MAX4657 Maxim, MAX4657 Datasheet - Page 8

• Manufacturer Part Number: MAX4657
• Description: Maxim's MAX4655–MAX4658 are medium-voltage CMOS analog switches with low on-resistance of 10Ω max, specifically designed to handle large switch currents
• Manufacturer: Maxim

High-Current, 10 , SPST, CMOS
Analog Switches
Figure 2. Block Diagram
Figure 3. Switching Time
8
Figure 4. Charge Injection
_______________________________________________________________________________________
OUTPUT
SWITCH
SWITCH
LOGIC
INPUT
INPUT
V O
IN
IN
V
COM
+3V
0
0
OFF
OFF
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
GND
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
NC
OR
NO
V+
IN
V-
t
50%
V
ON
Q = ( V O )(C L )
O
0.9V0
ON
ON
t
OFF
V O
t
t
R
F
OFF
OFF
0.9V0
< 20ns
< 20ns
TTL/CMOS
SHIFTER
LEVEL
V GEN
LOGIC
INPUT
NO OR
NC
SWITCH
INPUT
C
L
Test Circuits/Timing Diagrams
INCLUDES FIXTURE AND STRAY CAPACITANCE.
SENSOR
COM
COM
IN
GND
GND
V
O
= V
COM
COM
(
V
R
L
IN
R
+ R
= +3V
L
+15V
+15V
-15V
-15V
NC OR
OR NO
V+
V+
V-
V-
ON
NO
NC
)
COM
MAX4655–
MAX4658
R
MAX4655–
MAX4658
L
C L
1nF
SWITCH
OUTPUT
V O
C
35pF
L
V
O