Datasheet

ADG888
Rev. A | Page 11 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 Terminal D and Terminal 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
, 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
, 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 through from one
channel to another as a result of parasitic capacitance. This is
specified for two conditions:
• Adjacent channel, that is, S1A to S2A, S1B to S2B, S3A to
S4A, or S3B to S4B.
• Adjacent switch, that is, S1A to S1B, S2A to S2B, S3A to
S3B, or S4A to S4B.
−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 signal noise to the
fundamental.