参数资料
型号: AD7834AR
厂商: Analog Devices Inc
文件页数: 10/28页
文件大小: 0K
描述: IC DAC 14BIT QUAD SRL 28-SOIC
产品培训模块: Data Converter Fundamentals
DAC Architectures
标准包装: 1
设置时间: 10µs
位数: 14
数据接口: 串行
转换器数目: 4
电压电源: 模拟和数字,双 ±
功率耗散(最大): 465mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
输出数目和类型: 4 电压,单极;4 电压,双极
采样率(每秒): 100k
AD7834/AD7835
Rev. D | Page 18 of 28
DSG VOLTAGE RANGE
During power-on, the VOUT pins of the AD7834/AD7835 are
connected to the relevant DSG pins via G6 and the thin-film
resistor, R. The DSG potential must obey the maximum ratings
at all times. Thus, the voltage at DSG must always be within the
range VSS – 0.3 V to VDD + 0.3 V. However, to keep the voltages
at the VOUT pins of the AD7834/AD7835 within ±2 V of the
relevant DSG potential during power-on, the voltage applied to
DSG should also be kept within the range AGND – 2 V to
AGND + 2 V.
Once the AD7834/AD7835 have powered on and the on-chip
amplifiers have settled, the situation is as shown in Figure 23.
Any voltage subsequently applied to the DSG pin is buffered by
the same amplifier that buffers the DAC output voltage in
normal operation. Thus, for specified operations, the maximum
voltage applied to the DSG pin increases to the maximum
allowable VREF(+) voltage, and the minimum voltage applied to
DSG is the minimum VREF() voltage. After the AD7834 or
AD7835 has fully powered on, the outputs can track any DSG
voltage within this minimum/maximum range.
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