Details

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BUY AD7714YNZ https://www.utsource.net/itm/p/7489077.html
24 Bit Analog to Digital Converter 3, 5 Input 1 Sigma-Delta 24-PDIP

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (VDD)	Operating supply voltage	2.7	-	5.25	V
Supply Current (IDD)	Supply current at 3 V, all channels powered down	-	200	-	μA
Supply Current (IDD)	Supply current at 3 V, all channels active	-	800	-	μA
Input Voltage Range	Differential input voltage range	-	-	VREF	V
Common-Mode Input Voltage Range	Common-mode input voltage range	VSS - 0.3	-	VDD + 0.3	V
Input Bias Current	Maximum input bias current	-	10	-	nA
Input Resistance	Input resistance	-	100	-	MΩ
Output Data Rate	Configurable output data rate	0.5	-	1600	Hz
Resolution	Effective resolution	-	16	-	bits
Signal-to-Noise Ratio (SNR)	Signal-to-noise ratio at 4.7 Hz output data rate	-	94	-	dB
Total Harmonic Distortion (THD)	Total harmonic distortion at 4.7 Hz output data rate	-	-100	-	dB
Power-Down Mode	Power-down mode current	-	2	-	μA
Operating Temperature Range	Temperature range for operation	-40	-	85	°C
Storage Temperature Range	Temperature range for storage	-65	-	150	°C

Instructions for Using the AD7714YNZ

1. Power Supply:

   • Connect the VDD pin to a power supply between 2.7 V and 5.25 V.
   • Connect the VSS pin to ground.

2. Reference Voltage:

   • The reference voltage (VREF) can be connected to an external reference or generated internally. Ensure that the input voltage range is within the limits of the reference voltage.

3. Input Configuration:

   • Connect the differential input signals to the appropriate input pins (AIN1, AIN2, etc.). Ensure that the common-mode input voltage is within the specified range.

4. Output Data Rate:

   • Configure the output data rate using the control registers. The AD7714 supports data rates from 0.5 Hz to 1600 Hz.

5. Power-Down Mode:

   • To reduce power consumption, use the power-down mode by setting the appropriate bit in the control register. The device will draw minimal current in this mode.

6. Reading Data:

   • Use the SPI interface to read data from the AD7714. Ensure that the communication protocol is correctly implemented to avoid errors.

7. Calibration:

   • Perform system calibration if necessary to ensure accurate measurements. This can be done using the internal calibration registers.

8. Temperature Considerations:

   • Operate the device within the specified temperature range to ensure reliable performance. Store the device within the storage temperature range to prevent damage.

9. Handling:

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

10. Layout and PCB Design:

    • Follow good PCB layout practices to minimize noise and interference. Keep signal traces short and use ground planes to shield sensitive analog signals.

(For reference only)