Cypress CY8CKIT-025, Руководство пользователя

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CY8CKIT-025 PSoC® Precision Analog Temperature Sensor Expansion Board Kit Guide, Doc. # 001-65791 Rev. *J 42
Example Projects
5.2.3.2 Component Configuration
5.2.3.2.1 ADC Configuration Settings
The ADC is configured in 20-bit mode for all sensors except the thermistor, where it is configured in
16-bit mode.
Figure 5-6 shows the configuration used.
Figure 5-6. ADC Configuration
The ADC Buffer Mode is set to
Level Shift
because many of the voltages being read are near VSS;
this setting yields better ADC results for signals near VSS.
5.2.3.2.2 IDAC Configuration
The IDAC is configured in the 0 to 255 µA-range. The IDAC is used for RTD and diode temperature
measurements. The IDAC data register value is modified in firmware, as required for each of these
temperature measurements.