Datasheet

REV. C
ADG428/ADG429
–5–
ADG428 Truth Table
A2 A1 A0 EN WR RS ON SWITCH
Latching
XXXX
g 1 Maintains Previous
Switch Condition
Reset
XXXXX0 NONE
(Latches Cleared)
Transparent Operation
X X X 0 0 1 NONE
000101 1
001101 2
010101 3
011101 4
100101 5
101101 6
110101 7
111101 8
ADG429 Truth Table
A1 A0 EN WR RS ON SWITCH PAIR
Latching
XXX
g 1 Maintains Previous
Switch Condition
Reset
XXXX0 NONE
(Latches Cleared)
Transparent Operation
X X 0 0 1 NONE
001011
011012
101013
111014
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
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
TRANSITlON
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 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 A measure of the glitch impulse transferred
Injection from the digital input to the analog output
during switching.
I
DD
Positive supply current.
I
SS
Negative supply current.