[原创] TI DAC8775四路模拟输出模块参考设计TIPD215

TI公司的DAC8775是具有自适应功率管理的四路全集成16位数模转换器(DAC),可编程电流和电压输出,自适应功率管理可使芯片的功耗最小化,工作电压+12 V到+36 V,工作温度–40°C到+125°C,主要用在4mA-20mA电流回路,模拟输出模块,PLC,建筑物自动化,传感器发送器和过程控制.本文介绍了DAC8775主要特性,框图,以及具有自适应功耗管理的总功耗小于1W的四路模拟输出模块TIPD215参考设计主要特性,框图,电路图,材料清单和PCB设计图.

The DAC8775 is a quad-channel precision, fullyintegrated, 16-bit, digital-to-analog converter (DAC)with adaptive power management, and is designed tomeet the requirements of industrial controlapplications. The adaptive power managementcircuit, when enabled, minimizes the powerdissipation of the chip. When programmed as acurrent output, the supply voltage on the currentoutput driver is regulated between 4.5 V and 32 Vbased on continuous feedback of voltage on thecurrent output pin via an integrated buck/boostconverter. When programmed as a voltage output,this circuit generates a programmable supply voltagefor the voltage output stage (±15 V). DAC8775 alsocontains an LDO to generate the digital supply (5 V)from a single power supply pin.

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