adg1421 Analog Devices, Inc., adg1421 Datasheet - Page 14

• Manufacturer Part Number: adg1421
• Description: 2.1 ? On Resistance, ?15 V/+12 V/?5 V Icmos Dual Spst Switches
• Manufacturer: Analog Devices, Inc.

ADG1421/ADG1422/ADG1423
TERMINOLOGY
I
The positive supply current.
I
The negative supply current.
V
The analog voltage on Terminal D and Terminal S.
R
The ohmic resistance between Terminal D and Terminal S.
R
Flatness is defined as the difference between the maximum and
minimum value of on resistance as measured over the specified
analog signal range.
I
The source leakage current with the switch off.
I
The drain leakage current with the switch off.
I
The channel leakage current with the switch on.
V
The maximum input voltage for Logic 0.
V
The minimum input voltage for Logic 1.
I
The input current of the digital input.
C
The off switch source capacitance, measured with reference to
ground.
C
The off switch drain capacitance, measured with reference to
ground.
C
The on switch capacitance, measured with reference to ground.
C
The digital input capacitance.
DD
SS
S
D
D
INL
ON
FLAT (ON)
S
D
D
IN
D
INL
INH
, I
(Off)
(Off)
, C
(Off)
(V
(Off)
(I
S
(On)
S
INH
S
)
(On)
)
Rev. 0 | Page 14 of 16
t
Delay time between the 50% and 90% points of the digital input
and switch on condition. See Figure 26.
t
Delay time between the 50% and 90% points of the digital input
and switch off condition. See Figure 26.
t
Delay time between the 50% and 90% points of the digital
inputs and the switch on condition when switching from one
address state to another.
T
Off time measured between the 80% point of both switches
when switching from one address state to another. See Figure 27.
Charge Injection
A measure of the glitch impulse transferred from the digital
input to the analog output during switching. See Figure 28.
Off Isolation
A measure of unwanted signal coupling through an off switch.
See Figure 29.
Crosstalk
A measure of unwanted signal that is coupled through from one
channel to another as a result of parasitic capacitance. See
Figure 30.
Bandwidth
The frequency at which the output is attenuated by 3 dB. See
Figure 31.
On Response
The frequency response of the on switch.
Insertion Loss
The loss due to the on resistance of the switch. See Figure 31.
THD + N
The ratio of the harmonic amplitude plus noise of the signal to
the fundamental. See Figure 32.
AC Power Supply Rejection Ratio (ACPSRR)
ACPSRR measures the ability of a part to avoid coupling noise
and spurious signals that appear on the supply voltage pin to the
output of the switch. The dc voltage on the device is modulated
by a sine wave of 0.62 V p-p. The ratio of the amplitude of signal on
the output to the amplitude of the modulation is the ACPSRR.
See Figure 22.
ON
OFF
TRANSITION
BBM
(EN)
(EN)