{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"OPA445ADDA","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"OPA445ADDA","canonicalUrl":"https://icboms.com/texas-instruments/OPA445ADDA","factsUrl":"https://icboms.com/api/mcp/products/OPA445ADDA","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments OPA445ADDA, General Purpose Amplifier, 1 Circuit, 2 MHz Gain Bandwidth, 15 V/µs Slew Rate, 20 V to 90 V Supply, 8-PowerSOIC, Surface Mount, Tube.","salesMarkdown":"## High-voltage op-amp for industrial signal chains The OPA445ADDA is a single-channel general-purpose operational amplifier from Texas Instruments, built for circuits that need to swing signals across a 20 V to 90 V supply span — think piezo drivers, solenoid controls, or precision analog front-ends in factory automation where the rail is 48 V or 72 V. ## What the key ratings mean for your BOM A 2 MHz gain-bandwidth product and 15 V/µs slew rate mean this op-amp handles 100 kHz+ signals at full output swing without slew-rate limiting — the 15 V/µs figure is the rate the output can change, so a 50 Vpp sine at 100 kHz needs about 15.7 V/µs, which is right at the edge; for that amplitude, keep the frequency below 95 kHz or accept some distortion. Input bias current is 10 pA typical and input offset voltage is 1.5 mV — the bias is low enough for high-impedance sensors like photodiodes or pH probes, but the 1.5 mV offset means you should budget a trim or use a higher-grade part if the application needs sub-mV DC accuracy. Output drive is 15 mA per channel — enough to swing a 2.5 V signal into a 166 Ω load, but not for driving a 50 Ω transmission line directly; plan a buffer stage for 50 Ω backplanes. Quiescent supply current is 4.2 mA — reasonable for a high-voltage part; it is not a micropower device, so keep this in the power budget for multi-channel boards. ## Package and thermal — the PowerPad matters The 8-PowerSOIC package (8-SO PowerPad) has an exposed thermal pad on the bottom — the datasheet's thermal resistance drops significantly when the pad is soldered to a copper plane on the PCB. Without that plane, the part derates faster; with a 1 in² copper pour, the junction-to-ambient resistance is roughly half of the free-air value. Operating temperature range is -25°C to 85°C — this is the industrial band, not extended industrial (-40°C). If the enclosure sees -30°C startup, this part is out of spec; choose the OPA445A or a -40°C rated alternative.","metaTitle":"Texas Instruments OPA445ADDA Op-Amp, 90V Supply, 2 MHz","metaDescription":"Texas Instruments OPA445ADDA general-purpose op-amp, single circuit, 2 MHz GBW, 15 V/µs slew rate, 20-90 V supply. Active, RoHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Tube","Slew Rate":"15V/µs","Mounting Type":"Surface Mount","Amplifier Type":"General Purpose","Package / Case":"8-PowerSOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"4.2mA","Number of Circuits":"1","Current - Input Bias":"10 pA","Operating Temperature":"-25°C ~ 85°C","Gain Bandwidth Product":"2 MHz","Voltage - Input Offset":"1.5 mV","Supplier Device Package":"8-SO PowerPad","Current - Output / Channel":"15 mA","Voltage - Supply Span (Max)":"90 V","Voltage - Supply Span (Min)":"20 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.28","priceTiers":[{"qty":1,"price":"$12.28000","currency":"USD"},{"qty":10,"price":"$11.28900","currency":"USD"},{"qty":25,"price":"$10.82080","currency":"USD"},{"qty":100,"price":"$9.53400","currency":"USD"},{"qty":250,"price":"$9.06608","currency":"USD"},{"qty":500,"price":"$8.48116","currency":"USD"},{"qty":1000,"price":"$8.27700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c35d9bdec1a66535195d3b7c1e545989.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/OPA445ADDA/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy OPA445ADDA?","answer":"OPA445ADDA is sourced and quoted to order through independent distribution. Submit an RFQ for current pricing and availability — no stock numbers on this page, but the part is actively produced and the supply channel is open."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/OPA445ADDA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/OPA445ADDA 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}}