Texas Instruments provides a layout and routing guide in the application note 'ADS574x Layout and Routing Guidelines' (SLAA744). It recommends a symmetrical layout, minimizing trace lengths, and using a solid ground plane to reduce noise and improve performance.
To minimize EMI, use a low-inductance path for the digital outputs, keep the output traces short, and use a termination resistor close to the receiver. Additionally, consider using a low-power, low-voltage differential signaling (LVDS) interface or a serializer-deserializer (SerDes) interface to reduce EMI.
The recommended power-up sequence is to power up the analog supply (AVDD) first, followed by the digital supply (DVDD), and then the clock input (CLK). This sequence helps to prevent latch-up and ensures proper operation of the device.
The ADS574KE has an internal calibration circuit that can be enabled through the CAL pin. The calibration process involves applying a known input voltage and then reading the output code. The device can then be calibrated using an external microcontroller or DSP to adjust the gain and offset errors.
The maximum clock frequency for the ADS574KE is 65 MHz, but it can be operated at lower frequencies depending on the specific application requirements. The clock frequency should be chosen based on the desired sampling rate and the system's noise tolerance.
ADS574KE datasheet
by Texas Instruments
