Data Sheet ADG774A
Rev. C | Page 11 of 14
TERMINOLOGY
V
DD
Most positive power supply potential.
GND
Ground (0 V) reference.
S
Source terminal. May be an input or output.
D
Drain terminal. May be an input or output.
IN
Logic control input.
EN
Logic control input.
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
D
(V
S
)
Analog voltage on the D and S terminals.
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. See Figure 22.
t
OFF
Delay between applying the digital control input and the output
switching off.
t
D
Off time or on time measured between the 80% points of both
switches when switching from one address state to another. See
Figure 23.
Crosstalk
A measure of unwanted signal that is coupled through from one
channel to another because of parasitic capacitance.
Off Isolation
A measure of unwanted signal coupling through an off switch.
Bandwidth
Frequency response of the switch in the on state measured at
3 dB down.
Distortion
R
FLAT(ON)
/R
L
