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 POR and BOR circuits in the ADS8324E/250 ensure that the device resets properly during power-up and power-down sequences. To handle these resets, the system designer should ensure that the power supply ramps up and down slowly, and that the device's reset pin is properly connected to a reset circuit or a microcontroller's reset input.
The ADS8324E/250 can operate with a clock frequency between 1 MHz and 4 MHz. A clock frequency of 2 MHz is recommended for most applications. The clock source can be an external clock signal or the device's internal oscillator. If using the internal oscillator, a 10 kΩ resistor and a 10 nF capacitor are required to be connected between the OSCIN pin and the OSCOUT pin.
The ADS8324E/250 has an internal calibration circuit that can be used to calibrate the device. The calibration process involves applying a known input voltage to the device and then reading the output code. The device's offset and gain errors can then be calculated and corrected using the calibration data. Texas Instruments provides a calibration procedure in the device's datasheet and application notes.
The maximum input voltage range for the ADS8324E/250 is 0 V to 5 V. If the input voltage exceeds this range, the device may be damaged. To handle input voltages beyond this range, an input voltage limiter or a voltage divider circuit can be used to attenuate the input signal. Additionally, the device's input overvoltage protection circuit can be used to protect the device from input voltages up to 7 V.
ADS8324E/250 datasheet
by Texas Instruments
