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The DS2450 is an A/D converter module with a resolution of up to 16-bit.
Additionally, the four channels can also be used as an output (4 mA). Further details check out on the data sheet.
Alternatively, you can select any of the four channels as a "Digital Output" and "Analog Input".
In addition, two voltage ranges are available: 2.55 V and 5.1 V.
Furthermore, the resolution between 1-bit and 16-bit is adjustable: