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 77
Example Projects
5.4.3.1 Project Schematic
Figure 5-36 shows the PSoC Creator schematic of the project.
Figure 5-36. PSoC Creator Schematic
A four-channel ADC is used to measure the voltages across the RTD, diode, RTD/diode current cal-
ibration resistor, and potentiometer, which simulates an analog temperature sensor. IDAC is used to
provide the excitation currents for the diode, RTD, and calibration resistor. The closed loop fan con-
troller component senses and controls the fan speed.
Application notes AN60590 and AN70698 provide detailed explanations on temperature measure-
ment using diode and RTD, respectively. Application note AN66627 describes the fan controller
operation in detail.
5.4.3.2 Component Configuration
Figure 5-37 and Figure 5-38 show the FanController component configuration.