# Precision LM4040 Voltage Reference Breakout - 2.048V and 4.096V

**Type:** Product page · **SKU:** ADA2200 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v.html ([markdown](https://core-electronics.com.au/precision-lm4040-voltage-reference-breakout-2-048v-and-4-096v.html.md))

How good is your multimeter really? Or maybe your analog converter needs a good reference? Or lets say you want to test your microcontroller's conversion accuracy...

## Pricing

- **Price:** $14.80 (inc GST) — $13.45 AUD, exc GST
- **Quantity discounts:** 10+ $13.05 (exc GST) · 50+ $12.78 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 500 more in 7–12 days.

## Description

How good is your multimeter **really**? Or maybe your analog converter needs a good reference? Or lets 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 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!

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 [LM4040 Datasheet](https://core-electronics.com.au/attachments/localcontent/lm4040-n_135526789c3.pdf) for more information.

## Technical Details

- [LM4040 Datasheet](https://core-electronics.com.au/attachments/localcontent/lm4040-n_135526789c3.pdf)
- [EagleCAD PCB Files on GitHub](https://github.com/adafruit/Adafruit-LM4040-Voltage-Reference-PCB)
- [Fritzing object in Adafruit Fritzing library](https://github.com/adafruit/Fritzing-Library)

![](https://core-electronics.com.au/attachments/localcontent/2200techdeets_171196eb99e.png)

- PCB Dimensions: 16mm x 12.5mm x 2.5mm / 0.6" x 0.5" x 0.1"
- Weight: 0.7g

 ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/2/2/2200-00.jpg)