Texas Instruments provides a layout and routing guide in the application note SLAA554, which recommends keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the analog input traces.
The ADS7818E/2K5 has an internal calibration circuit that can be used to calibrate the device. The calibration process involves applying a known input voltage and then reading the output code. The gain and offset errors can then be calculated and corrected. Texas Instruments provides a calibration procedure in the application note SLAA555.
The maximum sampling rate of the ADS7818E/2K5 is 250 kSPS. However, the actual sampling rate may be limited by the system clock frequency, the conversion time, and the settling time of the analog input signal.
Yes, the ADS7818E/2K5 can be used in a multi-channel application by using multiple devices or by using a multiplexer to switch between multiple analog input channels. However, the multiplexer must be designed to minimize the settling time and ensure that the analog input signal is stable before the conversion starts.
The ADS7818E/2K5 outputs 16-bit digital data in a serial format. The data can be handled using a microcontroller or a digital signal processor. The data can be processed and converted to a human-readable format using software or firmware.
ADS7818E/2K5 datasheet
by Texas Instruments
