Single-Supply Operation PCF8591 operating voltage range of 2.5V to 6V Low standby current through the I2C bus serial input/output PCF8591 by 3 hardware address pins addressing Sampling rate PCF8591 I2C bus rate decided 4 analog inputs programmable as single-ended or differential inputs Automatic incremental channel selection PCF8591 analog voltage range from VSS to VDD PCF8591 built-in track and hold circuit 8-bit successive approximation A / D converter through an analog output DAC gain
Interface:
The module's left and right, respectively, the external expansion of the 2-way pin interface, respectively, as follows: Output interface of the left the AOUT chip DA The AINO chip analog input interface. AIN1 chip analog input interface AIN2 chip analog input interface AIN3 chip analog input interface
The right side of the SCL IIC clock interface to access the microcontroller IO port The SDA IIC digital interface connected microcontroller IO port GND module to an external VCC power supply interface external 3.3v-5v Module red jumper instructions for use Module three red short circuit cap, respectively, the role is as follows: P4 connected to the P4 jumper, select thermistor access circuit P5 connected to P5 jumper to select the photoresistor access circuit P6 connected to the P6 jumper, to select 0-5V adjustable voltage access circuit
Specification:
Module PCB size: 3.6cm * 2.3cm
PCF8591 operating voltage range of 2.5V to 6V
4 analog inputs programmable as single-ended or differential inputs
VCC power supply interface external 3.3v-5v
8-bit successive approximation A / D converter through an analog output DAC gain
