參數資料
型號: ADG5209BRUZ-RL7
廠商: Analog Devices Inc
文件頁數: 13/24頁
文件大?。?/td> 0K
描述: IC MULTIPLEXER 1X4:1 16TSSOP
標準包裝: 1,000
功能: 多路復用器
電路: 1 x 4:1
導通狀態(tài)電阻: 170 歐姆
電壓電源: 單/雙電源
電壓 - 電源,單路/雙路(±): 9 V ~ 40 V,± 9 V ~ 22 V
電流 - 電源: 80µA
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 16-TSSOP
包裝: 帶卷 (TR)
ADG5208/ADG5209
Data Sheet
Rev. A | Page 20 of 24
TRENCH ISOLATION
In the ADG5208/ADG5209, an insulating oxide layer (trench)
is placed between the NMOS and the PMOS transistors of each
CMOS switch. Parasitic junctions, which occur between the
transistors in junction isolated switches, are eliminated, and the
result is a completely latch-up proof switch.
In junction isolation, the N and P wells of the PMOS and
NMOS transistors form a diode that is reverse-biased under
normal operation. However, during overvoltage conditions, this
diode can become forward-biased. A silicon controlled rectifier
(SCR) type circuit is formed by the two transistors, causing a
significant amplification of the current that, in turn, leads to
latch-up. With trench isolation, this diode is removed, and the
result is a latch-up proof switch.
NMOS
PMOS
P WELL
N WELL
BURIED OXIDE LAYER
HANDLE WAFER
TRENCH
09917-
038
Figure 37. Trench Isolation
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