ADI AD5780 18位精度低噪音±10 V DC电压源解决方案
ADI公司的AD5780是真正18位线性低噪音精密的±10 V DC电压源,工作电压双极电压高达33V,采用正基准输入电压从5V到VDD-2.5V,而负基准输入电压从VSS+2.5V到0V,输出噪音8 nV/√Hz,长期稳定性为0.025 LSB,增益误差±0.018 ppm/℃,输出电压设定时间2.5 μs, 施密特触发器数字接口35MHz,1.8V兼容数字接口,主要用在医疗仪器,测试测量,工业控制,数据采集系统,数字增益和失调调整,电源控制等.本文介绍了AD57801产品亮点和主要特性, 功能框图和典型工作电路图以及评估板EVAL-AD5780主要特性,电路图,材料清单和PCB布局图.
The AD57801 is a true 18-bit, unbuffered voltage output DAC that operates from a bipolar supply of up to 33 V. The AD5780 accepts a positive reference input range of 5 V to VDD − 2.5 V and a negative reference input range of VSS + 2.5 V to 0 V. Both reference inputs are buffered on chip and external buffers are not required. The AD5780 offers a relative accuracy specifica-tion of ±1 LSB maximum range, and operation is guaranteed monotonic with a ±1 LSB DNL maximum range specification.
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