Datasheet

MAX4641/MAX4642/MAX4643
High-Speed, Low-Voltage, 4Ω, Dual SPST
CMOS Analog Switches
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Figure 5. NO_, NC_, and COM_ Capacitance
MEASUREMENTS ARE STANDARDIZED AGAINST
SHORT AT SOCKET TERMINALS. OFF-ISOLATION IS
MEASURED BETWEEN COM AND “OFF” TERMINAL
ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN
COM AND “ON” TERMINAL ON EACH SWITCH. SIGNAL
DIRECTION THROUGH SWITCH IS REVERSED; WORST
VALUES ARE RECORDED.
V+
V+
V
OUT
GND
V+
IN_
NO_
OR
NC_
COM_
V
IN
MAX4641
MAX4642
MAX4643
OFF-ISOLATION = 20log
V
OUT
V
IN
ON-LOSS = 20log
V
OUT
V
IN
NETWORK
ANALYZER
50Ω
50Ω 50Ω
50Ω
MEAS REF
0.1µF
*
* ADD 50Ω TERMINATION FOR
OFF-ISOLATION
Figure 3. Off-Isolation, On-Loss, and Crosstalk
∆V
OUT
V+
0
V
IN
V
OUT
MAX4642MAX4641
∆V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ∆V
OUT
x C
L
V+
V
OUT
GND
V+
IN_
NO_
OR
NC_
COM_
V
NO_
OR V
NC_
= 0V
50Ω
MAX4641
MAX4642
MAX4643
C
L
1000pF
V
IN
V+
GND
V+
IN_
NO_
OR
NC_
COM_
MAX4641
MAX4642
MAX4643
1MHz
CAPACITANCE
ANALYZER
AS
REQUIRED
Figure 4. Charge Injection
Chip Information
TRANSISTOR COUNT: 105