{"product_id":"adafruit-precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v","title":"Adafruit Precision Voltage Reference (LM4040) Breakout - 2.048V and 4.096V","description":"\u003cp\u003eHow good is your multimeter really?\u003c\/p\u003e\n\u003cp\u003eOr maybe your analog converter needs a good reference? Or lets say you want to test your microcontroller's conversion accuracy \u0026amp; precision. If only you had a dependable, high precision, rock-solid voltage reference.\u003c\/p\u003e\n\u003cp\u003eNow you know why Adafruit made this very cute and useful little breakout board. It has two very high precision shunt-type voltage references with 750 ohm biasing resistors. One is 2.048V (great for 3.3V reference systems) and the other is 4.096 (great for 5V). Both are 0.1% accuracy!\u003c\/p\u003e\n\u003cp\u003eUsing is easy, just power with about 5V-12V, or 3V if you want only the 2V reference to work. Then measure the voltage on the output. Note that these are not regulators - you can't power anything off the output. They are for measurements only. For more details, check the \u003ca href=\"http:\/\/www.adafruit.com\/datasheets\/lm4040-n.pdf\" target=\"_blank\"\u003eLM4040 Datasheet\u003c\/a\u003e for more information.\u003c\/p\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":989607525,"sku":"ADA2200","price":7.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/2200.jpg?v=1416835881","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v","provider":"Pimoroni Ltd","version":"1.0","type":"link"}