Texas Instruments recommends following a star-grounding scheme, keeping analog and digital grounds separate, and using a solid ground plane to minimize noise. Additionally, keep the input traces short and away from digital signals, and use a low-impedance source for the reference voltage.
The POR and BOR features are enabled by default. To handle them, ensure that the power supply ramps up slowly (typically 10ms to 100ms) to allow the device to reset properly. You can also use external circuitry to delay the power-on reset signal to the microcontroller until the power supply is stable.
The recommended clock frequency for the TLV1548CDBRG4 is between 1.5MHz and 4MHz. The conversion rate is dependent on the clock frequency, with a higher clock frequency resulting in a faster conversion rate. However, increasing the clock frequency also increases the power consumption and noise sensitivity.
Calibration involves adjusting the internal offset and gain of the ADC. Texas Instruments provides a calibration procedure in the datasheet, which involves applying a known input voltage and adjusting the offset and gain registers to achieve the desired accuracy. You can also use external calibration circuits or software algorithms to improve accuracy.
Temperature affects the ADC's accuracy, with a typical temperature coefficient of ±1ppm/°C. To compensate for temperature effects, you can use external temperature sensors and software algorithms to adjust the ADC's offset and gain. Alternatively, you can use temperature-compensated voltage references or precision resistors to minimize temperature-related errors.
TLV1548CDBRG4 datasheet
by Texas Instruments
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