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DAC7750IPWPR.B 数据表(PDF) 37 Page - Texas Instruments |
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DAC7750IPWPR.B 数据表(HTML) 37 Page - Texas Instruments |
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37 / 56 page  9.2 Typical Application ISO7631 DACX750 IOUT Current Output 0-20mA, 4-20mA, 0-24mA +24V 100nF 15 REFIN REFOUT GND HART-IN HART Signal FSK 1200- 2200Hz AVDD DVDD DVDD-EN +24V 0.1µF 0.1µF 22nF 100pF 0.1µF SCLK DIN SDO LATCH CLR ALARM 10k INC OUTA OUTB VCC2 GND2 0.1µF 0.1µF ISO7631 INC OUTA OUTB VCC2 GND2 VCC1 GND1 OUTC INA INB VCC1 GND1 OUTC INA INB Digital Controller GND VDD 0.1µF 0.1µF 0.1µF SCLK MOSI MISO CS GPIO GPIO Isolation Barrier +24V Field Supply Input Field GND Field Connections +24V Unidirectional TVS Diode Pair 10 Ω Figure 9-3. DACx750 in a Voltage and Current Output Driver for Factory Automation and Control, EMC and EMI Protected - DACx750 in an Analog Output (AO) Module 9.2.1 Design Requirements Analog I/O modules are used by programmable logic controllers (PLCs) and distributed control systems (DCSs) to interface to sensors, actuators, and other field instruments. These modules must meet stringent electrical specifications for both performance as well as protection. These outputs are typically current loops based on the 4-mA to 20-mA range. Common error budgets accommodate 0.1% full-scale range total unadjusted error (%FSR TUE) at room temperature. Designs which desire stronger accuracy over temperature frequently implement calibration. Often times the PLC back-plane provides access to a 12-V to 36-V analog supply, from which a majority of supply voltages are derived. www.ti.com DAC7750, DAC8750 SBAS538D – DECEMBER 2013 – REVISED DECEMBER 2021 Copyright © 2021 Texas Instruments Incorporated Submit Document Feedback 37 Product Folder Links: DAC7750 DAC8750 |
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