How good is your multimeter really? Or maybe your analogue converter needs a good reference? Or let's say you want to test your microcontroller's conversion accuracy & precision. If only you had a dependable, high-precision, rock-solid voltage reference. Now you know why we 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 have 0.1% accuracy! Using 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 LM0 Datasheet for more information. Specifications * PCB Dimensions: 16mm x 12.5mm x 2.5mm * Weight: 0.7g Resources * LM0 Datasheet * EagleCAD PCB Files on GitHub * Fritzing object in Adafruit Fritzing library https://elecena.pl/product/22711993/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v 2023-03-06 https://elecena.pl/product/22711993/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v 2023-12-27 https://elecena.pl/product/22711993/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v 2024-09-19 https://elecena.pl/product/22711993/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v 2024-11-29 https://elecena.pl/product/22711993/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v 2024-11-30 https://elecena.pl/product/22711993/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v 2025-08-06 https://elecena.pl/product/22711993/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v 2025-11-28 https://elecena.pl/product/22711993/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v 2025-11-29