參數(shù)資料
型號: AD7398BR-REEL
廠商: Analog Devices Inc
文件頁數(shù): 10/24頁
文件大小: 0K
描述: IC DAC 12BIT QUAD SRL 16-SOIC
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝: 1,000
設(shè)置時間: 6µs
位數(shù): 12
數(shù)據(jù)接口: 串行,SPI?
轉(zhuǎn)換器數(shù)目: 4
電壓電源: 雙 ±
功率耗散(最大): 16mW
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC W
包裝: 帶卷 (TR)
輸出數(shù)目和類型: 4 電壓,單極
采樣率(每秒): 167k
AD7398/AD7399
Rev. C | Page 18 of 24
APPLICATIONS INFORMATION
STAIRCASE WINDOWS COMPARATOR
Many applications need to determine whether voltage levels are
within predetermined limits. Some requirements are for
nonoverlapping windows and others for overlapping windows.
Both circuit configurations are shown in Figure 33 and
Figure 34, respectively.
02179-
033
AD8564
10k
+
+
WINDOW 1
V+
10k
+
+
WINDOW 2
V+
AD8564
10k
+
+
WINDOW 3
V+
10k
+
+
WINDOW 4
V+
1/2
AD8564
10k
+
+
WINDOW 5
V+
VTEST
VREF
AD7398/
AD7399
GND
VDD
VOUTA
VREFA
VOUTB
VREFB
VOUTC
VREFC
VOUTD
VREFD
Figure 33. Nonoverlapping Windows Comparator
02179-
034
VREF
VOUTA
VOUTB
VOUTC
VOUTD
GND
WINDOW 2
WINDOW 1
WINDOW 3
WINDOW 4
WINDOW 5
Figure 34. Nonoverlapping Windows Range
02179-
035
AD8564
10k
+
+
WINDOW 1
V+
10k
+
+
WINDOW 2
V+
1/2
AD8564
10k
+
+
WINDOW 3
V+
VTEST
VREF
AD7398/
AD7399
GND
VDD
VOUTA
VREFA
VOUTB
VREFB
VOUTC
VREFC
VOUTD
VREFD
Figure 35. Overlapping Windows Comparator
02179-
036
VREF
VOUTA
VOUTB
VOUTC
VOUTD
GND
WINDOW 1
WINDOW 2
WINDOW 3
Figure 36. Overlapping Windows Range
The nonoverlapping circuit employs one AD7398/AD7399 and
ten comparators to achieve five voltage windows. These windows
range between VREF and analog ground as shown in Figure 34.
Similarly, the overlapping circuit employs six comparators to
achieve three overlapping windows (see Figure 36).
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