{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX320CSA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX320CSA","canonicalUrl":"https://icboms.com/analog-devices/MAX320CSA","factsUrl":"https://icboms.com/api/mcp/products/MAX320CSA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX320CSA+ dual SPST-NO analog switch, 35Ohm on-resistance, 150ns/100ns switching, -85dB crosstalk at 1MHz, 2pC charge injection, 8-SOIC package, Tube.","salesMarkdown":"## Dual SPST switch with 35 Ohm on-resistance The MAX320CSA+ is a dual single-pole single-throw (SPST) normally-open analog switch from Analog Devices, packaged in an 8-SOIC. Each switch presents a maximum 35 Ohm on-resistance, with channel-to-channel matching held to 300 mOhm — the resistance mismatch between the two channels stays under a third of an ohm, which matters when the switch pair carries a differential signal where gain matching depends on the series resistance. Switching is specified at 150 ns turn-on and 100 ns turn-off maximum. For a multiplexed data-acquisition front-end scanning at 500 kHz, the 150 ns settling window sets the minimum sample period before the downstream ADC starts conversion. ## Signal integrity: crosstalk, charge injection, leakage Crosstalk between channels is rated at -85 dB at 1 MHz. In a precision analog multiplexer switching a 10 Vpp signal, -85 dB means the coupled noise on the off channel is roughly 560 µV — below the LSB of a 16-bit ADC with a 5 V reference, so the adjacent channel bleed does not limit the system resolution at that frequency. Charge injection is 2 pC typical. When the switch opens, the 2 pC charge dumped onto the hold capacitor in a sample-and-hold stage produces a voltage step of 2 pC / C_hold — for a 10 nF hold cap that is 200 µV, a known error term that the downstream ADC's acquisition time must absorb before conversion starts. Maximum off-channel leakage current is 100 pA. In a high-impedance sensor front-end with a 10 MOhm source, 100 pA leakage develops 1 mV of offset error — negligible for a 12-bit system but worth budgeting in a 24-bit precision path where the leakage floor competes with the sensor's own bias current. Each channel's off-capacitance is 9 pF on both source and drain sides. The 9 pF CS(off) and CD(off) set the AC feedthrough floor — at 1 MHz the capacitive coupling through the open switch is roughly 1/(2π × 9 pF × 1 MHz) ≈ 18 kOhm, which in a 10 kOhm load creates a measurable signal bleed that the crosstalk spec already captures. The switch operates from a dual supply of ±2.7 V to ±8 V. With a ±5 V rail the analog signal swing reaches ±4.5 V before hitting the supply headroom — the 35 Ohm Ron is specified at that supply condition and increases as the supply drops toward ±2.7 V. Temperature range is 0°C to 70°C ambient — commercial grade. The switch is specified for indoor bench equipment, lab instrumentation, and telecom line cards where the enclosure stays climate-controlled. No industrial or automotive temperature coverage on this variant. ## Package and board integration Housed in an 8-SOIC (0.154-inch body width, 3.90 mm width) surface-mount package, supplied in Tube. The footprint matches the industry-standard SOIC-8 land pattern — no special pad geometry required.","metaTitle":"MAX320CSA+ Analog Devices SPST Switch, 35Ohm, 8-SOIC","metaDescription":"MAX320CSA+ dual SPST analog switch, 35Ohm on-resistance, 150ns switching, -85dB 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":"Tube","Crosstalk":"-85dB @ 1MHz","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Switch Circuit":"SPST - NO","lifecycle_stage":"eol_hot","Charge Injection":"2pC","Number of Circuits":"2","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"8-SOIC","On-State Resistance (Max)":"35Ohm","Voltage - Supply, Dual (V±)":"±2.7V ~ 8V","Switch Time (Ton, Toff) (Max)":"150ns, 100ns","Current - Leakage (IS(off)) (Max)":"100pA","Multiplexer/Demultiplexer Circuit":"1:1","Channel Capacitance (CS(off), CD(off))":"9pF, 9pF","Channel-to-Channel Matching (ΔRon)":"300mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.47","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.47000","currency":"USD"},{"qty":10,"price":"$4.01400","currency":"USD"},{"qty":25,"price":"$3.79520","currency":"USD"},{"qty":100,"price":"$3.28910","currency":"USD"},{"qty":250,"price":"$3.12040","currency":"USD"},{"qty":500,"price":"$2.79992","currency":"USD"},{"qty":1000,"price":"$2.36138","currency":"USD"},{"qty":2500,"price":"$2.24331","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a0fddb99dba39853305f55f9db064928.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX320CSA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX320CSA 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}}