VREF(+)
參數(shù)資料
型號: AD7835AP
廠商: Analog Devices Inc
文件頁數(shù): 11/28頁
文件大小: 0K
描述: IC DAC 14BIT QUAD PARA 44-PLCC
產品培訓模塊: Data Converter Fundamentals
DAC Architectures
標準包裝: 1
設置時間: 10µs
位數(shù): 14
數(shù)據(jù)接口: 并聯(lián)
轉換器數(shù)目: 4
電壓電源: 模擬和數(shù)字,雙 ±
功率耗散(最大): 465mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 44-LCC(J 形引線)
供應商設備封裝: 44-PLCC(16.59x16.59)
包裝: 管件
輸出數(shù)目和類型: 4 電壓,單極;4 電壓,雙極
采樣率(每秒): 100k
AD7834/AD7835
Rev. D | Page 19 of 28
POWER-ON OF THE AD7834/AD7835
VREF(+)
VREF(–)
AD78341
SD103C
1N5711
1N5712
1ADDITIONAL PINS OMITTED FOR CLARITY 01006-025
Power is normally applied to the AD7834/AD7835 in the
following sequence: first VDD and VSS, then VCC, and then
VREF(+) and VREF(). The VREF pins are not allowed to float when
power is applied to the part. VREF(+) is not allowed to go below
VREF() 0.3 V. VREF() is not allowed to go below VSS 0.3 V.
VDD is not allowed to go below VCC 0.3 V.
Figure 25. Power-On Protection
In some systems, it is necessary to introduce one or more
Schottky diodes between pins to prevent the above situations
arising at power-on. These diodes are shown in Figure 25.
However, in most systems, with careful consideration given to
power supply sequencing, the above rules are adhered to, and
protection diodes are not necessary.
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