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TI DAC8760 PLC 16位模拟输出模块参考设计方案

关键词:工业控制 可编逻辑控制器(PLC) DAC

时间:2014-05-14 09:45:49       作者:TI       来源:中电网

TI公司的DAC7760和DAC8760是低成本全集成12位和16位数模转换器(DAC),设计用于满足工业过程控制的要求,输出电流在4 mA-20 mA,0 mA- 20 mA或0 mA - 24 mA或输出电压在0 V-5 V,0 V-10 V,±5 V, 或±10 V,工作温度从–40℃到+125℃,主要用在4 mA-20 mA电流回路,模拟输出模,建筑物自动化相关设备,环境监测和可编逻辑控制器(PLC).本文介绍了DAC7760和DAC8760主要特性,框图, DACx760输出模块(AO)框图和DACx760评估模块主要特性,框图,电路图,材料清单与PCB元件布局图,以及PLC 16位模拟输出(AO)模块参考设计主要特性,电路图和材料清单.

16-Bit Analog Output Module Reference Design for Programmable Logic Controllers (PLC)

The DAC7760 and DAC8760 are low-cost, precision, fully-integrated, 12-bit and 16-bit digital-to-analog converters (DACs) designed to meet the requirements of industrial process-control applications. These devices can be programmed as a current output with a range of 4 mA to 20 mA, 0 mA to 20 mA, or 0 mA to 24 mA; or as a voltage output with a range of 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V, with a 10% overrange (0 V to 5.5 V, 0 V to 11 V, ±5.5 V, or ±11 V). Both current and voltage outputs can be simultaneously enabled while being controlled by a single data register.

These devices include a power-on-reset function to ensure powering up in a known state (both IOUT and VOUT are disabled and in a Hi-Z state). The CLR and CLR-SEL pins set the voltage o..

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