{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AD7781BRUZ-REEL","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"AD7781BRUZ-REEL","canonicalUrl":"https://icboms.com/analog-devices/AD7781BRUZ-REEL","factsUrl":"https://icboms.com/api/mcp/products/AD7781BRUZ-REEL","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices AD7781BRUZ-REEL sigma-delta ADC, 20-bit, 16.7 SPS, PGA, differential input, SPI, 16-TSSOP, -40°C to 105°C.","salesMarkdown":"## 20-bit sigma-delta ADC with on-chip PGA The AD7781BRUZ-REEL is a 20-bit sigma-delta analog-to-digital converter from Analog Devices, integrating a programmable gain amplifier (PGA) ahead of the modulator for direct connection to low-level differential signals from bridge sensors, load cells, or thermocouples. With a sampling rate of 16.7 SPS, the on-chip digital filter settles to full resolution at that update rate — the output word rate is the same as the filter's first notch frequency, which also provides 50 Hz and 60 Hz rejection when the notch is placed at those line frequencies. The external reference input (REFIN) sets the analog input span; the reference voltage must be stable and low-noise because the 20-bit resolution resolves down to the sub-µV level per LSB at a 2.5 V reference. ## Package and interface Housed in a 16-lead TSSOP (4.40 mm body width, 0.65 mm pitch), the AD7781BRUZ-REEL fits a compact PCB footprint — the 0.65 mm pitch routes out on a two-layer board with standard trace widths. The SPI data interface uses four wires (SCLK, DIN, DOUT, CS) and operates up to several MHz, though the output data rate is capped at 16.7 SPS by the internal filter — the SPI bus is used to read conversion results and write configuration registers, not to clock out raw modulator data. Available in Tape & Reel (TR) or Cut Tape (CT) for pick-and-place assembly; the REEL suffix indicates reel packaging for automated production lines. ROHS3 compliant with no exemptions; the part ships lead-free and meets the EU RoHS directive for unrestricted global distribution.","metaTitle":"Analog Devices AD7781BRUZ-REEL Sigma-Delta ADC, 20-Bit","metaDescription":"Analog Devices AD7781BRUZ-REEL 20-bit sigma-delta ADC, 16.7 SPS, PGA, differential input, SPI, 16-TSSOP. 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":"Tape & Reel (TR); Cut Tape (CT)","Features":"PGA","Input Type":"Differential","Architecture":"Sigma-Delta","Configuration":"PGA-ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"20","Package / Case":"16-TSSOP (0.173\\\", 4.40mm Width)","Reference Type":"External","lifecycle_stage":"eol_hot","Number of Inputs":"1","Operating Temperature":"-40°C ~ 105°C","Supplier Device Package":"16-TSSOP","Number of A/D Converters":"1","Voltage - Supply, Analog":"2.7V ~ 5.25V","Voltage - Supply, Digital":"2.7V ~ 5.25V","Sampling Rate (Per Second)":"16.7"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.67","stockQuantity":20,"priceTiers":[{"qty":1,"price":"$11.67000","currency":"USD"},{"qty":10,"price":"$10.72100","currency":"USD"},{"qty":25,"price":"$10.27680","currency":"USD"},{"qty":100,"price":"$9.05460","currency":"USD"},{"qty":250,"price":"$8.61024","currency":"USD"},{"qty":500,"price":"$8.05476","currency":"USD"},{"qty":1000,"price":"$7.38815","currency":"USD"},{"qty":2500,"price":"$7.11040","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5dc0e6f5901c2bea7dd6e923befabda6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the sampling rate and resolution of the AD7781BRUZ-REEL?","answer":"The AD7781BRUZ-REEL is a 20-bit sigma-delta ADC with a sampling rate of 16.7 samples per second. The output data rate equals the filter notch frequency, which also provides rejection of 50 Hz and 60 Hz line noise."},{"question":"Does the AD7781BRUZ-REEL include a programmable gain amplifier?","answer":"Yes, the AD7781BRUZ-REEL integrates a PGA (programmable gain amplifier) as part of its PGA-ADC configuration, enabling direct conditioning of low-level differential signals from sensors like load cells and strain gauges."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/AD7781BRUZ-REEL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/AD7781BRUZ-REEL when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}