{"product_id":"2-channel-ultra-precise-current-sensor","title":"2 Channel Ultra-Precise Current Sensor","description":"\u003cp\u003eThe product described here is a two-channel ultra-precise, current-sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e2.7 V to 120 V\u003c\/strong\u003e. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eINA2290A1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003echip is the heart of the project. The ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of ±12 µV (maximum), a small gain error of ±0.1% (maximum), and a high DC CMRR of 160 dB (typical). The circuit is not only designed for DC measurement but also for high-speed applications (such as fast overcurrent protection, for example) with a high bandwidth of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1.1 MHz\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(at a gain of 20 V\/V) and an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e85dB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAC CMRR (at 50 kHz). The project achieves ultra-precise current measurement by sensing the voltage drop across resistors R3 and R6.\u003c\/p\u003e\n\u003cp\u003eThe circuit operates from a single\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e2.7V to 20V\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupply with the single channel device only drawing 370µA + LED supply current per channel (typical). The devices are available with five gain options: 20 V\/V, 50 V\/V, 100 V\/V, 200 V\/V, and 500 V\/V. The low offset of the zero-drift architecture enables current sensing with low ohmic shunts as specified over the extended operating temperature range (−40°C to +125°C). Screw terminals are provided to connect the load, header connector is provided to power the circuit, and analog voltage output.\u003c\/p\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47242266902700,"sku":"S137","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/S137.jpg?v=1789722747","url":"https:\/\/dotfry.com\/products\/2-channel-ultra-precise-current-sensor","provider":"dotfry","version":"1.0","type":"link"}