Details

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BUY AD7705BRUZ https://www.utsource.net/itm/p/12612651.html

Parameter	Description	Min	Typical	Max	Unit
Supply Voltage (VDD)	Operating supply voltage range	2.7	-	5.25	V
Quiescent Current (IDD)	Current consumption in normal operation	-	300	-	渭A
Shutdown Current (ISD)	Current consumption in shutdown mode	-	2	-	渭A
Input Range	Differential input voltage range	-	卤10	-	V
Resolution	Number of bits in the ADC	-	16	-	bits
Conversion Time	Time required for one conversion	-	8.33	-	ms
Output Data Rate	Rate at which data is output	1.5	-	17.9	Hz
Common-Mode Rejection Ratio (CMRR)	Ability to reject common-mode signals	90	-	-	dB
Power Supply Rejection Ratio (PSRR)	Ability to reject power supply variations	80	-	-	dB
Temperature Range	Operating temperature range	-40	-	85	掳C
Package Type	Type of package	-	DIP-16 or SOIC-16	-	-

Instructions for Using AD7705BRUZ

1. Power Supply:

   • Ensure the supply voltage (VDD) is within the range of 2.7V to 5.25V.
   • Connect the ground (GND) pin to the system ground.

2. Input Configuration:

   • Connect the differential input signals to the appropriate pins (AIN1, AIN2, AIN3, AIN4).
   • Ensure the input voltage does not exceed the specified range of 卤10V.

3. Configuration:

   • Use the control register to configure the ADC settings such as input channel selection, gain, and output data rate.
   • Write to the control register using the SPI interface.

4. Data Conversion:

   • Initiate a conversion by writing to the start register.
   • Wait for the conversion to complete based on the selected output data rate.
   • Read the conversion result from the data register.

5. Shutdown Mode:

   • To reduce power consumption, write to the control register to enter shutdown mode.
   • The device will consume approximately 2 渭A in this mode.

6. Temperature Considerations:

   • Ensure the operating temperature is within the range of -40掳C to 85掳C.
   • For optimal performance, avoid extreme temperatures.

7. SPI Interface:

   • Connect the SPI interface pins (SCLK, DIN, DOUT, CS) to the microcontroller or processor.
   • Follow the SPI protocol for communication with the AD7705BRUZ.

8. Decoupling Capacitors:

   • Place decoupling capacitors close to the power supply pins to minimize noise and ensure stable operation.
   • Recommended values are typically 0.1 渭F and 10 渭F.

9. Layout Considerations:

   • Keep analog and digital sections separate to minimize interference.
   • Use a ground plane to reduce noise and improve signal integrity.

10. Calibration:

    • Perform initial calibration to ensure accurate readings.
    • Follow the calibration procedure outlined in the datasheet for best results.

(For reference only)