Details

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BUY AD7876BN https://www.utsource.net/itm/p/164440.html
1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDIP24, 0.300 INCH, PLASTIC, MS-001, DIP-24

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD	-	2.7	-	5.25	V
Analog Input Range	VIN	-	0	-	VDD	V
Conversion Time	tCONV	12-bit, Single Conversion	-	13	-	μs
Power Consumption	IDD	Active Mode, VDD = 5V	-	1.2	-	mA
Power Consumption	IDD	Sleep Mode, VDD = 5V	-	0.1	-	μA
Differential Nonlinearity	DNL	-	-1	0	+1	LSB
Integral Nonlinearity	INL	-	-2	0	+2	LSB
Signal-to-Noise Ratio	SNR	-	-	74	-	dB
Total Harmonic Distortion	THD	-	-	-95	-	dB
Operating Temperature	Toperating	-	-40	-	+85	°C
Storage Temperature	Tstorage	-	-65	-	+150	°C

Instructions for Using AD7876BN

1. Power Supply:

   • Connect the VDD pin to a stable power supply within the range of 2.7V to 5.25V.
   • Connect the GND pin to the system ground.

2. Analog Input:

   • Connect the analog input signals to the appropriate input pins (AIN0, AIN1, etc.).
   • Ensure the input voltage is within the range of 0V to VDD.

3. Conversion:

   • Initiate a conversion by writing to the control register.
   • The conversion time for a 12-bit single conversion is approximately 13 μs.

4. Power Management:

   • To enter sleep mode, set the appropriate bit in the control register.
   • In sleep mode, the power consumption is reduced to 0.1 μA at VDD = 5V.

5. Calibration:

   • Perform a system calibration if required to ensure accurate conversions.
   • Calibration can be done using the internal reference or an external reference.

6. Data Output:

   • Read the conversion result from the data output register.
   • The data is available in binary format.

7. Temperature Considerations:

   • Operate the device within the temperature range of -40°C to +85°C for optimal performance.
   • Store the device in the temperature range of -65°C to +150°C.

8. Signal Integrity:

   • Use proper PCB layout techniques to minimize noise and ensure signal integrity.
   • Place decoupling capacitors close to the power supply pins to filter out high-frequency noise.

9. Software Interface:

   • Use the SPI interface to communicate with the AD7876BN.
   • Refer to the datasheet for specific command sequences and register configurations.

10. Troubleshooting:

    • If the device does not respond, check the power supply and connections.
    • Verify that the SPI communication settings match the device requirements.

(For reference only)