PCF8591 AD / DA Conversion of to Digital /Digital-to- Converter Module Temperature Illumination
PCF8591 is a single-chip integrated, individually powered, low-power, 8-bit CMOS data acquisition device. PCF8591 has 4 analog inputs, 1 analog output, and 1 serial I2C bus interface. The three address pins A0, A1, and A2 of PCF8591 can be used for hardware address programming, allowing for the connection of eight PCF8591 devices on the same I2C bus without the need for additional hardware. The input and output addresses, control, and data signals on the PCF8591 device are transmitted in a serial manner through a dual wire bidirectional I2C bus.
Main performance indicators of PCF8591:
PCF8951 adopts a single power supply, with a working voltage range of 2.5V-6V
The analog voltage range of PCF8591 ranges from VSS to VDD
PCF8591 has a built-in tracking and holding circuit;
PCF8591 has a lower standby current
PCF8591 serial input/output data through I2C bus
The sampling rate of PCF8591 is determined by the I2C bus rate
PCF8591 addresses through three hardware address pins
The four analog inputs of PCF8591 can be programmed as single ended or differential
PCF8591 has automatic incremental channel selection
The AD sampling part of PCF8591 adopts 8-bit successive approximation A/D conversion
PCF8591 has one DA analog-to-digital conversion to achieve analog output
Function description of PCF8591 AD/DA analog-to-digital conversion module
The main processing chip of the module is PCF8951
Module PCB size: 3.6cm * 2.3cm
The module adopts a standard double-sided board with a thickness of 1.6mm, and the layout is beautiful and generous. There are through-holes around it, with a diameter of 3mm, which is easy to fix
The module has a power indicator light (the indicator light will light up when the module is powered on)
The module has a DA output indicator light. When the voltage of the module's DA output interface reaches a certain value, the DA output indicator light on the board will be lit. The higher the voltage, the more obvious the brightness of the indicator light;
The module supports external 4 voltage input acquisition (voltage input range 0-5V)
Module integrated photoresistor, capable of collecting accurate values of ambient light intensity through AD
Module integrated thermistor, capable of collecting accurate environmental temperature values through AD
Module integration: 1 channel of 0-5V voltage input acquisition (adjust input voltage through blue and white potentiometers)
