DG442 Maxim, DG442 Datasheet - Page 7

• Manufacturer Part Number: DG442
• Description: Maxim's redesigned DG441/DG442 analog switches now feature on-resistance matching (4&#8486 max) between switches and guaranteed on-resistance flatness over the signal range (9&#8486 max)
• Manufacturer: Maxim

______________________________________________Timing Diagrams/Test Circuits
Figure 2. Switching Time
Figure 3. Charge Injection
Figure 4. Off-Isolation Rejection Ratio
GENERATOR
SWITCH
OUTPUT
SIGNAL
ANALYZER
LOGIC
INPUT
NETWORK
DG441
DG442
V OUT
IN
IN
R GEN = 50Ω
+3V
0V
0V
10dBm
OFF
OFF
R L
LOGIC INPUT WAVEFORM IS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
V OUT
t ON
_______________________________________________________________________________________
Improved, Quad, SPST Analog Switches
50%
D
S
10nF
Q = ΔV OUT × C L
0.8 x V OUT
GND
ON
ON
+15V
V+
t OFF
-15V
V-
t
t
f
r
< 20ns
< 20ns
IN
0.8 x V OUT
10nF
DG441
DG442
OFF
OFF
ΔV OUT
0.8V or 2.4V
SWITCH
LOGIC
INPUT
INPUT
Figure 5. Crosstalk (repeat for channels 3 and 4)
+3V
V GEN
GENERATOR
SIGNAL
ANALYZER
NETWORK
V
D
R GEN = 50Ω
0.8V or 2.4V
R GEN
10dBm
REPEAT TEST FOR CHANNELS 2, 3, AND 4.
C L (INCLUDES FIXTURE AND STRAY CAPACITANCE)
IN
D
R L
GND
V OUT = V D
S
GND
+15V
V+
(
IN1
S
D
10nF
IN
R
+15V
V+
L
-15V
GND
+ r DS(ON)
V-
R
S
L
V IN = +3V
+15V
-15V
V+
V-
DG441
DG442
R L
)
D
-15V
V-
DG441
DG442
IN2
D
S
DG441
DG442
10nF
C L
1nF
35pF
0.8V or 2.4V
V OUT
50Ω
V OUT
7