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PCF8591 AD / DA Conversion of Digital Converter Module Temperature Illumination

上市日期: 2018-01-15
建议销售价: 0
PCF8591 is a monolithic, single supply, low-power, 8-bit CMOS data acquisition devices. PCF8591 has 4 analog inputs, one analog output and a serial I2C bus interface. PCF8591 of three address pins A0, A1 and A2 can be used for programming the hardware address, allowing access to eight PCF8591 devices on the same I2C-bus, without the need for additional hardware. Input and output on the PCF8591 device address, control and data signals through two-line bidirectional I2C bus serially transmitted.
PCF8591 Key performance indicators:
 single power supply
 PCF8591 operating voltage range of 2.5V-6V
 
 Low Standby Current
 via I2C-bus serial input / output
 PCF8591 by 3 hardware address pins addressing
 PCF8591 I2C bus speed sampling rate decision
 4 programmable analog inputs for single-ended or differential inputs
 auto increment channel selection
 PCF8591 analog voltage range from VSS to VDD
 PCF8591 built-in track and hold circuit
 8-bit successive approximation A / D converter
 DAC gain realized by an analog output
 
Two baby description
A module chip PCF8951
2 module supports four external voltage input acquisition (voltage input range 0-5v)
3 modules integrated photoresistor, you can collect the ambient light intensity AD exact numeric
4 modules integrated thermistor, you can collect the ambient temperature exact numeric AD
5 module integrates a road 0-5V voltage input acquisition (via the blue potentiometer to adjust the input voltage)
6 modules with power indicator (on the module power indicator will light)
7 modules with DA output indicator, when the module DA output interface voltage reaches a certain value, it will light up the board DA output indicator, the greater the voltage, the LED brightness is more obvious;
8 module PCB size: 3.6cm * 2.3cm
9 standard dual panel, thickness 1.6mm, nice layout, surrounded by a through-hole, pore size: 3mm, convenient fixed
 
 
Three module interface specification
The module on the left and right, respectively, 2-way external expansion pin connector, respectively, as follows:
DA output interface chip left AOUT
AINO chip analog inputs 0
AIN1 chip analog inputs 1
AIN2 chip analog inputs 2
AIN3 chip analog inputs 3
The right of the clock SCL IIC interface connected microcontroller IO port
SDA IIC digital interface connected microcontroller IO port
GND module to external ground
VCC power supply interface external 3.3v-5v
 
Four modules red cap shorted instructions
There are three red module shorted cap, respectively, the following effects:
P4 P4 shorting cap connected, select thermistor access circuit
P5 P5 connected shorting cap, select photoresistor access circuit
P6 P6 connected shorting cap, select 0-5V adjustable voltage access circuit
 
 
 Package Content:

1x Light Sensor(High-quality product.)
4x20cm DuPont cables

 
QQ20170817112008


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