{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AD7764BRUZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"AD7764BRUZ","canonicalUrl":"https://icboms.com/analog-devices/AD7764BRUZ","factsUrl":"https://icboms.com/api/mcp/products/AD7764BRUZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices AD7764BRUZ, 24-bit sigma-delta ADC, 312 kSPS, differential input, SPI, external reference, 2.5V/5V analog supply, 2.5V digital supply, -40°C to 85°C, 28-TSSOP.","salesMarkdown":"## 24-bit sigma-delta ADC at 312 kSPS — precision data acquisition workhorse It communicates over an SPI interface and requires an external voltage reference. The device operates from a dual analog supply of 2.5 V and 5 V, with a separate 2.5 V digital supply. At 312 kSPS, this ADC can digitize a 100 kHz bandwidth signal with adequate oversampling for anti-alias filter relaxation. The 24-bit resolution delivers a theoretical dynamic range of about 146 dB, though practical noise performance depends on the external reference and analog supply cleanliness. For a three-phase motor current sensing application, one AD7764BRUZ per phase with a multiplexed reference covers the bandwidth and accuracy requirements. ## Differential input and external reference — layout and drive considerations The differential input architecture rejects common-mode noise from the sensor or signal chain, but it requires a balanced driver — a single-ended source needs an op-amp stage to convert to differential before the ADC. The external reference pin lets you set the full-scale range independently; a low-noise reference like the ADR4550 matches the 24-bit noise floor. The 28-TSSOP footprint is a standard 4.4 mm wide body, so the layout fits a two-layer board with a solid ground plane under the analog section. It is ROHS3 compliant.","metaTitle":"AD7764BRUZ 24-Bit Sigma-Delta ADC, 312 kSPS, 28-TSSOP","metaDescription":"ADI AD7764BRUZ 24-bit sigma-delta ADC, 312 kSPS sampling rate, differential input, SPI interface, -40°C to 85°C, 28-TSSOP. Active product, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tube","Input Type":"Differential","Architecture":"Sigma-Delta","Configuration":"ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"24","Package / Case":"28-TSSOP (0.173\\\", 4.40mm Width)","Reference Type":"External","lifecycle_stage":"eol_hot","Number of Inputs":"1","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"28-TSSOP","Number of A/D Converters":"1","Voltage - Supply, Analog":"2.5V, 5V","Voltage - Supply, Digital":"2.5V","Sampling Rate (Per Second)":"312k"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$28.79","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$28.79000","currency":"USD"},{"qty":10,"price":"$26.55400","currency":"USD"},{"qty":50,"price":"$25.36000","currency":"USD"},{"qty":100,"price":"$22.67490","currency":"USD"},{"qty":250,"price":"$21.63068","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/AD7764.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy AD7764BRUZ and what is the price?","answer":"The AD7764BRUZ is available to order through independent distribution."},{"question":"What are the alternatives to AD7764BRUZ?","answer":"No official pin-compatible second source is listed. For a parametric alternative, consider the AD7765BRUZ which offers a similar 24-bit sigma-delta core but with a different sampling rate and power profile — verify footprint and register compatibility before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/AD7764BRUZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/AD7764BRUZ when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}