Texas Instruments provides a layout and routing guide in the ADC3443 application note (SLAA544) that recommends a star-ground configuration, separate analog and digital grounds, and careful routing of sensitive analog signals to minimize noise and interference.
The ADC3443IRTQT has an internal calibration feature that can be initiated through the CAL pin. Additionally, external calibration can be performed using an external voltage reference and adjusting the offset and gain registers. Refer to the datasheet and application notes for detailed calibration procedures.
The maximum sampling rate of the ADC3443IRTQT is 500 kSPS. However, the actual achievable sampling rate depends on the clock frequency, conversion mode, and other factors. Higher sampling rates increase power consumption, which can be estimated using the power consumption calculator tool provided by Texas Instruments.
The ADC3443IRTQT has internal overvoltage protection up to 6 V, but it's recommended to use external protection circuits, such as voltage dividers or clamping diodes, to prevent damage from higher voltages. Undervoltage conditions can be handled by using a voltage reference with a buffer amplifier or a voltage regulator to ensure a stable input voltage.
The recommended power-up sequence is to apply the analog power supply (AVDD) first, followed by the digital power supply (DVDD), and then the clock signal. This ensures that the internal voltage regulators and analog circuits are properly initialized before the digital logic is enabled.
ADC3443IRTQT datasheet
by Texas Instruments
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