Feature

●A monolithically integrated, a separate power supply, low-power, 8-bit CMOS data acquisition devices
●It has four analog inputs, analog outputs, and a serial I2C bus interface 1
●Three address pins A0, A1 and A2 may be used for programming the hardware address
●Allow access to eight devices on the same one PCF8591 I2C bus, without the need for additional hardware
●Input and output on the PCF8591 device address, control and data signals are transmitted through the bi-directional two-wire I2C-bus serial manner


Description

Key indicators:

Single supply ★

★ PCF8591 operating voltage range of 2.5V-6V

Low standby current ★

★ I2C bus serial input / output

3 ★ PCF8591 by addressing hardware address pins

★ PCF8591 I2C bus speed sampling rate determined

★ 4 analog inputs of programmable single-ended or differential input

★ automatic incremental channel selection

★ PCF8591 analog voltage range from VSS to VDD

★ PCF8591 built track and hold circuit

★ 8-bit successive approximation A / D converter

DAC gain achieved by ★ 1 analog output

PCF8951 2 module chip module supports four external voltage input acquisition (input voltage range of 0-5v) 3 modules integrated photoresistor, by collecting ambient light intensity AD exact numerical integration module thermistor 4, the ambient temperature can be accurately acquired by ADNumerical integration module 5 0-5V voltage input acquisition channel 1 (input voltage by adjusting potentiometer blue) with a power indicator module 6 (the module of power indicator lights) with DA output indicator module 7, when an output interface module DAthe voltage reaches a certain value, the board DA output indicator lights, the greater the voltage, the more significant indicator brightness; 8 module PCB dimensions: 3.6cm * 2.3cm 9 standard double sided, 1.6mm thickness, beautiful layout, four weeksa through hole, aperture: 3mm, convenient fixed

Description module interface modules are extended left and right two-way pin interfaces, respectively, as follows:

Left AOUT chip DA output interface

AINO chip analog input interface 0

AIN1 analog input interface chip 1

AIN2 analog input interface chip 2

AIN3 analog input interface chip 3

The right SCL IIC clock interface connected microcontroller IO port

SDA IIC digital interface connected microcontroller IO port

The external ground G