{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC2378IDE-18#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC2378IDE-18~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC2378IDE-18~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC2378IDE-18%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC2378IDE-18#PBF, 18-bit SAR ADC, 1 Msps, differential input, SPI, 16-WFDFN exposed pad, tube, -40 to 85°C.","salesMarkdown":"## 18-bit SAR ADC in a 4x3 mm DFN — what the package and pinout mean for the board The LTC2378IDE-18#PBF is an 18-bit successive-approximation-register (SAR) ADC from Analog Devices, sampling at 1 Msps with a single differential input. The 16-lead WFDFN with exposed pad (4x3 mm) is the kind of package a rework tech can handle with hot air if the board layout gives the pad room — the exposed paddle needs a solid thermal via array under it to pull heat away from the die during conversion bursts. ## 1 Msps throughput with external reference — the signal chain fit At 1 Msps the SAR core needs a clean 2.375 V to 2.625 V analog supply and a separate digital rail in the same range — both rails should be low-noise LDOs, not switching regulators, because the internal comparator sees every ripple as a conversion error. The external reference (not included on-chip) sets the full-scale range; a 2.5 V reference like the ADR4525 gives a 5 Vpp differential input swing when the analog supply is 2.5 V. The SPI interface runs at up to 50 MHz typical for the serial clock, so the digital lines can be routed through a header or directly to a controller without a level shifter as long as the host side matches the 2.5 V logic level. The 1:1 S/H-to-ADC ratio means the sample-and-hold capacitor charges directly from the input during the acquisition phase — the source impedance driving the differential inputs should stay under 100 Ω to settle within 300 ns at 1 Msps.","metaTitle":"LTC2378IDE-18#PBF ADC, 18-bit SAR, 1 Msps, DFN-16","metaDescription":"Analog Devices LTC2378IDE-18#PBF 18-bit SAR ADC, 1 Msps, differential input, SPI interface, -40 to 85°C. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Input Type":"Differential","Architecture":"SAR","Configuration":"S/H-ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"18","Package / Case":"16-WFDFN Exposed Pad","Reference Type":"External","Ratio - S/H:ADC":"1:1","lifecycle_stage":"eol_hot","Number of Inputs":"1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"16-DFN (4x3)","Number of A/D Converters":"1","Voltage - Supply, Analog":"2.375V ~ 2.625V","Voltage - Supply, Digital":"2.375V ~ 2.625V","Sampling Rate (Per Second)":"1M"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$58.12","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$58.12000","currency":"USD"},{"qty":10,"price":"$54.59700","currency":"USD"},{"qty":25,"price":"$52.83560","currency":"USD"},{"qty":100,"price":"$49.84500","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Will LTC2378IDE-18#PBF drop into a board that was specified around AD7450ARZ without rewiring?","answer":"No. The AD7450ARZ is a 12-bit SAR ADC in an 8-lead SOIC package with a different pinout and a 2.7 V supply range. The LTC2378IDE-18#PBF is an 18-bit part in a 16-lead DFN with a 2.5 V supply — the footprint, resolution, and supply rails are all different, so a board spin is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC2378IDE-18~4PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC2378IDE-18~4PBF 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}}