Details

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BUY AD7865BS-2 https://www.utsource.net/itm/p/12608795.html

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (VDD)	Operating supply voltage	4.75		5.25	V
Input Voltage Range	Analog input voltage range	0		VREF	V
Conversion Time	Time to convert one channel		8		渭s
Power Consumption	Total power consumption in normal mode		130		mW
Differential Nonlinearity	Maximum deviation from ideal step size between any two adjacent codes		卤1		LSB
Integral Nonlinearity	Deviation of the actual transfer function from the ideal		卤2		LSB
Offset Error	Difference between the actual and ideal output when input is zero		卤2		LSB
Gain Error	Ratio of actual full-scale range to theoretical full-scale range		卤2		% FS
Channel-to-Channel Isolation	Maximum leakage between channels		80		dB
Common Mode Rejection Ratio	Ability to reject common-mode signals		90		dB
Signal-to-Noise Ratio	Ratio of signal power to noise power		90		dB

Instructions for AD7865BS-2

1. Power Supply Configuration:

   • Connect the VDD pin to a stable 5V power supply within the specified range of 4.75V to 5.25V.
   • Ensure adequate decoupling capacitors are placed close to the power pins.

2. Reference Voltage Setup:

   • Connect the reference voltage (VREF) as per your application requirements. The input voltage range is from 0V to VREF.

3. Input Signal Connection:

   • Connect analog signals to the input channels ensuring they do not exceed the specified input voltage range.

4. Conversion Control:

   • Use the appropriate control signals (CONVST, CS, SCLK, SDI, and SDO) to initiate conversions and read data.
   • Ensure timing specifications for these control signals are strictly adhered to for reliable operation.

5. Output Data Handling:

   • After initiating a conversion, wait for the conversion time (typically 8渭s) before reading the output data via the serial interface.

6. Power Down Mode:

   • To reduce power consumption, use the power-down feature by setting the appropriate configuration bits.

7. Handling Multiple Channels:

   • For multi-channel applications, configure the channel selection according to the datasheet guidelines to ensure accurate sequential conversions.

8. Calibration:

   • Perform system-level calibration if necessary to correct for offset and gain errors, improving overall accuracy.

9. Environmental Considerations:

   • Operate the device within the recommended temperature range and avoid exposing it to excessive humidity or contaminants.

Note: Always refer to the official datasheet for detailed specifications and advanced configurations.

(For reference only)