The recommended power-up sequence is to apply VDD first, followed by VREF, and then the analog input signal. This ensures proper operation and prevents damage to the device.
To optimize the analog input impedance, use a low-impedance source (e.g., an op-amp buffer) and keep the input signal cables short and shielded. This minimizes noise and ensures accurate conversions.
The maximum sampling rate for the ADS7924 is 1 MSPS (million samples per second). However, this rate may vary depending on the specific application and system requirements.
To handle overvoltage protection, use external voltage-limiting resistors or clamping diodes to prevent voltage exceeding the maximum rating (VDD + 0.3V). This ensures device protection and prevents damage.
For optimal performance, use a 4-layer PCB with a solid ground plane, and keep analog and digital signals separate. Route analog signals away from digital signals and use shielding to minimize noise and crosstalk.
ADS7924IRTET datasheet
by Texas Instruments
