adg2188 Analog Devices, Inc., adg2188 Datasheet - Page 15

• Manufacturer Part Number: adg2188
• Description: I 2 C Cmos 8 ? 8 Unbuffered Analog Switch Array With Dual/single Supplies
• Manufacturer: Analog Devices, Inc.

TEST CIRCUITS
The test circuits show measurements on one channel for clarity, but the circuit applies to any of the switches in the matrix.
V
V
S
0.1µF
OFF ISOLATION = 20 log
Figure 25. On Resistance
V
V
DD
DD
GND
X
X
R
ON
Y
V
V
SS
SS
I
V1
= V1/I
DS
V
0.1µF
Figure 30. Off Isolation
X
DS
Y
50Ÿ
V
V
X
V
0.1µF
OUT
R
S
X
X
V
V
0.1
DD
DD
µ
GND
F
V
V
V
V
SS
SS
X
DD
DD
R
50Ÿ
ANALYZER
Y
NETWORK
50Ÿ
L
GND
0.1µF
V
V
V
OUT
SS
SS
V
Y
X
V
0.1
X
R
300Ÿ
L
µ
Figure 28. Switching Times, t
F
1nF
C
I
L
Figure 29. Charge Injection
OFF
A
Figure 26. Off Leakage
C
35pF
Rev. 0 | Page 15 of 28
V
L
V
OUT
OUT
X
9TH DATA BIT
DATA BIT
V
V
Y
SW ON
OUT
OUT
I
OFF
ON
A
V
V
, t
Y
OFF
0.1µF
INSERTION LOSS = 20 log
Q
V
V
DD
DD
INJ
SW OFF
= C
GND
X
L
Y
V
V
× ûV
SS
SS
0.1µF
NC
Figure 31. Bandwidth
OUT
50%
90%
ûV
V
t
OFF
OUT
OUT
V
OUT
Figure 27. On Leakage
AND
WITHOUT SWITCH
X
WITH SWITCH
t
ON
Y
R
50Ÿ
ANALYZER
NETWORK
L
50Ÿ
V
OUT
V
I
X
ADG2188
ON
A
V
Y