PCF8593P datasheet by NXP Semiconductors

PCF8593P Frequently Asked Questions (FAQs)

• What is the maximum frequency of the analog-to-digital converter (ADC) in PCF8593P?
  The maximum frequency of the ADC in PCF8593P is 40 kHz, which is the maximum clock frequency of the I2C bus.
• How to handle the output voltage of the digital-to-analog converter (DAC) in PCF8593P?
  The output voltage of the DAC in PCF8593P is a current output, so a resistor (typically 1 kΩ to 10 kΩ) is required to convert the current to a voltage.
• What is the purpose of the internal reference voltage in PCF8593P?
  The internal reference voltage in PCF8593P is used as a reference for the ADC and DAC conversions, and it can also be used as an output voltage reference for external circuits.
• How to configure the PCF8593P for 4-channel ADC operation?
  To configure the PCF8593P for 4-channel ADC operation, the control register (CR) must be set to select the desired channel, and the ADC must be triggered by writing to the ADC control register (ADC_CR).
• What is the settling time of the DAC output in PCF8593P?
  The settling time of the DAC output in PCF8593P is typically around 10 μs, but it can vary depending on the output load and the desired accuracy.