ISL59440 Intersil Corporation, ISL59440 Datasheet - Page 8

• Manufacturer Part Number: ISL59440
• Description: Multiplexing Amplifier
• Manufacturer: Intersil Corporation

AC Test Circuits
NOTE:
backloaded test circuit for video cable applications.
Pin Descriptions
FIGURE 24A. TEST CIRCUIT FOR MEASURING WITH A 50Ω OR
PIN NUMBER
V
IN
50Ω
75Ω
or
1, 3, 7
10
12
13
14
15
16
R
11
2
4
5
6
8
9
Figure 24A illustrates the optimum output load when connecting to input terminated equipment. Figure 24B illustrates
G
ISL59440
R
75Ω INPUT TERMINATED EQUIPMENT
F
C
L
PIN NAME
IN
ENABLE
GND
OUT
NIC
HIZ
IN0
IN1
IN2
IN3
A
IN-
S0
S1
V+
V-
CIRCUIT 3.
V
475Ω
462.5Ω
=1, 2
or
R
S
V-
EQUIVALENT
V+
OUT
CIRCUIT 1.
8
CIRCUIT
Circuit 1
Circuit 1
Circuit 4
Circuit 1
Circuit 1
Circuit 2
Circuit 2
Circuit 4
Circuit 4
Circuit 3
Circuit 1
Circuit 2
Circuit 2
50Ω
75Ω
or
Not Internally Connected; it is recommended this pin be tied to ground to minimize crosstalk
Input for channel 0
Input for channel 1
Ground pin
Input for channel 2
Input for channel 3
Channel selection pin LSB (binary logic code)
Channel selection pin MSB (binary logic code)
Negative power supply
Positive power supply
Output
Inverting input of output amplifier
Output disable (active high); there are internal pull-down resistors, so the device will be active with
no connection; “HI” puts the output in high impedance state
Device enable (active low); there are internal pull-down resistors, so the device will be active with
no connection; "HI" puts device into power-down mode
V+
V-
EQUIPMENT
50Ω
75Ω
or
TEST
ISL59440
GND
V-
V+
FIGURE 24B. BACKLOADED TEST CIRCUIT FOR VIDEO
LOGIC PIN
V
IN
50Ω
75Ω
or
R
G
DESCRIPTION
ISL59440
CIRCUIT 4.
R
CABLE APPLICATION. BANDWIDTH AND
LINEARITY FOR R
DEGRADED.
F
21K
33K
CIRCUIT 2.
A
C
CAPACITIVELY
COUPLED
ESD CLAMP
V
L
1.2V
= 1, 2
50Ω or 75Ω
R
+
S
-
L
GND.
V+
V-
LESS THAN 500Ω WILL BE
EQUIPMENT
September 21, 2005
50Ω
75Ω
or
TEST
FN6162.1