> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 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.

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## 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)