The conversion results may include random noise.” Which meant that it is really a 8 bit AD converter with the higher quality settings not being reliable.įurther research found the MCP3428 16-Bit, Multi-Channel Analog-to-Digital Converter with I2C™ Interface and On-Board Reference by Microchip which has 4 input channels and as it communicates via the I2C interface should be a lot faster than the 1-Wire IC’s The original plan for the Analog-to-Digital Converter was to use the Dallas 1-Wire system and use the DS2450 1-Wire Quad A/D Converter which was advertised as being a 16 bit device but after buying two of the chips which are around £5 each I found that near the end of the spec PDF they say that “In the shaded areas the accuracy is less than the resolution.
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