{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT1991CMS#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT1991CMSPBF","canonicalUrl":"https://icboms.com/analog-devices/LT1991CMSPBF","factsUrl":"https://icboms.com/api/mcp/products/LT1991CMS%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT1991CMS#PBF, Programmable Gain Amplifier, 1 Circuit, Rail-to-Rail Output, 560 kHz Gain Bandwidth, 0.12 V/µs Slew Rate, 2.7 V to 36 V Supply, 10-MSOP, Tube.","salesMarkdown":"## Programmable gain in a 10-MSOP — what the LT1991CMS#PBF brings to the board It combines a precision op-amp core with a resistor network that sets the gain through pin-strapping — no external resistors needed. Key characteristics include a 25 µV input offset, 2.5 nA input bias current, and a gain-bandwidth product of 560 kHz. The 560 kHz gain-bandwidth product sets the usable frequency range at a given closed-loop gain. At a gain of 100, the bandwidth drops to roughly 5.6 kHz — fine for DC or low-frequency sensor outputs (thermocouples, strain gauges, bridge circuits), but not for audio or fast data acquisition. The 0.12 V/µs slew rate limits large-signal response: a 10 V output step slews in about 83 µs. For applications that need to track fast transients or drive high-frequency signals, a wider-bandwidth PGA or a dedicated op-amp would be a better fit. The -3 dB bandwidth of 110 kHz confirms the part is optimised for precision, not speed. It is ROHS3 compliant.","metaTitle":"LT1991CMS#PBF Programmable Gain Amplifier, 560 kHz, 10-MSOP","metaDescription":"LT1991CMS#PBF single-channel PGA from Analog Devices. 25 µV offset, 0.12 V/µs slew rate, rail-to-rail output. 2.7 V to 36 V supply. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tube","Slew Rate":"0.12V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Surface Mount","-3db Bandwidth":"110 kHz","Amplifier Type":"Programmable Gain","Package / Case":"10-TFSOP, 10-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"130µA","Number of Circuits":"1","Current - Input Bias":"2.5 nA","Operating Temperature":"0°C ~ 70°C","Gain Bandwidth Product":"560 kHz","Voltage - Input Offset":"25 µV","Supplier Device Package":"10-MSOP","Current - Output / Channel":"21 mA","Voltage - Supply Span (Max)":"36 V","Voltage - Supply Span (Min)":"2.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.58","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.58000","currency":"USD"},{"qty":10,"price":"$4.11000","currency":"USD"},{"qty":25,"price":"$3.88600","currency":"USD"},{"qty":100,"price":"$3.36780","currency":"USD"},{"qty":250,"price":"$3.19512","currency":"USD"},{"qty":500,"price":"$2.86698","currency":"USD"},{"qty":1000,"price":"$2.41794","currency":"USD"},{"qty":2500,"price":"$2.29704","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/1991fh.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the LT1991CMS#PBF gain range and how do I set it?","answer":"The LT1991CMS#PBF is a programmable gain amplifier whose gain is set by pin-strapping internal resistor networks — no external resistors. The datasheet provides gain codes for common values; the exact gain range depends on the pin configuration chosen. For a given application, refer to the manufacturer's datasheet for the gain-setting table."},{"question":"Can LT1991CMS#PBF be used in single supply applications?","answer":"Yes. The supply voltage range of 2.7 V to 36 V covers single-supply rails like 3.3 V, 5 V, and 12 V. The rail-to-rail output allows the signal to swing close to the supply rails, which is important for driving an ADC or feeding a microcontroller input without level shifting."},{"question":"Does LT1991CMS#PBF have a pin-compatible replacement or equivalent?","answer":"The AD623BRZ is a single-supply instrumentation amplifier in an 8-MSOP package, but it is not pin-compatible with the 10-MSOP LT1991CMS#PBF. The ADA4096-2 is a dual general-purpose op-amp with a different pinout and function. For a functional equivalent, evaluate parts with similar gain-bandwidth, offset, and supply range in the same package footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT1991CMSPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT1991CMSPBF 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}}