{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TMCS1100A4QDT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TMCS1100A4QDT","canonicalUrl":"https://icboms.com/texas-instruments/TMCS1100A4QDT","factsUrl":"https://icboms.com/api/mcp/products/TMCS1100A4QDT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TMCS1100A4QDT Hall-effect current sensor, AC/DC, 400mV/A sensitivity, 80kHz bandwidth, ±0.05% linearity, 8-SOIC package, Tape & Reel.","salesMarkdown":"## Hall-effect current sense with ratiometric voltage output The TMCS1100A4QDT is a single-channel Hall-effect current sensor from Texas Instruments that outputs a ratiometric voltage proportional to the sensed current. Sensitivity is 400 mV/A, meaning each amp of measured current produces 400 mV at the output pin — a 5 A load gives 2.0 V out, leaving headroom to the 5 V supply rail. It measures both AC and DC without external polarity handling, and the Hall-effect front end provides galvanic isolation between the current-carrying conductor and the output stage — no shunt resistor, no insertion loss. ## Bandwidth, linearity, and the overcurrent detection window Small-signal bandwidth is 80 kHz, which means the sensor can track current waveforms up to that frequency — adequate for 50/60 Hz mains monitoring, motor phase currents up to the switching ripple, and DC-link ripple in a typical VFD. The 6.5 µs response time sets the propagation delay from a current step to the output crossing a threshold; a controller sampling at 10 kHz has plenty of margin to catch a fault before the next cycle. Linearity is ±0.05% of full scale, so the measurement error from the sensor itself is below half a milliamp at 1 A — the dominant error in a real BOM will be the ADC's reference drift and noise, not the Hall element. Supply range is 4.5 V to 5.5 V, typical for a ratiometric sensor that shares a 5 V rail with the ADC reference. Because the output is ratiometric, any drift in the supply voltage cancels at the ADC if the reference tracks the same rail. ## Package, temperature grade, and supply current Housed in an 8-pin SOIC (8-SOIC, 3.90 mm body width) — a standard SMT footprint that reflows on any normal lead-free profile. The supplier device package is 8-SOIC; no exposed pad, no special thermal vias required. Operating temperature range is -40°C to +125°C ambient, covering industrial enclosures, outdoor telecom cabinets, and under-hood automotive zones. The device draws a maximum of 6 mA from the supply rail — negligible in a 5 V system, but worth checking if the sensor is powered from a low-dropout regulator near its dropout floor.","metaTitle":"Texas Instruments TMCS1100A4QDT Hall-Effect Current Sensor","metaDescription":"Active-production Hall-effect current sensor from TI. 400mV/A sensitivity, 80kHz bandwidth, ±0.05% linearity. AC/DC measurement in 8-SOIC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Output":"Ratiometric, Voltage","Package":"Tape & Reel (TR); Cut Tape (CT)","Frequency":"80kHz","Linearity":"±0.05%","Sensitivity":"400mV/A","Sensor Type":"Hall Effect","For Measuring":"AC/DC","Mounting Type":"Surface Mount","Response Time":"6.5µs","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Channels":"1","Operating Temperature":"-40°C ~ 125°C (TA)","Current - Supply (Max)":"6mA","Supplier Device Package":"8-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.06","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.06000","currency":"USD"},{"qty":10,"price":"$4.54300","currency":"USD"},{"qty":25,"price":"$4.29520","currency":"USD"},{"qty":100,"price":"$3.72240","currency":"USD"},{"qty":250,"price":"$3.53148","currency":"USD"},{"qty":500,"price":"$3.16878","currency":"USD"},{"qty":1250,"price":"$2.67246","currency":"USD"},{"qty":2500,"price":"$2.53884","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6a1562e3ecd852c2a28b1dc53e27d548.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the sensitivity and output type of TMCS1100A4QDT?","answer":"Sensitivity is 400 mV/A with a ratiometric voltage output. The output voltage scales linearly with the 5 V supply rail, so a ratiometric ADC reference tied to the same supply cancels drift. The sensor measures both AC and DC current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TMCS1100A4QDT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TMCS1100A4QDT 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}}