MAX456 Maxim, MAX456 Datasheet - Page 11

• Manufacturer Part Number: MAX456
• Description: 8 x 8 Video Crosspoint Switch
• Manufacturer: Maxim

Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
Note 11:
Note 12:
_______________________________________________________Dynamic Test Circuits
7x
75
Connect LOAD (pin 8) to +5V (internal 400Ω loads on at all outputs).
Program any one input to connect to any one output (see Table 1 or 2 for programming codes).
Turn on buffer at the selected output (see Table 1 or 2).
Drive the selected input with V
Program each numbered input to connect to the same numbered output (IN0 to OUT0, IN1 to OUT1, etc.).
See Table 1 or 2 for programming codes.
Turn off all output buffers (see Table 1 or 2).
Drive all inputs with V
Isolation (in dB) = 20log
Turn on all output buffers (see Table 1 or 2).
Drive any one input with V
Crosstalk (in dB) = 20log
Drive all but one input with V
Single-Channel Crosstalk (Notes 1, 5, 9-11)
______________________________________________________________________________________
- 3dB Bandwidth (Notes 1-4)
V
R
IN
S
IN1
IN2
IN6
IN0
IN3
IN4
IN5
IN7
V
R
= 75
IN
S
= 2Vp-p, SWEEP FREQUENCY
IN1
IN2
IN4
IN5
IN6
IN0
IN3
IN7
= 75
= 2Vp-p @ 5MHz
MAX456
MAX456
IN
and measure V
10
10
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
LOAD
IN
OUT2
OUT6
LOAD
OUT0
OUT1
OUT3
OUT4
OUT5
OUT7
(V
(V
and measure V
IN
OUT
OUT
IN
and measure V
, and measure V
/V
/V
IN
IN
+5V
).
+5V
).
8 x 8 Video Crosspoint Switch
V
OUT
V
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
V
OUT
at any output.
OUT
OUT
at any undriven output.
OUT
at the undriven output.
at the -3dB frequency at the selected output.
75
All-Channel Crosstalk (Notes 1, 5, 9, 11, 12)
All-Channel Off Isolation (Notes 1, 5-8)
V
R
V
R
IN
S
IN
S
IN1
IN2
IN6
IN1
IN2
IN3
IN4
IN5
IN6
IN0
IN3
IN4
IN5
IN7
IN0
IN7
= 75
= 75
= 2Vp-p @ 5MHz
= 2Vp-p @ 5MHz
MAX456
MAX456
LOAD
OUT2
OUT6
LOAD
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT0
OUT1
OUT3
OUT4
OUT5
OUT7
V
V
V
V
V
V
V
V
V
+5V
+5V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
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