To minimize noise and ensure optimal performance, it is recommended to follow a star-grounding scheme, keep analog and digital grounds separate, and use a solid ground plane. Additionally, keep the analog input traces short and away from digital signals, and use a low-ESR capacitor for the AVDD pin.
To optimize the ADC's performance, consider the following: choose the correct gain setting, adjust the sampling rate based on the input signal frequency, and use the internal reference voltage or an external reference voltage with low noise and high stability. Additionally, consider using a filter or amplifier before the ADC to condition the input signal.
The recommended power-up sequence is to power up the AVDD pin first, followed by the DVDD pin. This ensures that the analog circuitry is powered up before the digital circuitry, which helps to prevent latch-up and ensures proper device operation.
The ADS7042IDCUT outputs 12-bit data in a binary two's complement format. To handle the output data, you can use a microcontroller or FPGA with a 12-bit or 16-bit data bus. You may need to perform additional processing, such as scaling or offset correction, depending on your specific application.
The ADS7042IDCUT can handle input voltages up to the supply voltage (AVDD) minus 1.5V. Exceeding this voltage may cause damage to the device or affect its performance.
ADS7042IDCUT datasheet
by Texas Instruments
