A PCF8591 AD / DA chip introduced
PCF8591 is a monolithic , single supply, low power ,8-bit CMOS data acquisition device . PCF8591 has four analog inputs, one analog output and a serial I2C bus interface . PCF8591 the three address pins A0, A1 and A2 can be used for programming the hardware address , allowing access to the same I2C- bus PCF8591 8 devices without the need for additional hardware. PCF8591 device on the input and output address, control and data signals are bi-directional two-wire I2C-bus for transmission in a serial manner .
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 through 3 hardware address pins addressing
- PCF8591 I2C bus speed sampling rate decision
- 4 analog inputs programmable as 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
- Through an analog output of the DAC gain
Two baby description
- A module chip PCF8951
- 2 module supports an external 4-channel voltage input capture ( voltage input range 0-5v)
- 3 module integration photoresistor , you can capture the ambient light intensity through the AD precise values
- 4 module integrated thermistor temperature by exact numerical AD acquisition
- 5 module integrates a channel 0-5V voltage input capture ( via the blue potentiometer adjustment input voltage )
- 6 module with power indicator ( the module after power indicator lights )
- 7 module with DA output indicator , when the module DA output interface voltage reaches a certain value , the board will be lit DA output indicator, the higher the voltage , the light intensity is more obvious ;
- 8 Module PCB size : 3.6cm * 2.3cm
- 9 standard double panel , thickness 1.6mm, nice layout , surrounded by a through hole , aperture : 3mm, convenient fixed
Three module interface description
This module expansion outside the left and right , respectively, 2-way pin header , 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 input interface 3
Right SCL IIC clock interface connected microcontroller IO port
SDA IIC digital interface connected microcontroller IO port
GND Module to external ground
VCC Power Interface External 3.3v-5v
Four modules use red short cap
There are three red module shorted cap, respectively function as follows :
- Connect the shorting cap P4 P4 , select thermistor access circuit
- Connect the shorting cap P5 P5 , select photoresistor access circuit
- Connect the shorting cap P6 P6 , select 0-5V Adjustable voltage access circuit
Terug naar overzicht
Andere klanten kochten ook
Schrijf een reactie
Let op !!
De feestdagen komen er aan. Daardoor is het extra druk bij PoslNL. Zendingen kunnen hierdoor vertraging oplopen bij PostNL.Bestel tijdig om teleurstellingen te voorkomen.
Met vriendelijk groet,
Team Bens electronics