1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 V33S V33S V33V V33V V18V C14 GND GND GND 1 1 V33V V33V GND 6 7 R55 C12 0.1uF DC12V R55 U3 4K7 C13 1 8 4 4 R1 C1 R55 4K7 0.1uF 0.1uF A0 VCC 7 7 J3 R13 R55 4K7 2 7 K K 0R 10K GND A1 /WP GND 10pF/0603 4K7 1 3 A2 SCL 6 R24 100 IICSCL 2 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 3 GND IR C R 7 6 5 4 N N N N I I N N I I I I I I I I I I I I 4 GND SDA 5 R25 100 IICSDA 4 A D L - 0 I I I I B B B B G G G G G G G G R R R R R R R R KEY_IN U O X B B B B 24LC16 按 5 R4 1k R _ 按 6 R5 2k C2 S L S N GND D 按 7 R6 3k9 D D D D GND D 按 8 R12 6k8 0.1uF 按 9 10 2 1 0 11 U2 1 1 1 9 9 9 9 9 9
AN1154 Precision RTD Instrumentation for Temperature Sensing Author: Ezana Haile SOLUTION Microchip Technology Inc. This solution uses a common reference voltage to bias the RTD and the ADC which provides a ratio-metric
tweaks. TEMPERATURE There are many ways to measure temperature [4, 5, 6]. We could use thermocouples, RTDs, thermistors, diodes, ICs or thermal imagers (infrared cameras) to measure the temperature. Figure 21 shows a circuit based on the MCP9700 IC +25.1°C +26.1°C +26.3°C temperature sensor. Because all
resources: professionals efficiently identify Microchip devices that • AN895, “Oscillator Circuit For RTD Temperature Sensors”, DS00895 fit a particular design requirement. Available at no cost from the Microchip web site at www.microchip.com/ maps, the MAPS is an overall selection tool for Microchip’s
high-speed (3.4 MHz) mode. • Portable Instrumentation and Consumer Goods 2 • Temperature Sensing with RTD, Thermistor, and The I C address bits for the MCP3423 and MCP3424 Thermocouple are selected by using two external I 2C address selection pins (Adr0 and Adr1). The user can configure • Bridge Sensing
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