ISL59442 Intersil Corporation, ISL59442 Datasheet - Page 8

• Manufacturer Part Number: ISL59442
• Description: 4 x 1 Multiplexing Amplifier
• Manufacturer: Intersil Corporation

AC Test Circuits
NOTE: Figure 21A illustrates the optimum output load for testing AC performance. Figure 21B illustrates the optimum output load when connecting
to input terminated equipment. Figure 21C illustrates back loaded test circuit for video cable.
Application Circuits
FIGURE 21C.
FIGURE 21A.
BACKLOADED TEST CIRCUIT FOR VIDEO CABLE APPLICATION. BANDWIDTH AND LINEARITY FOR RL LESS THAN 500
DEGRADED
V
IN
50Ω
75Ω
or
TEST CIRCUIT WITH OPTIMAL OUTPUT LOAD
ISL59442
V
IN
V
IN
8
C
2pF
50Ω
L
V
50Ω
IN
50Ω
75Ω
FIGURE 22A.
or
FIGURE 22B.
500Ω
R
ISL59442
L
SMALL SIGNAL 200mV
+
LARGE SIGNAL 1V
-
C
2pF
L
+
-
50Ω or 75Ω
R
ISL59442
S
1.6pF
*C
1.6pF
L
P-P
C
FIGURE 21B.
= C
T
P-P
V
C
APPLICATION CIRCUIT
C
IN
T
50Ω
75Ω
T
L
APPLICATION CIRCUIT
or
+ C
25Ω
= C
R
*C
C
C
S
OUT
L
T
OUT
T
: TRACE CAPACITANCE
TEST EQUIPMENT
: TOTAL LOAD CAPACITANCE
+ C
ISL59442
C
0pF
: OUTPUT CAPACITANCE
50Ω
75Ω
OUT
OUT
or
C
TEST CIRCUIT FOR MEASURING WITH A 50
INPUT TERMINATED EQUIPMENT
22pF
OUT
C
2pF
L
R
475Ω
L
R
R
V
L
= 500Ω
S
OUT
= 500Ω
V
OUT
50Ω
75Ω
or
TEST EQUIPMENT
Ω
September 21, 2005
50Ω
75Ω
WILL BE
or
Ω
OR 75
FN7452.2
Ω