MCP3424 Channel with Programmable Gain Amplifier SKU:DFR0316
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DFR0316 (pdf) |
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MCP3424 Channel with Programmable Gain Amplifier SKU:DFR0316 Contents • 1 Introduction • 2 Applications • 3 Specifications • 4 Interface • 5 Tutorial Measure Voltage by Arduino Measure Voltage by RPi Introduction The module integrates MCP3432 A/D converter chip. The module can provide analog input function for Raspberry Pi and provide high accuracy analog input for Arduino. MCP3424 is one of the low noise and high accuracy 18-Bit delta-sigma analog-to-digital A/D converter family members of the MCP342X series. Its characteristic is: • Self calibration of internal offset and gain per each conversion. • The user can select the PGA gain before the analog-to-digital conversion takes place. This allows the device to convert a very weak input signal with high resolution. • The device have two conversion modes: a One-Shot mode the device performs a single conversion and enters a low current standby mode automatically until it receives another conversion command. b Continuous mode the conversion takes place continuously at the set conversion speed. • Temperature Sensing with RTD, Thermistor, and Thermocouple • Bridge Sensing for Pressure, Strain, and Force • Weigh Scales • Battery Fuel Gauges Specifications • Operating Voltage - 5.5V • Standy Current 300nA • Operating Temperature -40°C ~ +125°C • On-Board Voltage Reference 2.048V ± Drift 15 PPM /°C • On-Board Programmable Gain Amplifier PGA x1,x2,x4,x8 • Differential Input Full Scale Range -2.048V / PGA ~ 2.048V / PGA e.g., PGA=4, Range is ~ 0.512V • Programmable Resolution 12, 14, 16, 18bits • Programmable Data Rate 240, 60, 15, SPS • Gain Error PGA = 1, 18bits • Offset Error 15uV PGA = 1, 18bits • Input Interface 4 differential channels, PIN header of 2.54mm spacing • Output Interface I2C, PIN header of 2.54mm spacing • Size 27x16mm Interface • Input and output pins showed in the diagram. • Switch set I2C address. Tutorial Measure Voltage by Arduino a Target Measure voltage by Arduino b Hardware List • DF_UNO 1 • MCP3432 module 1 • Regulated power or AA battery 1 • Dupont wires c Software List • Arduino IDE • Arduino MCP3424 library d Connected diagram e Step by step Adjust voltage of Regulated Power to 0-2.085V, and then power on. Install Arduino MCP3424 library, see Install Arduino MCP3424 library Open Arduino IDE Upload code to UNO /* MCP 3424 version example sketch OneShotConversion Written by Contact : In this example, one conversion per second is performed on channel 1 and 16 bits resolution. A new conversion has to be initiated by the user */ #include <Wire.h> #include <MCP3424.h> MCP3424 MCP 0x68 // Decaration of MCP3424 with Address of I2C long Voltage; void Serial.begin 9600 MCP.Configuration 1,16,0,1 // Channel 1, 16 bits resolution, one-shot mo de, amplifier gain = 1 void MCP.NewConversion // New conversion is initiated Voltage=MCP.Measure // Measure, note that the library waits for a comp lete conversion Serial.print "Voltage = " Serial.print Voltage Serial.println "uV" // unit microVolt delay 1000 ; f Result • Open Ardino serial monitor, the voltage will be displayed. Measure Voltage by RPi a Target Measure voltage by RPi b Hardware List • Raspberry Pi B+ 1 • Regulated power or AA battery 1 • Dupont wires c Software List • MCP3424 I2C Linux driver d Connected Diagram refer to the previous tutorial, connect I2C and power in the GPIO of RPi to the MCP3424 module. e Step by step refer to the "Readme" of the Driver. Powered By DFRobot 2008-2017 |
More datasheets: TR/3216FF-2.5A | TR/3216FF-500MA | TR/3216FF-5A | TR/3216FF-750MA | TR/3216FF-1A | TR/3216FF-1.5A | TR/3216FF-7A | XDK110 | RPS8-700U2-XE | 13721 |
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