Texas Instruments provides a layout and routing guide in the ADS7254IPW datasheet, which recommends keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the analog input traces. Additionally, it's recommended to use a 4-layer PCB with a dedicated analog power plane and a dedicated digital power plane.
To optimize the performance of the ADS7254IPW, it's recommended to use a low-noise power supply, decouple the power pins with capacitors, and use a high-quality analog input filter. Additionally, the analog input range should be set to the minimum required range to reduce noise, and the clock frequency should be set to the minimum required frequency to reduce jitter.
The maximum sampling rate of the ADS7254IPW is 1 MSPS (million samples per second), but this can be limited by the clock frequency, the analog input bandwidth, and the system noise. In practice, a sampling rate of up to 500 kSPS is typically achievable with a 5 MHz clock frequency and a 2.5 MHz analog input bandwidth.
The ADS7254IPW has a serial interface that can be connected to a microcontroller or FPGA using a SPI or I2C interface. The device requires a clock signal, a chip select signal, and data input/output lines. The interface protocol is described in the datasheet, and example code is available in the Texas Instruments documentation.
The power consumption of the ADS7254IPW depends on the clock frequency, the sampling rate, and the power-down mode. In normal operation, the device consumes around 15 mW. To minimize power consumption, the device can be put into power-down mode when not in use, and the clock frequency can be reduced to the minimum required value.
ADS7254IPW datasheet
by Texas Instruments
