Details

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BUY AD7190BRUZ https://www.utsource.net/itm/p/4123051.html
4.8 kHz Ultralow Noise 24-Bit Sigma-Delta ADC with PGA

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (VDD)	Operating supply voltage	2.7	-	5.25	V
Reference Voltage (VREF)	Internal reference voltage	2.5	4.096	-	V
Input Range	Differential input range	±2.5	-	±4.096	V
Input Impedance	Differential input impedance	-	10	-	GΩ
Common-Mode Rejection Ratio (CMRR)	Common-mode rejection ratio at 50/60 Hz	-	110	-	dB
Power Supply Rejection Ratio (PSRR)	Power supply rejection ratio at 50/60 Hz	-	110	-	dB
Noise-Free Code Resolution	Number of noise-free bits at 4.7 SPS	-	23	-	bits
Output Data Rate	Programmable output data rate	0.78125	-	4700	SPS
Integral Nonlinearity (INL)	Integral nonlinearity error	-	±1	-	LSB
Differential Nonlinearity (DNL)	Differential nonlinearity error	-	±1	-	LSB
Offset Error	Initial offset error	-	±1	-	LSB
Gain Error	Initial gain error	-	±10	-	ppm
Temperature Coefficient (Offset)	Temperature coefficient of offset	-	±0.01	-	LSB/°C
Temperature Coefficient (Gain)	Temperature coefficient of gain	-	±0.1	-	ppm/°C
Operating Temperature Range	Ambient operating temperature range	-40	-	125	°C
Storage Temperature Range	Storage temperature range	-65	-	150	°C
Package	Package type	-	-	-	24-lead TSSOP
Pin Configuration	Pin configuration	-	-	-	See datasheet

Instructions for Using AD7190BRUZ:

1. Power Supply:

   • Ensure the supply voltage (VDD) is within the range of 2.7V to 5.25V.
   • Connect the reference voltage (VREF) to the appropriate pin if using an external reference.

2. Input Configuration:

   • Configure the differential inputs (AIN1, AIN2, etc.) based on the desired input range (±2.5V or ±4.096V).
   • Ensure the common-mode voltage is within the specified range for proper operation.

3. Output Data Rate:

   • Set the output data rate (ODR) using the configuration registers. The ODR can be programmed from 0.78125 SPS to 4700 SPS.

4. Calibration:

   • Perform initial calibration to correct for offset and gain errors. This can be done using the internal self-calibration or system calibration features.

5. Noise Management:

   • For low-noise applications, use the lower output data rates to achieve higher noise-free code resolution.

6. Temperature Considerations:

   • Monitor the temperature to ensure it stays within the operating range (-40°C to 125°C). Use the temperature coefficients to account for drift.

7. Pin Connections:

   • Refer to the pin configuration section of the datasheet for detailed information on connecting the pins.

8. Communication:

   • Use the SPI interface to communicate with the AD7190BRUZ. Ensure the communication protocol is correctly implemented.

9. Power-Up Sequence:

   • Follow the recommended power-up sequence to avoid any potential issues during initialization.

10. Storage and Handling:

    • Store the device in a controlled environment within the storage temperature range (-65°C to 150°C).
    • Handle the device with care to prevent damage from electrostatic discharge (ESD).

For more detailed information, refer to the AD7190BRUZ datasheet and application notes provided by Analog Devices.

(For reference only)