ADS7864Y/250G4 datasheet by Texas Instruments

ADS7864Y/250G4 Frequently Asked Questions (FAQs)

• What is the recommended layout and routing for the ADS7864Y/250G4 to minimize noise and ensure optimal performance?
  Texas Instruments provides a layout and routing guide in the application note SLAA523, which recommends a star-ground configuration, separate analog and digital grounds, and careful routing of sensitive analog signals.
• How do I properly configure the ADS7864Y/250G4 for differential or pseudo-differential input modes?
  The ADS7864Y/250G4 can be configured for differential or pseudo-differential input modes by setting the appropriate bits in the control register. Refer to the datasheet section 7.3.1 for detailed information on configuring the input mode.
• What is the maximum sampling rate I can achieve with the ADS7864Y/250G4, and what are the limitations?
  The maximum sampling rate of the ADS7864Y/250G4 is 250 kSPS. However, the actual achievable sampling rate may be limited by the system clock frequency, analog input bandwidth, and digital output data rate.
• How do I handle the digital output data from the ADS7864Y/250G4, and what is the recommended data processing flow?
  The ADS7864Y/250G4 outputs 16-bit digital data in a serial format. The recommended data processing flow involves synchronizing the data with the clock signal, performing data alignment and formatting, and applying digital filtering or processing as needed.
• What are the power supply requirements for the ADS7864Y/250G4, and how do I ensure proper power supply decoupling?
  The ADS7864Y/250G4 requires a single 2.7V to 5.5V power supply. Proper power supply decoupling involves using a combination of ceramic and electrolytic capacitors, as well as a low-ESR capacitor, to filter out noise and ensure stable operation.