ADG821/ADG822/ADG823
Rev. A | Page 11 of 12
TERMINOLOGY
V
DD
Most positive power supply potential.
GND
Ground (0 V) reference.
I
DD
Positive supply current.
S
Source terminal. May be an input or output.
D
Drain terminal. May be an input or output.
IN
Logic control input.
R
ON
Ohmic resistance between Terminal D and Terminal S.
ΔR
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
D
, V
S
Analog voltage on Terminal D and Terminal S.
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.
C
D
(Off)
Off switch drain capacitance.
C
D
, C
S
(On)
On switch capacitance.
t
ON
Delay between applying the digital control input and the output
switching on.
t
OFF
Delay between applying the digital control input and the output
switching off.
t
BBM
Off time or on time measured between the 90% points of both
switches, when switching from one address state to another.
Charge Injection
Charge injection is a measure of the glitch impulse transferred
from the digital input to the analog output during switching.
Crosstalk
Crosstalk is a measure of unwanted signal that 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 switch.
Bandwidth
The frequency at which the output is attenuated by −3 dBs.
On Response
The frequency response of the on switch.
Insertion Loss
The loss due to the on resistance of the switch.
