voltage range, plus whatever the load draws. Below that, the output drops out of regulation. ## Temperature drift and tolerance grade Specified at ±1% initial tolerance and a temperature coefficient of 150 ppm/°C. For a 2.5 V setpoint, that is about ±44 mV total variation. ## Noise floor Output noise is 50 µVrms integrated from 10 Hz to 10 kHz — typical for a low-power shunt reference. In a 12-bit ADC reference path with a 2.5 V full scale, that noise contributes roughly 0.2 LSB rms, acceptable for most general-purpose data acquisition.","metaTitle":"LM385BMX/NOPB Adjustable Shunt Voltage Reference, 1.24V-5.3V","metaDescription":"Texas Instruments LM385BMX/NOPB adjustable shunt voltage reference in 8-SOIC. Output range 1.24V to 5.3V, ±1% tolerance, 150ppm/°C drift.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±1%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"20 mA","Current - Supply":"-","Current - Cathode":"55 µA","Base Product Number":"LM385","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"50µVrms","Operating Temperature":"0°C~70°C(TA)","Voltage - Output (Max)":"5.3 V","Supplier Device Package":"8-SOIC","Temperature Coefficient":"150ppm/°C","Voltage - Output (Min/Fixed)":"1.24V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4199e8d59659e82b20c871ef2cbe4629.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM385BMX%2FNOPB/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM385BMX-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM385BMX-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}