{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADS1256IDBRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ADS1256IDBRG4","canonicalUrl":"https://icboms.com/texas-instruments/ADS1256IDBRG4","factsUrl":"https://icboms.com/api/mcp/products/ADS1256IDBRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ADS1256IDBRG4, 24-bit Sigma-Delta ADC, 30 kSPS, SPI, PGA, 8-channel differential/single-ended, 5V analog / 1.8V-3.6V digital, -40°C~85°C, 28-SSOP, Tape & Reel.","salesMarkdown":"## Precision measurement ADC with on-chip PGA The Texas Instruments ADS1256IDBRG4 is a 24-bit sigma-delta ADC designed for precision measurement applications that demand low noise and high resolution. Its architecture combines a multiplexer, a programmable gain amplifier (PGA), and the ADC core in a single 28-SSOP package, making it a fit for weigh scales, strain-gauge transducers, pressure sensors, and industrial process control loops where the signal amplitude varies across channels. ## 30 kSPS data rate — what it buys you The 30 kSPS maximum sampling rate sets the upper bound for per-channel throughput. In a multiplexed system scanning all 8 single-ended inputs, each channel sees roughly 3.75 kSPS — fast enough for DC or slowly varying signals like temperature, pressure, or load cells, but not for audio or vibration monitoring. The sigma-delta modulator oversamples the input, so the digital filter settles in a few conversion cycles; expect a 50 Hz or 60 Hz notch filter to be implemented in the host microcontroller's firmware for line-frequency rejection. ## Supply rails and reference planning The external reference (REF+ / REF-) must be a low-drift precision source — the ADC's noise floor is set by the reference, not the converter. A 2.5 V or 5 V reference with under 3 ppm/°C drift is typical for 24-bit systems. The split supply means the board needs two voltage domains; a single LDO feeding both rails will couple digital switching noise into the analog section, so plan for separate regulators or a post-filter on the analog rail. ## Input configuration and PGA gain staging The MUX-PGA-ADC configuration supports 4 differential or 8 single-ended inputs. The PGA provides gain from 1 to 64 in binary steps, letting the user amplify millivolt-level sensor outputs before conversion. At gain 64, the full-scale input range is roughly ±39 mV with a 5 V reference — useful for bridge-type sensors. The differential input mode rejects common-mode noise from long cable runs, which is the typical hookup in industrial panel wiring. The input multiplexer is break-before-make, so channel-to-channel crosstalk is limited to the charge injection from the switch capacitance.","metaTitle":"TI ADS1256IDBRG4 24-Bit Sigma-Delta ADC, 30 kSPS, SSOP-28","metaDescription":"Texas Instruments ADS1256IDBRG4 24-bit sigma-delta ADC with PGA, 30 kSPS sampling rate, SPI interface, 28-SSOP package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Features":"PGA","Input Type":"Differential, Single Ended","Architecture":"Sigma-Delta","Configuration":"MUX-PGA-ADC","Mounting Type":"Surface Mount","Data Interface":"SPI","Number of Bits":"24","Package / Case":"28-SSOP (0.209\\\", 5.30mm Width)","Reference Type":"External","Ratio - S/H:ADC":"-","lifecycle_stage":"eol_hot","Number of Inputs":"4, 8","Base Product Number":"ADS1256","Operating Temperature":"-40°C~85°C","Supplier Device Package":"28-SSOP","Number of A/D Converters":"1","Voltage - Supply, Analog":"5V","Voltage - Supply, Digital":"1.8V ~ 3.6V","Sampling Rate (Per Second)":"30k"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/63bebeea41a62d0fa4265864be01e5cb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum data rate of the ADS1256IDBRG4?","answer":"The ADS1256IDBRG4 samples at a maximum rate of 30 kSPS. This is the throughput for a single channel; when scanning multiple inputs through the multiplexer, the per-channel rate divides by the number of active channels."},{"question":"Does the ADS1256IDBRG4 require an external reference?","answer":"Yes, the reference type is external. A precision voltage reference must be connected to the REF+ and REF- pins — the ADC does not include an internal bandgap reference. The reference voltage sets the full-scale input range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ADS1256IDBRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ADS1256IDBRG4 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}}