參數(shù)資料
型號(hào): DG418DY-T1-E3
廠(chǎng)商: Vishay Siliconix
文件頁(yè)數(shù): 16/16頁(yè)
文件大?。?/td> 0K
描述: IC ANALOG SWITCH CMOS 8SOIC
標(biāo)準(zhǔn)包裝: 2,500
功能: 開(kāi)關(guān)
電路: 1 x SPST - NO
導(dǎo)通狀態(tài)電阻: 40 歐姆
電壓電源: 單/雙電源
電壓 - 電源,單路/雙路(±): 12V,±15V
電流 - 電源: 1nA
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOICN
包裝: 帶卷 (TR)
Document Number: 70051
S10-1528-Rev. G, 19-Jul-10
www.vishay.com
9
Vishay Siliconix
DG417, DG418, DG419
TEST CIRCUITS
APPLICATIONS
Switched Signal Powers Analog Switch
The analog switch in Figure 10 derives power from its input
signal, provided the input signal amplitude exceeds 4 V and
its frequency exceeds 1 kHz.
This circuit is useful when signals have to be routed to either
of two remote loads. Only three conductors are required: one
for the signal to be switched, one for the control signal and a
common return.
A positive input pulse turns on the clamping diode D1 and
charges C1. The charge stored on C1 is used to power the
chip; operation is satisfactory because the switch requires
less than 1 A of stand-by supply current. Loading of the
signal source is imperceptible. The DG419’s on-resistance is
a low 100
for a 5 V input signal.
Figure 9. Source/Drain Capacitances
VL
IN
S
V+
D
f = 1 MHz
- 15 V
GND
V-
C
0 V, 2.4 V
Meter
HP4192A
Impedance
Analyzer
or Equivalent
+ 5 V
C
+ 15 V
C
D2
D1
S1
f = 1 MHz
+ 15 V
IN
S2
NC
GND
V+
C
0 V, 2.4 V
Meter
HP4192A
Impedance
Analyzer
or Equivalent
DG417/418
DG419
VL
IN
S
D
f = 1 MHz
GND
C
0 V, 2.4 V
CC
D2
D1
S1
f = 1 MHz
IN
S2
NC
- 15 V
GND
V+
V-
C
0 V, 2.4 V
Meter
HP4192A
Impedance
Analyzer
or Equivalent
Figure 10. Switched Signal Powers Remote SPDT Analog Switch
Input
Control
GND
DG419
V-
C1
0.01 F
D1
S1
S2
VOUT
RL1
10 k
RL2
10 k
VL
D
IN
V+
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