ADG708 查看數據表（PDF） - Analog Devices
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ADG708 Datasheet PDF : 20 Pages
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ADG708/ADG709
Data Sheet
VDD
VSS
3V
VDD
VSS
A2
S1
VS
A1
A0
S2 TO S8
ADG708*
ENABLE
DRIVE (VIN)
0V
VO
EN
D
VOUT
OUTPUT
VIN
50Ω
GND
RL
300Ω
CL
35pF
0V
*SIMILAR CONNECTION FOR ADG709.
RS
VS
VIN
VDD VSS
A2 VDD VSS
A1
A0 ADG708*
S
D
EN
GND
Figure 26. Enable Delay, tON (EN), tOFF (EN)
3V
LOGIC INPUT
(VIN)
0V
CL VOUT
1nF
VOUT
50%
50%
0.9VO
tOFF (EN)
0.9VO
tON (EN)
QINJ = CL × ΔVOUT
ΔVOUT
*SIMILAR CONNECTION FOR ADG709.
VDD
0.1µF
Figure 27. Charge Injection
VSS
0.1µF
VDD
VSS
A2
A1
S
A0
50Ω
D
2.4V
EN
GND
NETWORK
ANALYZER
50Ω
VS
VOUT
RL
50Ω
OFF ISOLATION = 20 log VOUT
VS
Figure 28. Off Isolation
VDD
0.1µF
VSS
0.1µF
NETWORK
ANALYZER
50Ω
VS
A2 VDD
A1
VSS
EN
A0 ADG708*
50Ω S1
D
S2
S8 GND
2.4V
NETWORK
ANALYZER
VOUT
RL
50Ω
*SIMILAR CONNECTION FOR ADG709.
CHANNEL-TO-CHANNEL CROSSTALK = 20 log
VOUT
VS
Figure 29. Channel-to-Channel Crosstalk
Rev. D | Page 16 of 20
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