{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"INA128UAG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"INA128UAG4","canonicalUrl":"https://icboms.com/texas-instruments/INA128UAG4","factsUrl":"https://icboms.com/api/mcp/products/INA128UAG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments INA128UAG4, precision instrumentation amplifier, single circuit, 4 V/µs slew rate, 1.3 MHz -3 dB bandwidth, 25 µV input offset, 8-SOIC package, -40 to 125 °C operating range.","salesMarkdown":"## Precision difference amplifier — 25 µV offset sets the floor The 25 µV input offset voltage defines the error floor for bridge, strain-gauge, and thermocouple conditioning — a standard op-amp would add an order of magnitude more offset and drift. The 1.3 MHz -3 dB bandwidth and 4 V/µs slew rate tell you this part is sized for industrial sensor frequencies, not video or RF. At a gain of 100, the bandwidth narrows to roughly 13 kHz — enough for most process-control loops but not for fast transient capture. The 2 nA input bias current keeps the voltage error across source impedance manageable even with 10 kΩ bridge resistors. ## Supply current and output drive — thermal budget check Quiescent supply current is 700 µA — light enough for multi-channel battery-powered data loggers. The 8-SOIC package dissipates that power without issue across the temperature range, but the copper pad area under the package sets the real thermal resistance. No official successor or second-source cross-reference is documented, so confirm the BOM position count before committing.","metaTitle":"INA128UAG4 Instrumentation Amplifier, 25 µV Offset","metaDescription":"Texas Instruments INA128UAG4 precision instrumentation amplifier: 25 µV input offset, 4 V/µs slew rate, 1.3 MHz bandwidth, 8-SOIC package, -40 to 125 °C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tube","Slew Rate":"4V/µs","Output Type":"-","Mounting Type":"Surface Mount","-3db Bandwidth":"1.3 MHz","Amplifier Type":"Instrumentation","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"700µA","Number of Circuits":"1","Base Product Number":"INA128","Current - Input Bias":"2 nA","Operating Temperature":"-40°C~125°C","Voltage - Input Offset":"25 µV","Supplier Device Package":"8-SOIC","Current - Output / Channel":"15 mA","Voltage - Supply Span (Max)":"36 V","Voltage - Supply Span (Min)":"4.5 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.7000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/38ef53acfab362c1f4307adc148d9e91.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/INA128UAG4/alternatives.json"},"ai":{"faq":[{"question":"Can INA128UAG4 be used in single-supply circuits?","answer":"Yes, the INA128UAG4 operates from a single supply as low as 4.5 V up to 36 V. In single-supply mode the input common-mode range shifts — the output can swing within about 1.5 V of the rails, so the reference pin should be biased to mid-supply for bipolar input signals."},{"question":"What is the closest pin-compatible alternative to INA128UAG4 in this component family?","answer":"The INA128UAG4 is the standard-grade version of the INA128 family. The INA128UA (without the G4 suffix) is functionally identical and pin-compatible — the G4 suffix indicates a RoHS-compliant, lead-free finish. Both share the same 8-SOIC footprint, offset spec, and bandwidth. No other pin-compatible second source is documented outside the TI family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/INA128UAG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/INA128UAG4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}