REV. A
–10–
ADG608/ADG609
A2
V
OUT
V
SS
V
DD
D
A1
A0
EN
GND
ADG608
R
L
1kΩ
V
SS
V
DD
S1
V
S
S2
S8
2.4V
1kΩ
Test Circuit 10. Channel-to-Channel Crosstalk
A2
V
OUT
V
SS
V
DD
D
A1
A0
EN
GND
ADG608
R
L
1kΩ
V
SS
V
DD
S1
V
S
S8
Test Circuit 9. OFF Isolation
TERMINOLOGY
V
DD
Most positive power supply potential.
V
SS
Most negative power supply potential in dual
supplies. In single supply applications, it may
be connected to ground.
GND Ground (0 V) reference.
R
ON
Ohmic resistance between D and S.
∆R
ON
R
ON
variation due to a change in the analog
input voltage with a constant load current.
R
ON
Match Difference between the R
ON
of any two
channels.
I
S
(OFF) Source leakage current when the switch is off.
I
D
(OFF) Drain leakage current when the switch is off.
I
D
, I
S
(ON) Channel leakage current when the switch is
on.
V
D
, V
S
Analog voltage on terminals D, S.
C
S
(OFF) Channel input capacitance for “OFF”
condition.
C
D
(OFF) Channel output capacitance for “OFF”
condition.
C
D
, C
S
(ON) “ON” switch capacitance.
C
IN
Digital input capacitance.
t
ON
(EN) Delay time between the 50% and 90% points
of the digital input and switch “ON”
condition.
t
OFF
(EN) Delay time between the 50% and 90% points
of the digital input and switch “OFF”
condition.
t
TRANSITION
Delay time between the 50% and 90% points
of the digital inputs and the switch “ON”
condition when switching from one address
state to another.
t
OPEN
“OFF” time measured between the 80%
points of both switches when switching from
one address state to another.
V
INL
Maximum input voltage for logic “0.”
V
INH
Minimum input voltage for logic “1.”
I
INL
(I
INH
) Input current of the digital input.
Crosstalk A measure of unwanted signal which is
coupled through from one channel to another
as a result of parasitic capacitance.
Off Isolation A measure of unwanted signal coupling
through an “OFF” channel.
Charge Injection A measure of the glitch impulse transferred
from the digital input to the analog output
during switching.
I
DD
Positive supply current.
I
SS
Negative supply current.
