Details

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BUY AD7799BRUZ-REEL https://www.utsource.net/itm/p/844469.html
3-Channel, Low Noise, Low Power, 24-Bit, Sigma Delta ADC with On-Chip In-Amp; Package: TSSOP; No of Pins: 16; Temperature Range: Industrial

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (VDD)	Operating supply voltage range	2.7	-	5.25	V
Quiescent Current	Supply current at 3.3V, all channels powered down	-	400	-	μA
Conversion Rate	Maximum conversion rate	-	16.7	1000	SPS (Samples per Second)
Input Range	Differential input range for unipolar operation	0	-	VREF	V
Input Range	Differential input range for bipolar operation	-VREF/2	-	VREF/2	V
Common Mode Rejection Ratio (CMRR)	At 50/60 Hz	95	-	-	dB
Power Supply Rejection Ratio (PSRR)	Over full operating range	80	-	-	dB
Temperature Range	Operating temperature range	-40	-	85	°C
Package	Type	-	-	-	24-lead SSOP
Pin Configuration	Number of pins	-	24	-	-

Instructions for Using AD7799BRUZ-REEL

1. Power Supply:

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

2. Reference Voltage:

   • The reference voltage (VREF) can be generated internally or externally. For internal reference, connect the REFIN1 and REFIN2 pins to VDD and VSS, respectively. For external reference, apply the desired reference voltage between REFIN1 and REFIN2.

3. Analog Inputs:

   • Connect the analog input signals to the appropriate differential input pairs (AIN1, AIN2, AIN3, AIN4).
   • Ensure the input signals are within the specified input range for unipolar or bipolar operation.

4. Digital Interface:

   • Use the SPI interface to communicate with the AD7799. The necessary pins are:
     • CS (Chip Select)
     • SCLK (Serial Clock)
     • DIN (Data In)
     • DOUT (Data Out)
   • Follow the SPI protocol for reading data and configuring the device.

5. Configuration:

   • Use the configuration registers to set up the device according to your application requirements. Key registers include:
     • MODE register: Sets the operating mode (continuous, single-shot, etc.)
     • CONFIG1 and CONFIG2 registers: Configure input channels, filter settings, and other parameters.

6. Calibration:

   • Perform system calibration if required to ensure accurate measurements. Calibration can be done using the internal or external zero-scale and full-scale references.

7. Temperature Considerations:

   • Ensure the operating temperature is within the specified range (-40°C to 85°C) to maintain performance and reliability.

8. Handling:

   • Handle the device with care to avoid damage from electrostatic discharge (ESD). Use proper ESD protection equipment and procedures.

9. Storage:

   • Store the device in a dry, cool environment to prevent moisture damage. Follow recommended storage conditions as specified in the datasheet.

For detailed information and specific application notes, refer to the AD7799 datasheet and application notes provided by Analog Devices.

(For reference only)