Datasheet

MAX4704
Low-Voltage, 60 Ω ,
4:1 Analog Multiplexer in QFN
_______________________________________________________________________________________ 9
Test Circuits/Timing Diagrams (continued)
0
V+
V
INH
Δ V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE-
TRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF.
Δ V
OUT
REPEAT TEST FOR EACH SECTION.
Q = Δ V
OUT
X C
L
V
OUT
V+
V
OUT
V
NO
= 0
V
INH
GND
V+
ADDB
CHANNEL
SELECT
ADDA
INH
NO_
COM
MAX4704
C
L
1000pF
Figure 5. Charge Injection
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM AND "OFF" NO TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM AND "ON" NO TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL (A, B) TO OTHER CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
V+
V
OUT
V
IN
GND
V+
V
IN
V
OUT
MEAS.
NETWORK
ANALYZER
50Ω 50Ω
50Ω
OFF-ISOLATION = 20log
ON-LOSS = 20log
CROSSTALK = 20log
50Ω
REF.
ADDB
V
OUT
V
IN
V
OUT
V
IN
ADDA
CHANNEL
SELECT
INH
NO_
COM
10nF
MAX4704
Figure 6. Off-Isolation, On-Loss, and Crosstalk
V+
GND
V+
ADDB
ADDA
CHANNEL
SELECT
1MHz
CAPACITANCE
ANALYZER
INH
NO_
NO_
COM
MAX4704
Figure 7. NO_/COM Capacitance
Chip Information
TRANSISTOR COUNT: 256
PROCESS: CMOS