ADG787
Rev. A | Page 13 of 16
TERMINOLOGY
I
DD
Positive supply current.
V
D
(V
S
)
Analog voltage on Terminal D and Terminal S.
R
ON
Ohmic resistance between D and S.
R
FLAT (ON)
Flatness is defined as the difference between the maximum and
minimum value of on resistance as measured.
ΔR
ON
On resistance match between any two channels.
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 the 90% points of the digital
input and switch on condition.
t
OFF
Delay time between the 50% and the 90% points of the digital
input and switch off condition.
t
BBM
On or off time measured between the 80% points of both
switches when switching from one to another.
Charge Injection
A measure of the glitch impulse transferred from the digital
input to the analog output during on-off switching.
Off Isolation
A measure of unwanted signal coupling through an off switch.
Crosstalk
A measure of unwanted signal that is coupled from one channel
to another as a result of parasitic capacitance.
−3 dB 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.
THD + N
The ratio of the harmonic amplitudes plus noise of a signal, to
the fundamental.
T
SKEW
The measure of the variation in propagation delay between each
channel.
Rise Time Delay
The rise time of a signal is a measure of the time for the signal
to rise from 10% of the ON level to 90% of the ON level. Rise
time delay is the difference between the rise time, measured at
the input, and the rise time, measured at the output.
Fall Time Delay
The fall time of a signal is a measure of the time for the signal to
fall from 90% of the ON level to 10% of the ON level. Fall time
delay is the difference between the fall time, measured at the
input, and the fall time, measured at the output.
Rise-Time-to-Fall-Time Mismatch
This is the absolute value between the variation in the fall time
and the rise time, measured at the output.
