{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DG419LDY+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DG419LDY","canonicalUrl":"https://icboms.com/analog-devices/DG419LDY","factsUrl":"https://icboms.com/api/mcp/products/DG419LDY%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DG419LDY+ SPDT analog switch, 35 Ohm on-resistance, 8-SOIC surface mount package, single 9V-36V or dual ±4.5V-20V supply, -86dB crosstalk at 1MHz.","salesMarkdown":"## Signal routing with 35 Ohm on-resistance and -86 dB crosstalk The DG419LDY+ is a single-pole double-throw (SPDT) analog switch from Analog Devices, built for routing analog or digital signals in precision measurement, audio, and data-acquisition chains. Crosstalk is specified at -86 dB at 1 MHz, meaning a signal on one channel couples into the off channel at roughly 50 µV per volt of signal — low enough for 12-bit systems switching audio or low-frequency sensor data without a dedicated guard trace. ## Supply flexibility and charge injection for sample-and-hold The switch operates from a single 9 V to 36 V rail or dual ±4.5 V to ±20 V supplies, so it fits both single-supply data-acquisition front-ends and bipolar signal chains where the analog ground is a virtual midpoint. Charge injection is 15 pC typical — when the switch opens, that charge dumps into the sampling capacitor. In a 12-bit, 100 kSPS SAR ADC with a 10 nF hold cap, the injected charge creates a 1.5 mV step, which settles within the LSB budget if the acquisition time is long enough. Off-leakage current is 250 pA max, and channel capacitance is 8 pF on both source and drain pins. The low leakage keeps the voltage on a high-impedance node from drifting more than a few millivolts over a 10 ms hold interval. ## Package and board integration The 2:1 multiplexer/demultiplexer circuit means one common pin connects to either of two I/O pins — useful for selecting between two sensor inputs or routing a single ADC input to one of two signal paths.","metaTitle":"DG419LDY+ SPDT Analog Switch, 35 Ohm, 8-SOIC, Active","metaDescription":"DG419LDY+ SPDT analog switch from Analog Devices, 35 Ohm on-resistance, -86dB crosstalk at 1MHz, 8-SOIC package. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Crosstalk":"-86dB @ 1MHz","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Switch Circuit":"SPDT","lifecycle_stage":"eol_hot","Charge Injection":"15pC","Number of Circuits":"1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","On-State Resistance (Max)":"35Ohm","Voltage - Supply, Dual (V±)":"±4.5V ~ 20V","Voltage - Supply, Single (V+)":"9V ~ 36V","Current - Leakage (IS(off)) (Max)":"250pA","Multiplexer/Demultiplexer Circuit":"2:1","Channel Capacitance (CS(off), CD(off))":"8pF, 8pF","Channel-to-Channel Matching (ΔRon)":"100mOhm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.97","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.97000","currency":"USD"},{"qty":10,"price":"$6.29700","currency":"USD"},{"qty":25,"price":"$6.00440","currency":"USD"},{"qty":100,"price":"$5.21360","currency":"USD"},{"qty":250,"price":"$4.97928","currency":"USD"},{"qty":500,"price":"$4.53996","currency":"USD"},{"qty":1000,"price":"$3.95415","currency":"USD"},{"qty":2500,"price":"$3.80770","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/694c0e4c511c0a837a41801e5380f59c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the crosstalk specification for DG419LDY+?","answer":"Crosstalk is specified at -86 dB at 1 MHz. This means a 1 V signal on one channel couples about 50 µV into the off channel, which is adequate for 12-bit precision analog switching at audio frequencies."},{"question":"What supply voltages does DG419LDY+ support?","answer":"This flexibility allows it to work in both single-rail and bipolar analog signal chains."},{"question":"What is the on-resistance of DG419LDY+?","answer":"The maximum on-resistance is 35 Ohm, with channel-to-channel matching of 100 mOhm. The low matching ensures consistent attenuation when switching between two signal paths."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DG419LDY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DG419LDY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T18:24:51.164Z","lastPublished":"2026-07-20T18:24:51.164Z","indexable":true}}