Datasheet

ADG728/ADG729
–12–
SDA
V
DD
ADG728*
1nF
INPUT LOGIC
SWITCH OFF
SWITCH ON
V
OUT
C
L
V
S
R
S
⌬V
OUT
Q
INJ
= C
L
x ⌬V
OUT
D
* SIMILAR CONNECTION FOR ADG729
S
V
DD
SCL
GND
Test Circuit 6. Charge Injection
GND
ADG728*
50⍀
S1
S2
S8
* SIMILAR CONNECTION FOR ADG729
CHANNEL-TO-CHANNEL CROSSTALK = 20LOG
10
(V
OUT
/V
S
)
V
OUT
V
DD
R
L
V
DD
50⍀
V
S
D
Test Circuit 7. Channel-to-Channel Crosstalk
GND
ADG728*
50⍀
S1
S8
V
OUT
V
DD
R
L
V
DD
V
S
D
*SIMILAR CONNECTION FOR ADG729
OFF ISOLATION = 20LOG
10
(V
OUT
/V
S
)
V
OUT
WITHOUT SWITCH
INSERTION LOSS = 20LOG
10
V
OUT
WITH SWITCH
S1 IS SWITCHED OFF FOR OFF ISOLATION MEASURE-
MENTS AND ON FOR BANDWIDTH MEASUREMENTS
Test Circuit 8. Off Isolation and Bandwidth
REV. C