PCF8591 Module

This is a breakout board/Prototype Board for PCF8591 IC. 

The PCF8591 is a single-chip, single‑supply low‑power 8‑bit CMOS data acquisition device with four analog inputs, one analog output and a serial I²C‑bus interface. Three address pins A0, A1 and A2 are used for programming the hardware address, allowing the use of up to eight devices connected to the I²C‑bus without additional hardware. Address, control and data to and from the device are transferred serially via the two-line bidirectional I²C‑bus.

The functions of the device include analog input multiplexing, on-chip track and hold function, 8-bit analog‑to‑digital conversion and an 8‑bit digital‑to‑analog conversion. The maximum conversion rate is given by the maximum speed of the I²C-bus.

Some Point -

• PCF8591 is AD/DA Convertor Module.

•  A module chip using PCF8591

• Module supports external voltage input capture (input voltage range 0-5v)

• Three modules integrated photoresistor acquisition environment through the AD intensity accurate numerical

• Modules integrated thermistor, can capture the precise value of the ambient temperature through the AD

• The five-module integrated 1 channel 0-5V voltage input acquisition (blue potentiometer to adjust the input voltage)

• Modules with power indicator light (on the module after power indicator lights)

• Modules with the DA output indicator light board DA output indicator module DA output interface voltage reaches a certain value, the voltage the greater the light brightness is more obvious;

• Module PCB size: 3.6cm * 2.3cm

• Standard double-sided, plate thickness 1.6mm, the layout is nice, surrounded by the through-hole, aperture: 3mm, convenient fixed

Features of PCF8591 Module

• Single-Supply Operation

• Operating voltage range of 2.5V to 6V

• Low standby current

• Through the I2C bus serial input / output

• PCF8591 interface only by 3 hardware pins

• 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