Details

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BUY AD7657BSTZ https://www.utsource.net/itm/p/4157647.html
250 kSPS, 6-Channel,Simultaneous Sampling, Bipolar 12/14/16-Bit ADC

Parameter	Description	Min	Typ	Max	Unit
Input Voltage Range	Differential input voltage range	-5		+5	V
Resolution	Number of bits		16		bits
Conversion Time	Time required for a conversion		2.4		μs
Power Supply	Operating power supply voltage	4.75		5.25	V
Analog Input Bandwidth	Frequency range for analog input signal		10		MHz
Output Data Rate	Maximum output data rate		200		kSPS
SNR (Signal-to-Noise)	Signal-to-noise ratio		93		dB
THD (Total Harmonic Distortion)	Total harmonic distortion relative to the fundamental frequency		-98		dB
INL (Integral Nonlinearity)	Linearity error over the full scale range		±2		LSB
DNL (Differential Nonlinearity)	Difference between actual and ideal step size		±1		LSB

Instructions for AD7657BSTZ:

1. Power Supply Connections:

   • Connect the power supply pins to a stable 5V supply within the specified range (4.75V to 5.25V).

2. Analog Input Configuration:

   • Ensure that the differential input voltage does not exceed the specified range (-5V to +5V).
   • Properly terminate any unused inputs to avoid noise pickup.

3. Conversion Initiation:

   • Use the appropriate control signals or commands as specified in the device's datasheet to initiate conversions.
   • Refer to the timing diagrams provided in the datasheet for correct signal sequencing.

4. Data Retrieval:

   • After each conversion, retrieve the data using the SPI interface or other communication protocols supported by the ADC.
   • Ensure proper synchronization with the ADC’s clock to avoid data corruption.

5. Calibration:

   • Perform system calibration if necessary to correct for any offset or gain errors.
   • Follow the calibration procedure outlined in the device's application notes.

6. Handling High-Speed Signals:

   • For optimal performance, especially at higher frequencies, ensure that PCB layout guidelines are followed to minimize noise and reflections.
   • Keep analog and digital grounds separate and connect them at a single point near the ADC.

7. Operating Temperature:

   • The device is designed to operate within a temperature range of -40°C to +85°C. Ensure that operating conditions do not exceed these limits.

8. Storage and Handling:

   • Store the device in a dry environment and handle with care to prevent electrostatic discharge (ESD) damage.
   • Follow ESD protection guidelines during handling and assembly.

For detailed specifications and additional instructions, refer to the official AD7657BSTZ datasheet from Analog Devices.

(For reference only)