{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX4721EUA+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX4721EUAT","canonicalUrl":"https://icboms.com/analog-devices/MAX4721EUAT","factsUrl":"https://icboms.com/api/mcp/products/MAX4721EUA%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX4721EUA+T dual SPST-NO analog switch, 4.5 Ohm on-resistance, 300 MHz bandwidth, -110 dB crosstalk, 8-uMAX/uSOP package, Tape & Reel.","salesMarkdown":"## On-resistance and bandwidth define the signal path The MAX4721EUA+T is a dual SPST-NO analog switch from Analog Devices, with a maximum on-resistance of 4.5 Ohm and a -3 dB bandwidth of 300 MHz. That combination means it can pass a high-frequency analog signal — up to video or RF — with minimal attenuation and without introducing a resistive voltage divider that would degrade the signal-to-noise ratio in a precision measurement chain. ## Crosstalk and charge injection for multi-channel integrity Crosstalk is specified at -110 dB at 1 MHz, which is the isolation between the two switch channels. In a multiplexed data-acquisition system where one channel is sampling while the other is settling, that figure keeps the feedthrough below the noise floor of a 16-bit ADC. Charge injection is 5 pC — a key parameter when the switch drives a sample-and-hold capacitor; the injected charge translates to a voltage step that must settle before the ADC conversion starts. Channel-to-channel on-resistance matching is 100 mOhm, which ensures that the gain error introduced by the switch is consistent across both paths. For a differential signal chain, this matching preserves the common-mode rejection ratio of the downstream amplifier. Switch timing is 80 ns turn-on and 40 ns turn-off maximum. That asymmetry is typical of CMOS switches — the turn-off edge is faster, which helps minimize the break-before-make gap in multiplexed applications. The 80 ns on-time sets the minimum channel dwell for a given sampling rate. ## Supply range and leakage for low-power analog front ends The switch operates from a single positive rail, so the analog signal must stay within the supply rails — it is not a true rail-to-rail switch, but the 4.5 Ohm on-resistance is flat across the signal range, which matters for linearity. Maximum off-leakage current is 500 pA at 25°C. For a sensor front end with a 10 MOhm source impedance, that leakage contributes a 5 µV offset error — negligible for most applications, but worth derating if the ambient temperature rises above 85°C, where leakage doubles every 10°C. Channel capacitance is 9 pF, which combines with the source impedance to form a low-pass filter; at 10 MOhm, the -3 dB point is about 1.8 kHz, so the switch itself does not limit bandwidth in high-impedance circuits. The surface-mount package is suited for automated assembly; the Tape & Reel (TR) and Cut Tape (CT) options cover both production and prototyping quantities.","metaTitle":"MAX4721EUA+T Analog Devices SPST Switch, 4.5 Ohm, 300 MHz","metaDescription":"MAX4721EUA+T dual SPST-NO analog switch, 4.5 Ohm on-resistance, 300 MHz bandwidth, -110 dB crosstalk. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Crosstalk":"-110dB @ 1MHz","Mounting Type":"Surface Mount","-3db Bandwidth":"300MHz","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","Switch Circuit":"SPST - NO","lifecycle_stage":"eol_hot","Charge Injection":"5pC","Number of Circuits":"2","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-uMAX/uSOP","On-State Resistance (Max)":"4.5Ohm","Switch Time (Ton, Toff) (Max)":"80ns, 40ns","Voltage - Supply, Single (V+)":"1.8V ~ 5.5V","Current - Leakage (IS(off)) (Max)":"500pA","Multiplexer/Demultiplexer Circuit":"1:1","Channel Capacitance (CS(off), CD(off))":"9pF","Channel-to-Channel Matching (ΔRon)":"100mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.19","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.19000","currency":"USD"},{"qty":10,"price":"$2.86100","currency":"USD"},{"qty":25,"price":"$2.70440","currency":"USD"},{"qty":100,"price":"$2.34370","currency":"USD"},{"qty":250,"price":"$2.22352","currency":"USD"},{"qty":500,"price":"$1.99516","currency":"USD"},{"qty":1000,"price":"$1.68266","currency":"USD"},{"qty":2500,"price":"$1.59853","currency":"USD"},{"qty":5000,"price":"$1.53843","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6f3090db73d6e75d3236fdbf7ce7df23.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the crosstalk of MAX4721EUA+T at 1 MHz?","answer":"The crosstalk is -110 dB at 1 MHz. This is the isolation between the two switch channels and is a key spec for multi-channel signal switching where channel-to-channel bleed-through must stay below the system noise floor."},{"question":"What package options are available for MAX4721EUA+T?","answer":"The MAX4721EUA+T is supplied in an 8-uMAX/uSOP package (3.00 mm width), which is footprint-compatible with 8-TSSOP and 8-MSOP. It is offered in Tape & Reel (TR) and Cut Tape (CT) options."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX4721EUAT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX4721EUAT 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}}