Datasheet

MAX4565/MAX4566/MAX4567
Quad/Dual, Low-Voltage,
Bidirectional RF/Video Switches
14 ______________________________________________________________________________________
∆V
OUT
V+
0V
V
IN_
V
OUT
∆V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ∆V
OUT
x C
L
V
OUT
V+
IN_
NO_ OR NC_
COM_
V
NO
= 0V
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
50Ω
MAX4565
MAX4566
MAX4567
C
L
= 1000pF
V
IN_
+5V
10nF
GND_ V-
10nF
-5V
Figure 5. Charge Injection
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT IC TERMINALS.
OFF ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.
+5V
V
OUT
V+
IN_
NO_
COM_
V
IN
MAX4565
MAX4566
MAX4567
OFF ISOLATION = 20log
V
OUT
V
IN
ON LOSS = 20log
V
OUT
V
IN
CROSSTALK = 20log
V
OUT
V
IN
NETWORK
ANALYZER
50Ω
50Ω 50Ω
50Ω
MEAS REF
10nF
0V OR V+
GND_ V-
10nF
-5V
Figure 6. On Loss, Off Isolation, and Crosstalk
_________________________________Test Circuits/Timing Diagrams (continued)