The TS12A12511DCNR from Texas Instruments is a single-channel SPDT (2:1) analog switch with negative signaling capability. It features 5\u03a9 typical on-resistance, rail-to-rail signal handling, and operation from single (2.7V ~ 12V) or dual (\u00b12.7V ~ \u00b16V) supplies in a compact SOT-23-8 package.<\/p>\n
Product Overview The TS12A12511DCNR from Texas Instruments is a single-channel SPDT (2:1) analog switch with negative signaling capability. It features 5\u03a9 typical on-resistance, rail-to-rail signal handling, and operation from single (2.7V ~ 12V) or dual (\u00b12.7V ~ \u00b16V) supplies in a compact SOT-23-8 package. Key Specifications Configuration: SPDT (1 channel, 2:1 mux\/demux) On-Resistance: 5\u03a9 typical, […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[138],"class_list":["post-6494","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"SPDT analog switch, 5\u03a9 Ron, negative signaling, 2.7-12V single\/\u00b16V dual, SOT-23-8, 93MHz BW","date_code":"","package_case":"SOT-23-8 (2.9 x 1.6 mm)","in_stock":5700,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/ts12a12511.pdf","price":"$0.91","product_introduction":"The TS12A12511DCNR from Texas Instruments is a bidirectional single-channel SPDT analog switch capable of passing signals with swings of 0 to 12V or -6V to +6V, making it suitable for applications requiring negative signal handling. The device features low 5\u03a9 on-resistance with excellent flatness of 1.6\u03a9, ensuring minimal signal distortion. It operates from either a single supply (2.7V to 12V) or dual supplies (\u00b12.7V to \u00b16V), providing flexibility for various system voltage rails. The break-before-make switching action prevents momentary shorting between the normally-open and normally-closed channels during transitions. The DCNR suffix denotes SOT-23-8 package with tape and reel packaging.","working_principle":"The TS12A12511DCNR uses a CMOS transmission gate structure where parallel-connected N-channel and P-channel MOSFETs form the switch element. When the switch is on, both MOSFETs conduct, providing a low-impedance path between the common (COM) terminal and the selected throw (NC or NO). The parallel NMOS\/PMOS combination ensures rail-to-rail signal capability since the NMOS handles signals near the positive rail and the PMOS handles signals near the negative rail. The negative signaling capability is achieved by connecting the V- supply pin to a negative voltage, which biases the NMOS body connection and prevents parasitic diode conduction for negative signals. The break-before-make timing ensures that the NC and NO paths are never simultaneously connected, preventing crosstalk between channels. The digital control input (IN) is compatible with both 3.3V and 5V logic levels.","pin_description":"
| Pin<\/th> | Name<\/th> | Function<\/th><\/tr> | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1<\/td> | V+<\/td> | Positive supply voltage<\/td><\/tr> | ||||||||||||
| 2<\/td> | NO<\/td> | Normally-open switch terminal<\/td><\/tr> | ||||||||||||
| 3<\/td> | COM<\/td> | Common switch terminal<\/td><\/tr> | ||||||||||||
| 4<\/td> | V-<\/td> | Negative supply voltage (connect to GND for single supply)<\/td><\/tr> | ||||||||||||
| 5<\/td> | GND<\/td> | Ground<\/td><\/tr> | ||||||||||||
| 6<\/td> | IN<\/td> | Digital control input (selects NC or NO)<\/td><\/tr> | ||||||||||||
| 7<\/td> | NC<\/td> | Normally-closed switch terminal<\/td><\/tr> | ||||||||||||
| 8<\/td> | EN<\/td> | Enable input (active high, tie to V+ for normal operation)<\/td><\/tr><\/table>","application_scenarios":"The TS12A12511DCNR is particularly valuable in automatic test equipment where it routes test signals to different DUT (device under test) pins, and the negative signaling capability allows testing of bipolar analog circuits. In power routing applications, it selects between two power sources (e.g., battery vs. external supply) with minimal voltage drop. For data acquisition systems, it multiplexes multiple sensor inputs to a single ADC channel. The break-before-make action is critical in audio signal routing where pops and clicks from momentary shorts would be audible. The SOT-23-8 package enables high-density layouts in portable equipment.","alternative_models":"
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