{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP6S91T-E/SN","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP6S91T-E-SN","canonicalUrl":"https://icboms.com/microchip/MCP6S91T-E-SN","factsUrl":"https://icboms.com/api/mcp/products/MCP6S91T-E%2FSN","rawCanonicalId":null},"summary":{"shortDescription":"Microchip MCP6S91T-E/SN, single programmable gain amplifier, 18 MHz -3dB bandwidth, 22 V/µs slew rate, rail-to-rail output, 2.5 V to 5.5 V supply, 8-SOIC, -40 to 125 °C.","salesMarkdown":"## Programmable gain without the resistor network The Microchip MCP6S91T-E/SN is a single-channel programmable gain amplifier (PGA) that replaces the traditional op-amp plus external resistor-ladder gain-setting circuit. It integrates an SPI-programmable gain stage with eight selectable gain settings, eliminating the need for precision feedback resistors and reducing board area. The amplifier delivers an 18 MHz -3dB bandwidth and a 22 V/µs slew rate, making it suitable for multiplexed analog inputs, data acquisition front-ends, and sensor signal conditioning where gain must be adjusted dynamically or set per channel. Input bias current is 1 pA typical, which minimizes offset errors when driving high-impedance sensors such as photodiodes or pH probes. ## Supply current and output drive Quiescent supply current is 1 mA typical, which keeps the thermal budget low in densely populated boards. Each channel can source or sink 25 mA, enough to drive a 2 kΩ load to within 100 mV of the rails or to charge a small sampling capacitor in a downstream ADC. Input offset voltage is 400 µV maximum, a figure that matters when the PGA is set to high gain because the offset is multiplied by the gain setting. For a design that relies on programmable gain in a single 8-SOIC footprint, this part is a stable BOM line without forced-migration risk.","metaTitle":"MCP6S91T-E/SN Programmable Gain Op-Amp, 18 MHz, 22 V/µs","metaDescription":"Microchip MCP6S91T-E/SN single programmable gain amplifier, 18 MHz bandwidth, 22 V/µs slew rate, rail-to-rail output, 2.5-5.5 V supply, -40 to 125 °C.","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)","Slew Rate":"22V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Surface Mount","-3db Bandwidth":"18 MHz","Amplifier Type":"Programmable Gain","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"1mA","Number of Circuits":"1","Current - Input Bias":"1 pA","Operating Temperature":"-40°C ~ 125°C","Voltage - Input Offset":"400 µV","Supplier Device Package":"8-SOIC","Current - Output / Channel":"25 mA","Voltage - Supply Span (Max)":"5.5 V","Voltage - Supply Span (Min)":"2.5 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.18","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.18000","currency":"USD"},{"qty":25,"price":"$0.96480","currency":"USD"},{"qty":100,"price":"$0.91500","currency":"USD"},{"qty":3300,"price":"$0.91500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c1cbd2d8ad3cff971d80e361e6f50026.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the MCP6S91T-E/SN rail-to-rail output?","answer":"Yes, the output stage is rail-to-rail. The input common-mode range is not rail-to-rail, so the input signal must stay within the supply rails. The output can swing to within a few millivolts of both VSS and VDD under light loads."},{"question":"What is the bandwidth of MCP6S91T-E/SN?","answer":"The -3dB bandwidth is 18 MHz. This is the small-signal bandwidth at unity gain. At higher gain settings the bandwidth scales down inversely with the gain, per the gain-bandwidth product of the amplifier."},{"question":"What is an equivalent for MCP6S91T-E/SN?","answer":"The closest functional equivalent in the same package is the MCP6V91UT-E/OT, a zero-drift PGA with 10 MHz bandwidth and 9.5 V/µs slew rate. It trades some speed for lower input offset (9 µV typical) and is offered in a smaller SOT-23-5 package. For a general-purpose fixed-gain alternative, the MCP6291T-E/MS provides 10 MHz bandwidth and 7 V/µs slew rate in an MSOP-8, but lacks the programmable gain feature."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP6S91T-E-SN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP6S91T-E-SN 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}}