ADS1625IPAPR datasheet by Texas Instruments

ADS1625IPAPR Frequently Asked Questions (FAQs)

• What is the recommended layout and routing for the ADS1625IPAPR?
  The recommended layout and routing for the ADS1625IPAPR involves keeping the analog and digital signals separate, using a solid ground plane, and minimizing the length of the analog input traces. TI provides a reference design and layout guidelines in the datasheet and application notes.
• How do I calibrate the ADS1625IPAPR for optimal performance?
  The ADS1625IPAPR has an internal calibration mechanism that can be triggered through the SPI interface. The calibration process involves setting the CAL pin high, then low, and waiting for the CAL_DONE pin to go high. The device is then calibrated and ready for use.
• What is the maximum sampling rate I can achieve with the ADS1625IPAPR?
  The maximum sampling rate of the ADS1625IPAPR depends on the clock frequency and the number of channels being converted. With a 20MHz clock, the maximum sampling rate is approximately 100kSPS per channel. However, this can be increased to 200kSPS per channel by using the device's internal clock doubler.
• How do I handle the high-speed digital outputs of the ADS1625IPAPR?
  The ADS1625IPAPR's high-speed digital outputs require careful handling to avoid signal degradation and electromagnetic interference (EMI). TI recommends using a low-impedance transmission line, such as a 50-ohm microstrip, and terminating the lines with a 50-ohm resistor to match the output impedance of the device.
• What is the power consumption of the ADS1625IPAPR, and how can I reduce it?
  The power consumption of the ADS1625IPAPR depends on the operating mode and clock frequency. In normal operation, the device consumes around 35mW. To reduce power consumption, TI recommends using the device's power-down modes, reducing the clock frequency, and using the internal voltage regulator to reduce the supply voltage.