{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT1638CDD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT1638CDD~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LT1638CDD~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LT1638CDD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT1638CDD#PBF dual general-purpose op-amp, 1.2 MHz gain-bandwidth, 0.4 V/µs slew rate, rail-to-rail output, 8-WFDFN exposed pad package, tube.","salesMarkdown":"## 1.2 MHz GBW, 205 µA per channel — where the parametric trade-off lands The LT1638CDD#PBF is a dual general-purpose op-amp from Analog Devices with a 1.2 MHz gain-bandwidth product and a 0.4 V/µs slew rate. The supply current per channel is 205 µA — low enough to run continuously on a battery-powered sensor board, but the 1.2 MHz GBW means the usable closed-loop bandwidth at a gain of 10 is about 120 kHz. For a 20 kHz audio path or a 10 kHz control loop that is plenty; for a 500 kHz switching-regulator error amplifier it is too slow. The rail-to-rail output stage swings within a few millivolts of the supply rails, which eliminates the need for a negative rail in single-supply designs. With a supply span from 2.5 V to 44 V, the same part can run off a 3.3 V logic rail or a 24 V industrial bus without a level translator. ## Package, temperature grade, and what they mean for the board The part comes in an 8-WFDFN with an exposed pad (3x3 mm DFN). The exposed pad must be soldered to a ground-plane copper island to achieve the rated thermal performance — without it, the junction temperature rises faster under the 40 mA output load per channel. The supplier device package is 8-DFN (3x3), so the footprint and stencil aperture should match the Linear Technology / Analog Devices DFN-8 land pattern. The operating temperature range is -40°C to 85°C, which covers industrial enclosures, outdoor telecom cabinets, and HVAC equipment but not under-hood automotive or engine-bay environments. ROHS3 compliance means the part is free of the six restricted substances plus four phthalates — it ships into EU markets without a RoHS exemption claim. ## Active lifecycle — no EOL watch needed for this BOM line The LT1638CDD#PBF carries an active lifecycle status from Analog Devices. For a production BOM this means the part is still in the manufacturer's standard portfolio and can be sourced through authorized distribution channels without a time-bomb date. Because the part is active and the package is a standard DFN-8, the supply chain is stable. The tube packaging is the standard shipping format for this variant — if your pick-and-place line prefers tape-and-reel, check whether the reel suffix exists for this code or if a tube-to-reel transfer is needed at the CM.","metaTitle":"LT1638CDD#PBF Analog Devices Dual Op-Amp, 1.2 MHz","metaDescription":"LT1638CDD#PBF dual general-purpose op-amp from Analog Devices. 1.2 MHz GBW, 0.4 V/µs slew rate, rail-to-rail output, 205 µA supply per channel. Active, ROHS3.","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":"0.4V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Surface Mount","Amplifier Type":"General Purpose","Package / Case":"8-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Supply":"205µA (x2 Channels)","Number of Circuits":"2","Current - Input Bias":"20 nA","Operating Temperature":"-40°C ~ 85°C","Gain Bandwidth Product":"1.2 MHz","Voltage - Input Offset":"450 µV","Supplier Device Package":"8-DFN (3x3)","Current - Output / Channel":"40 mA","Voltage - Supply Span (Max)":"44 V","Voltage - Supply Span (Min)":"2.5 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.62","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.62000","currency":"USD"},{"qty":10,"price":"$6.88300","currency":"USD"},{"qty":25,"price":"$6.56240","currency":"USD"},{"qty":100,"price":"$5.69810","currency":"USD"},{"qty":250,"price":"$5.44204","currency":"USD"},{"qty":500,"price":"$4.96186","currency":"USD"},{"qty":1000,"price":"$4.53000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for LT1638CDD#PBF — does ADA4691-2ACPZ-R7 drop in?","answer":"The ADA4691-2ACPZ-R7 is a dual rail-to-rail op-amp with a 3.6 MHz GBW and 1.3 V/µs slew rate, but it runs on a 2.7 V maximum supply — it cannot handle the LT1638's 44 V supply span. The AD8622ARZ-REEL runs on 5.0 V max and the AD8629ARMZ is a zero-drift type on 2.7 V. None of these are pin-compatible or supply-rail drop-in replacements for the LT1638CDD#PBF. The LT1638's wide supply range (2.5 V to 44 V) is the defining parametric that sets it apart from these peers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT1638CDD~4PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT1638CDD~4PBF 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}}