Datasheet

REV.
ADG786/ADG788
–6–
Table I. ADG786 Truth Table
A2 A1 A0 EN ON Switch
X X X 1 None
0 0 0 0 D1-S1A, D2-S2A, D3-S3A
0 0 1 0 D1-S1B, D2-S2A, D3-S3A
0 1 0 0 D1-S1A, D2-S2B, D3-S3A
0 1 1 0 D1-S1B, D2-S2B, D3-S3A
1 0 0 0 D1-S1A, D2-S2A, D3-S3B
1 0 1 0 D1-S1B, D2-S2A, D3-S3B
1 1 0 0 D1-S1A, D2-S2B, D3-S3B
1 1 1 0 D1-S1B, D2-S2B, D3-S3B
Table II. ADG788 Truth Table
Logic Switch A Switch B
0 OFF ON
1 ON OFF
V
DD
Most Positive Power Supply Potential
V
SS
Most Negative Power Supply in a Dual Supply Application. In single supply applications, this should be tied to
ground close to the device.
I
DD
Positive Supply Current
I
SS
Negative Supply Current
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
V
D
(V
S
) Analog Voltage on Terminals D, S
R
ON
Ohmic Resistance between D and S
ΔR
ON
On Resistance Match between Any Two Channels, i.e., 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
, 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 measured between the 50% and 90% points of the digital inputs and the switch “ON” condition.
t
OFF
Delay time measured between the 50% and 90% points of the digital input and the switch “OFF” condition.
t
ON
(EN) Delay time between the 50% and 90% points of the EN digital input and the switch “ON” condition.
t
OFF
(EN) Delay time between the 50% and 90% points of the EN digital input and the switch “OFF” condition.
t
OPEN
“OFF” time measured between the 80% points of both switches when switching from one address state to another.
Charge A measure of the glitch impulse transferred Injection from the digital input to the analog output during 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.
On Response The Frequency Response of the “ON” Switch
Insertion Loss The Loss Due to the ON Resistance of the Switch.
TERMINOLOGY
B