Isolated 4-Channel, Thermocouple/RTD Temperature Measurement System with 0.5 degree-C Accuracy based on ADT7310
使用 Analog Devices 的 AD7193BRUZ 的参考设计
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依据最终产品
- Industrial Automation HMI
- Industrial Programmable Logic Controllers (PLCs)
- Temperature Control System
说明
- Application Circuit is a completely isolated 4-channel temperature measurement circuit optimized for performance, input flexibility, robustness and low cost. It supports all types of thermocouples with cold junction compensation and any type of RTD (resistance temperature detector) with resistances up to 4k-Ohm for 2, 3, or 4-wire connection configurations. The RTD excitation current are is programmable for optimum noise and linearity performance. RTD measurements achieve 0.1 degree-C accuracy (typical) and Type-K thermocouple measurements achieve 0.05 degree-C typical accuracy because of the 16-bit ADT7310 digital temperature sensor used for cold-junction compensation. The circuit uses a four-channel AD7193, 24-bit sigma-delta ADC with on-chip PGA for high accuracy and low noise
Featured Parts (17)
| 零件编号 | 供应商 | 类别 | 说明 | |||
|---|---|---|---|---|---|---|
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ADR3440ARJZ-R7 | Analog Devices | Voltage References | V-Ref Precision 4.096V 10mA 6-Pin SOT-23 T/R | 买入 | |
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AD5201BRMZ10 | Analog Devices | Digital Potentiometers | Digital Potentiometer 10kOhm 33POS Volatile Linear 10-Pin MSOP Tube | 买入 | |
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ADG738BRUZ | Analog Devices | Analog Switch Multiplexers | Analog Multiplexer Single 8:1 16-Pin TSSOP Tube | 买入 | |
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AD5201BRMZ50-REEL7 | Analog Devices | Digital Potentiometers | Digital Potentiometer 50kOhm 33POS Volatile Linear 10-Pin MSOP T/R | 买入 | |
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ADG702BRJZ-REEL7 | Analog Devices | Analog Switch Multiplexers | Analog Switch Single SPST 5-Pin SOT-23 T/R | 买入 | |
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ADT7310TRZ | Analog Devices | Temperature and Humidity Sensors | Temp Sensor Digital Serial (4-Wire, SPI) 8-Pin SOIC N Tube | 买入 | |
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ADG738BRUZ-REEL7 | Analog Devices | Analog Switch Multiplexers | Analog Multiplexer Single 8:1 16-Pin TSSOP T/R | 买入 | |
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ADG738BRUZ-REEL | Analog Devices | Analog Switch Multiplexers | Analog Multiplexer Single 8:1 16-Pin TSSOP T/R | 买入 | |
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AD8603AUJZ-R2 | Analog Devices | Operational Amplifiers - Op Amps | Op Amp Single Low Noise Amplifier R-R I/O ±2.5V/5V 5-Pin TSOT T/R | 买入 | |
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AD5201BRMZ50 | Analog Devices | Digital Potentiometers | Digital Potentiometer 50kOhm 33POS Volatile Linear 10-Pin MSOP Tube | 买入 | |
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ADR3440ARJZ-R2 | Analog Devices | Voltage References | V-Ref Precision 4.096V 10mA 6-Pin SOT-23 T/R | 买入 | |
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AD8603AUJZ-REEL7 | Analog Devices | Operational Amplifiers - Op Amps | Op Amp Single Low Noise Amplifier R-R I/O ±2.5V/5V 5-Pin TSOT T/R | 买入 | |