Texas Instruments recommends a 4-layer PCB with a solid ground plane, and to keep the analog and digital signals separate. The analog input traces should be short and direct, and the digital output traces should be routed away from the analog inputs. Additionally, decoupling capacitors should be placed close to the device.
The ADS8329IRSAR outputs 16-bit data in a serial format. The data can be clocked out of the device using the SCLK pin, and the data is valid on the falling edge of the SCLK. The data should be latched into a microcontroller or FPGA on the rising edge of the SCLK. The data format is twos complement, and the output data rate is up to 500 kSPS.
The ADS8329IRSAR has a power-on reset (POR) circuit that resets the device to its default state when the power supply voltage rises above 1.5 V. The POR circuit ensures that the device is in a known state after power-up, and it takes approximately 10 ms for the device to become operational after power-up.
The ADS8329IRSAR does not require calibration. It has an internal calibration circuit that sets the gain and offset of the device. However, if the user wants to perform a system-level calibration, it can be done by applying a known input voltage and measuring the output code. The gain and offset can then be calculated and stored in the system's memory.
The maximum input voltage range of the ADS8329IRSAR is ±VREF, where VREF is the reference voltage pin. The VREF pin can be connected to a voltage source between 2.5 V and 5 V. The input voltage range can be adjusted by changing the VREF voltage.
ADS8329IRSAR datasheet
by Texas Instruments
