MAX321 Maxim, MAX321 Datasheet - Page 6

• Manufacturer Part Number: MAX321
• Description: The MAX320/MAX321/MAX322 are precision, dual, SPST analog switches designed to operate from ±3V to ±8V dual supplies
• Manufacturer: Maxim

Precision, Dual-Supply, SPST
Analog Switches
Figure 2. Switching Time
Figure 3. Break-Before-Make Interval (MAX322 only)
Figure 4. Charge Injection
6
______________________________________________Test Circuits/Timing Diagrams
_______________________________________________________________________________________
SWITCH
V
V
LOGIC
INPUT
INPUT
LOGIC
COM1
COM2
INPUT
MAX322
MAX320
MAX321
MAX322
V
MAX320
MAX321
MAX322
GEN
= +3V
= +3V
V
COM
C
R
L
GEN
COM1
COM2
C
V
IN
INCLUDES FIXTURE AND STRAY CAPACITANCE.
OUT
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
COM
IN
= V
COM
COM
(
R
L
R
+ R
L
+5V
-5V
V+
V-
ON
IN
)
NC2
NO1
+5V
-5V
V
V+
V-
or NC
IN
NO
+5V
-5V
V+
or NO
V-
NC
R
300
L2
R
300
L
V
SWITCH
OUTPUT
OUT2
C
C
35pF
L
L2
C
35pF
V
L
OUT
V
OUT
R
300
L1
V
OUT1
V
OUTPUT
SWITCH
OUT
C
35pF
LOGIC
IN
INPUT
IN
L1
OFF
OFF
0V
OUTPUT 1
OUTPUT 2
SWITCH
SWITCH
(V
(V
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
LOGIC
INPUT
OUT1
OUT2
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
)
)
0V
0V
Q = ( V
V
t
OUT
ON
50%
ON
ON
OUT
0.9 x V
)(C
t D
50%
0UT
L
)
0.9 x V
t
OFF
V
OUT
0UT1
OFF
OFF
t r < 20ns
t f < 20ns
0.9 x V
t D
OUT
0.9 x V
OUT2