Summary of Arduino and the LTC2440 24bit ADC
John Beale explains how to connect Linear Technology’s LTC2440 24-bit ADC to an Arduino via SPI to dramatically improve analog reading resolution. He provides a wiring guide, a brief Arduino sketch, and practical tips to ensure correct operation when using the SSOP-packaged ADC on the Dangerous Prototypes forum.
Parts used in the Arduino and the LTC2440 24bit ADC Project:
- Arduino board
- Linear LTC2440 24-bit ADC (SSOP package)
- SPI interface connection (wiring between Arduino and LTC2440)
- Wires/jumper cables
- Breadboard or PCB for mounting
- Power supply for Arduino and ADC
- Optional level shifter or adapters for SSOP package
Have you ever wondered how to improve the resolution of analog readings of your Arduino board? If yes, this is for you.

John Beale, discussing on the Dangerous Prototypes’ forum, quickly describes how to connect a Linear’s LTC2440 ADC to an Arduino board, which will provide you with an amazing 24 bit resolution.
The ADC, which is available in a SSOP package, can be connected to the Arduino via the SPI bus. Here John provides a brief sketch and some very useful comments to make it working properly.
For more detail: Arduino and the LTC2440 24bit ADC
- Can the LTC2440 be connected to an Arduino?
Yes, John Beale describes connecting the LTC2440 to an Arduino via the SPI bus. - What resolution does the LTC2440 provide?
The LTC2440 provides 24-bit resolution. - What package is the LTC2440 available in as mentioned?
The LTC2440 is available in an SSOP package. - Does the article include example code?
Yes, John provides a brief Arduino sketch to use the LTC2440. - How is the ADC connected electrically?
It is connected to the Arduino via the SPI bus wiring. - Are there practical tips provided for proper operation?
Yes, John offers useful comments to make the ADC work properly. - Where was this connection method discussed?
On the Dangerous Prototypes forum by John Beale.
