Analog-digital converter 8-bit PCF8591 with on-board sensors

PCF8591 is a single-supply, low-power 8 COMS-type A/D, D/A converter chip, it has a 4-channel analog input channels, all the way to the analog output channels and an I2C bus interface.

The PCF8591 has the following characteristics:

• Single power supply;
• The normal operating supply voltage range of 2.5V ~ 6V;
• Completed through the I2C bus data input / output;
• Device address is determined by three address pins;
• The sampling frequency is decided by the I2C bus transfer rate;
• The 4 Road analog inputs programmable as single-ended or differential inputs;
• Can be configured to convert the channel number is automatically increased functionality;
• The analog voltage range of VSS ~ VDD;
• On-chip track-and-hold function;
• 8-bit successive approximation A/D conversion;
• Multiplication with one analog output D/A converter.

Module Description:

• Module with PCF8591T, SMD package
• Support 4 channel analog voltage input (voltage input range of 0 - 5V)
• Power LED (D1)
• DA output indicator (D2), when the DA output voltage reaches a certain value, the higher voltage value will result brighter LED.
• On-board potentsiometer 0 - 5V voltage input acquisition
• On-board photoresistor (Model: 5537), ambient light intensity
• On-board thermistor (Model: MF58) ambient temperature
• PCB size: 48mm * 25mm * 1.6mm