ADS7842EB/1K datasheet by Texas Instruments

ADS7842EB/1K Frequently Asked Questions (FAQs)

• What is the recommended power-up sequence for the ADS7842?
  The recommended power-up sequence is to apply VCC first, followed by VREF, and then the clock signal. This ensures proper initialization of the device.
• How do I handle the busy signal (BUSY) during conversion?
  The BUSY signal goes high during conversion and remains high until the conversion is complete. The host should wait for BUSY to go low before accessing the data.
• What is the maximum frequency of the clock signal (CLK) that can be used?
  The maximum frequency of the clock signal is 3.25 MHz. Exceeding this frequency may result in incorrect conversions or device malfunction.
• How do I calibrate the ADS7842 for optimal performance?
  Calibration involves adjusting the internal offset and gain of the device. TI provides a calibration procedure in the datasheet, which involves applying a known input voltage and adjusting the offset and gain registers accordingly.
• What is the effect of temperature on the ADS7842's performance?
  The ADS7842's performance is affected by temperature, with changes in offset, gain, and noise floor. TI provides temperature coefficients in the datasheet to help engineers compensate for these effects.