Datasheet

ADG738/ADG739 Data Sheet
Rev. A | Page 14 of 20
TERMINOLOGY
V
DD
Most positive power supply potential.
I
DD
Positive supply current.
GND
Ground (0 V) reference.
S
Source terminal. May be an input or output.
D
Drain terminal. May be an input or output.
V
D
(V
S
)
Analog voltage on Terminal D, Terminal S.
R
ON
Ohmic resistance between D and S.
∆R
ON
On resistance match between any two channels, that is, R
ON
max
− R
ON
min.
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)
Source leakage current with the switch off.
I
D
(Off)
Drain leakage current with the switch off.
I
D
, I
S
(On)
Channel leakage current with the switch on.
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.
C
S
(Off)
Off switch source capacitance. Measured with reference to
ground.
C
D
(Off)
Off switch drain capacitance. Measured with reference to
ground.
C
D
, C
S
(On)
On switch capacitance. Measured with reference to ground.
C
IN
Digital input capacitance.
t
ON
Delay time between the 50% and 90% points of the
SYNC
rising
edge and the switch on condition.
t
OFF
Delay time between the 50% and 90% points of the
SYNC
rising
edge and the switch off condition.
t
D
Off time measured between the 80% points of both switches
when switching from one switch to another.
Charge Injection
A measure of the glitch impulse transferred from the digital
input to the analog output during switching.
Off Isolation
A measure of unwanted signal coupling through an off switch.
Crosstalk
A measure of unwanted signal which is coupled through from
one channel to another as a result of parasitic capacitance.
Bandwidth
The frequency at which the output is attenuated by 3 dB.
On Response
The frequency response of the on switch.
Insertion Loss
The loss due to the on resistance of the switch.