ADG798 Data Sheet
Rev. 0 | Page 16 of 20
TERMINOLOGY
V
DD
V
DD
is the most positive power supply potential.
V
SS
V
SS
is the most negative power supply in a dual-supply application.
In single-supply applications, tie V
SS
to ground at the device.
GND
GND is the ground (0 V) reference.
Sx
Sx are the source terminals and can be inputs or outputs.
D
D is the drain terminal and can be an input or an output.
Ax
Ax is the logic control input.
EN
EN is the active high enable.
R
ON
R
ON
is the ohmic resistance between D and Sx.
R
FLAT (ON)
R
FLAT (ON)
flatness is defined as the difference between the
maximum and minimum value of on resistance as measured
over the specified analog signal range.
I
S
(Off)
I
S
(Off) is the source leakage current with the switch off.
I
D
(Off)
I
D
(Off) is the drain leakage current with the switch off.
I
D
, I
S
(On)
I
D
, I
S
(On) is the channel leakage current with the switch on.
V
D
(V
S
)
V
D
(V
S
) is the analog voltage on Terminal D and Terminal Sx.
C
S
(Off)
C
S
(Off) is the off switch source capacitance and is measured with
reference to ground.
C
D
(Off)
C
D
(Off) is the off switch drain capacitance and is measured with
reference to ground.
C
D
, C
S
(On)
C
D
, C
S
(On) is the on switch capacitance and is measured with
reference to ground.
C
IN
C
IN
is the digital input capacitance.
t
TRANSITION
t
TRANSITION
is the delay time measured between the 50% and 90%
points of the digital inputs and the switch on condition when
switching from one address state to another.
t
ON
(EN)
t
ON
(EN) is the delay time between the 50% and 90% points of
the EN digital input and the switch on condition.
t
OFF
(EN)
t
OFF
(EN) is the delay time between the 50% and 90% points of
the EN digital input and the switch off condition.
t
OPEN
t
OPEN
is the off time measured between the 80% points of both
switches when switching from one address state to another.
Off Isolation
Off isolation is a measure of unwanted signal coupling through
an off switch.
Channel to Channel Crosstalk
Channel to channel crosstalk is a measure of unwanted signal
that is coupled through from one channel to another as a result
of parasitic capacitance.
Charge Injection
Charge injection is a measure of the glitch impulse transferred
from injection of the digital input to the analog output during
switching.
−3 dB Bandwidth
−3 dB bandwidth is the frequency at which the output is
attenuated by 3 dB.
On Response
On response is the frequency response of the on switch.
On Loss
On loss is the loss due to the on resistance of the switch.
V
INL
V
INL
is the maximum input voltage for Logic 0.
V
INH
V
INH
is the minimum input voltage for Logic 1.
I
INL
(I
INH
)
I
INL
(I
INH
) is the input current of the digital input.
I
DD
I
DD
is the positive supply current.
I
SS
I
SS
is the negative supply current.
