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's power pins.
The ADS7958SRGER 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 device can then be calibrated by adjusting the internal offset and gain registers. Texas Instruments provides a calibration procedure in the device's datasheet and application notes.
The maximum sampling rate of the ADS7958SRGER is 250 kSPS (kilo-samples per second). However, the actual sampling rate may be limited by the system's clock frequency, the conversion time, and the settling time of the analog input signal.
Yes, the ADS7958SRGER can be used in a multi-channel application. The device has a serial interface that allows multiple devices to be connected to a single microcontroller or DSP. The devices can be addressed individually using the chip select (CS) pin, and the data can be read from each device sequentially.
The ADS7958SRGER outputs 16-bit digital data in a serial format. The data can be read using a microcontroller or DSP, and then processed and stored as needed. The device also has a data ready (DRDY) pin that can be used to interrupt the microcontroller or DSP when the conversion is complete.
ADS7958SRGER datasheet
by Texas Instruments
