Details

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BUY AD7856ARZ https://www.utsource.net/itm/p/12612264.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD		4.75	5.0	5.25	V
Analog Input Range	VIN		0		VDD	V
Conversion Time	tCONV	100 kSPS		10		μs
Power Consumption	IDD	All channels on		30		mA
Output Data Rate	ODR			100		kSPS
Differential Nonlinearity	DNL		-1	0	+1	LSB
Integral Nonlinearity	INL		-2	0	+2	LSB
Signal-to-Noise Ratio	SNR	100 kSPS		78		dB
Total Harmonic Distortion	THD	100 kSPS		-85		dB
Operating Temperature	Toper		-40		85	°C
Storage Temperature	Tstg		-65		150	°C

Instructions for Using AD7856ARZ

1. Power Supply:

   • Connect the supply voltage (VDD) to a stable 5V source.
   • Ensure the power supply is clean and has low noise to avoid affecting the ADC performance.

2. Analog Inputs:

   • Connect the analog inputs (VIN) within the range of 0V to VDD.
   • Use differential inputs for better noise rejection and accuracy.

3. Conversion Control:

   • Start a conversion by asserting the START pin.
   • The conversion time is approximately 10 μs at 100 kSPS.
   • Monitor the BUSY pin to determine when the conversion is complete.

4. Data Output:

   • Read the conversion result from the data output pins (D0-D11).
   • Use the CS (Chip Select) and RD (Read) signals to control data read operations.

5. Clocking:

   • Provide an external clock signal to the CLK pin if using an external clock.
   • The internal oscillator can also be used for clock generation.

6. Temperature Considerations:

   • Operate the device within the temperature range of -40°C to 85°C.
   • Store the device between -65°C and 150°C.

7. Handling and ESD Protection:

   • Handle the device with care to avoid electrostatic discharge (ESD).
   • Use proper grounding and ESD protection during handling and assembly.

8. Layout and Grounding:

   • Use a ground plane to minimize noise and improve performance.
   • Keep analog and digital grounds separate and connect them at a single point near the ADC.

9. Decoupling Capacitors:

   • Place decoupling capacitors close to the power supply pins to filter out noise.
   • Typical values are 0.1 μF and 10 μF.

10. Testing and Calibration:

    • Perform initial testing with known input voltages to verify correct operation.
    • Calibrate the ADC if necessary to achieve optimal performance.

For detailed specifications and advanced features, refer to the AD7856ARZ datasheet provided by Analog Devices.

(For reference only)