Rainbow Electronics MAX4912 - Manual (Page 10)

MAX4910/MAX4911/MAX4912
Quad-SPDT, Clickless Audio Switches
with Negative Signal Handling
10 ______________________________________________________________________________________
tr < 5ns
tf < 5ns
50%
0V
LOGIC
INPUT
R
L
COM_
GND
CB_
C L INCLUDES FIXTURE AND STRAY CAPACITANCE.
V NO_
V
CC
t OFF
0V
NO_
OR NC_
0.8 x V 0UT 0.8 x V OUT
t ON
V OUT
SWITCH
OUTPUT
LOGIC
INPUT
CB DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
V CC
C L
V CC
V OUT
MAX4910
MAX4911
MAX4912
Test Circuits/Timing Diagrams
Figure 2. Switching Time
50%
V CC
0V
LOGIC
INPUT
V OUT
0.8 x V OUT
t
BBM
LOGIC
INPUT
R L
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
NO_
CB_
NC_
V OUT
V CC
V CC
C L
V N_ COM_
MAX4910
MAX4911
MAX4912
Figure 3. Break-Before-Make Interval
V GEN
GND
COM_
C L
V
OUT
V CC V OUT
CB_
OFF
ON
OFF
∆V
OUT
Q = ( ∆V
OUT )(C L )
NC_
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
OFF
ON
OFF
CB_
V IL TO V IH
V CC
R GEN
CB_
OR NO_
MAX4910
MAX4911
MAX4912
Figure 4. Charge Injection