Details

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BUY MCP3208-CI/P https://www.utsource.net/itm/p/535073.html
A/D Converters

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Supply Voltage	VDD	4.5	-	5.5	V
Supply Current	IDD	-	1.0	-	mA
Analog Input Voltage	VIN	0	-	VDD	V
Conversion Time	tconv	-	62.5	-	μs
Resolution	-	-	12-bit	-	bits
Differential Inputs	-	-	8	-	channels
Operating Temperature	Toper	-40	-	85	°C
Storage Temperature	Tstg	-65	-	150	°C
Digital Output Voltage	Vout	0	-	VDD	V
Output Current (Source)	Iout	-	1.0	-	mA
Output Current (Sink)	Iout	-	1.0	-	mA

Instructions for Using the MCP3208-CI/P

1. Power Supply:

   • Connect the VDD pin to a 4.5V to 5.5V power supply.
   • Connect the GND pin to the ground.

2. Analog Inputs:

   • Connect the analog signals to the differential input channels (CH0 to CH7).
   • Ensure that the input voltage does not exceed the supply voltage (VDD).

3. Digital Interface:

   • The MCP3208 uses a SPI (Serial Peripheral Interface) for communication.
   • Connect the following pins to your microcontroller:
     • CS (Chip Select): Active low, used to initiate communication.
     • SCK (Serial Clock): Provides the clock signal for data transfer.
     • MOSI (Master Out Slave In): Used to send commands from the microcontroller to the ADC.
     • MISO (Master In Slave Out): Used to receive data from the ADC to the microcontroller.

4. Communication Protocol:

   • To start a conversion:
     • Pull the CS pin low.
     • Send a start bit followed by the configuration bits to select the channel and mode (single/differential).
     • The ADC will begin the conversion process.
   • After the conversion is complete:
     • The ADC will send the 12-bit result over the MISO line.
     • The result is sent most significant bit (MSB) first.
   • Once the data is received, pull the CS pin high to end the communication.

5. Operating Temperature:

   • Ensure that the operating temperature is within the range of -40°C to 85°C for reliable operation.

6. Storage Temperature:

   • Store the device in a temperature range of -65°C to 150°C to avoid damage.

7. Handling Precautions:

   • Handle the device with care to avoid static discharge.
   • Use proper ESD (Electrostatic Discharge) protection when handling the device.

8. Example Code (Pseudocode):

   // Initialize SPI interface
   initialize_spi();
   
   // Select the channel (e.g., CH0)
   channel = 0;
   
   // Start conversion
   cs_low();
   send_start_bit();
   send_configuration_bits(channel);
   cs_high();
   
   // Wait for conversion to complete
   delay(62.5);  // 62.5 μs
   
   // Read the result
   cs_low();
   result = read_12_bits_from_miso();
   cs_high();
   
   // Process the result
   process_result(result);
   

This table and the instructions should help you effectively use the MCP3208-CI/P ADC in your projects.

(For reference only)