MAX4598 데이터 시트보기 (PDF) - Maxim Integrated
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MAX4598 Datasheet PDF : 12 Pages
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Low-Voltage, Combination Single-Ended
8-to-1/Differential 4-to-1 Multiplexer
Test Circuits/Timing Diagrams (continued)
+5V
VEN
NLATCH
EN
LATCH
A3
V+
NO1
NO2–NO8
A0 MAX4598
A1
50Ω
A2 GND
COMA
V-
+3V
1k
-5V
VOUT
35pF
Figure 3. Enable Switching Time
VEN
V+
50%
0V
tR < 20ns
50% tF < 20ns
VOUT
90% 90%
0V
tON
tOFF
+5V
RS
NO NLATCH V+
VEN EN
VS
A0 MAX4598
COMA
CHANNEL
A1
SELECT
A2
A3
GND
V-
-5V
Figure 4. Charge Injection
VCOM
CL
1nF
V+
LOGIC
INPUT
ON
OFF
ON
VEN
0V
VCOM
∆VOUT
∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = (∆VOUT) (CL)
+5V 10nF
V+
V+
V-
EN
NO_
NLATCH
MAX4598
A_
COM_
LATCH V- GND
10nF
NETWORK
ANALYZER
VIN 50Ω
50Ω
VOUT
MEAS.
REF
50Ω 50Ω
OFF-ISOLATION =
20log
VOUT
VIN
CROSSTALK = 20log VOUT
VIN
-5V
NOTES: 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.
Figure 5. Off-Isolation/Crosstalk
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