PCF8591 AD/DA Converter Module

PCF8591 is a monolithic, independently powered, low-power, 8-bit CMOS data acquisition device. PCF8591 has 4 analog inputs, 1 analog output, and 1 serial I2C bus interface. The 3 address pins A0, A1, and A2 of PCF8591 can be used for hardware address programming, allowing 8 PCF8591 devices to be connected on the same I20 bus without additional hardware. The address, control, and data signals input and output on the PCF8591 device are transmitted serially through a two-line bidirectional I2C bus.

Feature

• Single power supply
• PCF8591 operating voltage range 2.5V-6V
• Low standby current
• Serial input/output via 120 bus
• PCF8591 is addressed via 3 hardware address pins
• The 120 bus rate determines the sampling rate of PCF8591
• 4 analog inputs can be programmed as single-ended or differential inputs
• Automatic increment channel selection
• The analog voltage range of PCF8591 is from VSS to VDD
• PCF8591 has built-in track-and-hold circuit
• 8-bit successive approximation A/D converter
• DAC gain is achieved through 1 analog output
• Size: 3.6cm*2.3cm

Function

• Chip uses PCF8951
• Supports external 4-way voltage input acquisition (voltage input range 0-5v)
• Integrated photoresistors, can collect accurate values ​​of ambient light intensity through AD
• Integrated thermistors, can collect accurate values ​​of ambient temperature through AD
• Integrated 1-way 0-5V voltage input acquisition (adjust input voltage through blue potentiometer)
• With power indicator light (the indicator light will light up after powering on the module)
• With the DA output indicator light, when the module DA output interface voltage reaches a certain value, the DA output indicator light on the board will light up, the higher the voltage, the brighter the indicator light