
ADG790
Rev. A | Page 10 of 20
TERMINOLOGY
IDD
Positive supply current.
VD (VS)
Analog voltage on Terminal D and Terminal S.
RON
Ohmic resistance between Terminal D and Terminal S.
RFLAT (ON)
Flatness is defined as the difference between the maximum and
minimum value of on resistance as measured.
ΔRON
On resistance match between any two channels.
IS (Off)
Source leakage current with the switch off.
ID, IS (On)
Channel leakage current with the switch on.
VINL
Maximum input voltage for Logic 0.
VINH
Minimum input voltage for Logic 1.
IINL (IINH)
Input current of the digital input.
CS (Off)
Off switch source capacitance. Measured with reference
to ground.
CD, CS (On)
On switch capacitance. Measured with reference to ground.
CIN
Digital input capacitance.
tON
Delay time between the 50% and the 90% points of the digital
input and switch on condition.
tOFF
Delay time between the 50% and the 10% points of the digital
input and switch off condition.
tBBM
On or off time measured between the 80% points of both
switches when switching from one to the other.
tD
Signal propagation delay through the switch measured
between the 50% points of the input signal and its corres-
ponding output signal.
tSKEW
Difference in propagation delay between the selected inputs on
the 4:1 multiplexers or any two SPDT switches from the wide
bandwidth section.
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.
3 dB Bandwidth
The frequency at which the output is attenuated by 3 dB.
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.
Differential Gain Error
The measure of how much color saturation shift occurs when
the luminance level changes. Both attenuation and
amplification can occur; therefore, the largest amplitude change
between any two levels is specified and expressed in percent.
Differential Phase Error
The measure of how much hue shift occurs when the luminance
level changes. It can be a negative or a positive value and is
expressed in degrees of subcarrier phase.