Details

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BUY AD7820KN https://www.utsource.net/itm/p/443026.html
LC2MOS HIGH-SPEED uP-COMPATIBLE 8-BIT ADC WITH TRACK/HOLD FUNCTION

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Supply Voltage	VDD	Operating	4.5	-	5.5	V
Analog Input Range	VIN		0	-	VREF	V
Reference Voltage	VREF		2.5	-	5.0	V
Conversion Time	tC	12-bit conversion	-	33	-	μs
Power Consumption	IDD	Active mode	-	1.5	-	mA
Power Consumption	IDD	Standby mode	-	10	-	μA
Output Data Rate	fODR		0	-	200	kSPS
Differential Nonlinearity (DNL)	DNL		-1	0	+1	LSB
Integral Nonlinearity (INL)	INL		-2	0	+2	LSB
Offset Error	VOFF		-10	0	+10	mV
Gain Error	GERR		-0.5	0	+0.5	% FS
Temperature Range	Toper	Operating	-40	-	+85	°C

Instructions for Using AD7820KN

1. Power Supply:

   • Connect the supply voltage (VDD) to a stable 5V source.
   • Ensure the reference voltage (VREF) is within the specified range (2.5V to 5.0V).

2. Analog Input:

   • Connect the analog input signal (VIN) to the appropriate pin.
   • Ensure the input voltage does not exceed the reference voltage (VREF).

3. Conversion:

   • Initiate a conversion by writing to the control register.
   • The conversion time is typically 33 μs for a 12-bit conversion.

4. Data Output:

   • Read the conversion result from the data output register.
   • The output data rate can be up to 200 kSPS.

5. Standby Mode:

   • To enter standby mode, write the appropriate command to the control register.
   • Power consumption in standby mode is approximately 10 μA.

6. Error Handling:

   • Monitor the differential nonlinearity (DNL) and integral nonlinearity (INL) to ensure accurate conversions.
   • Check for offset error (VOFF) and gain error (GERR) to maintain calibration.

7. Temperature Considerations:

   • Ensure the operating temperature is within the specified range (-40°C to +85°C).

8. Pin Configuration:

   • Refer to the datasheet for the specific pinout and connections.

9. Communication Protocol:

   • Use the SPI or I2C communication protocol as specified in the datasheet for interfacing with the AD7820KN.

10. Software Initialization:

    • Initialize the device by setting the appropriate configuration registers according to the application requirements.

For detailed information and specific application notes, refer to the AD7820KN datasheet and application notes provided by the manufacturer.

(For reference only)