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| HA457 Datasheet, PDF (6/14 Pages) Intersil Corporation – 95MHz, Low Power, AV = 2, 8 x 8 Video Crosspoint Switch | |||
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AC Test Circuits
IN0
IN1
IN2
IN3
IN4
IN5
IN6
IN7
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
VOUT
VIN = 1VP-P, SWEEP FREQUENCY
FIGURE 1. -3dB BANDWIDTH (NOTES 7-10)
HA457
IN0
OUT0
IN1
OUT1
IN2
OUT2
IN3
OUT3
IN4
OUT4
IN5
OUT5
IN6
OUT6
IN7
OUT7
VIN = 1VP-P, AT 10MHz
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
FIGURE 2. ALL HOSTILE OFF ISOLATION (NOTES 10-12)
7 X 75â¦
IN0
OUT0
IN1
OUT1
IN2
OUT2
IN3
OUT3
IN4
OUT4
IN5
OUT5
IN6
OUT6
IN7
OUT7
VIN = 1VP-P, AT 10MHz
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
VOUT
IN0
OUT0
VOUT
IN1
OUT1
75â¦
IN2
OUT2
IN3
OUT3
IN4
OUT4
IN5
OUT5
IN6
OUT6
IN7
OUT7
VIN = 1VP-P, AT 10MHz
FIGURE 3. SINGLE CHANNEL CROSSTALK (NOTES 10, 13-16)
FIGURE 4. ALL HOSTILE CROSSTALK (NOTES 10, 15, 17-19)
NOTES:
7. Program the desired input to output combination (e.g., IN7 to OUT1).
8. Enable the selected output(s).
9. Drive the selected input with VIN, and measure the -3dB frequency at the selected output (VOUT).
10. Load all outputs with the desired RL.
11. Disable all outputs.
12. Drive all inputs with VIN and measure VOUT at any output; Isolation (in dB) = -20log10 (VOUT/VIN).
13. Drive VIN on one input which connects to one output (e.g., IN7 to OUT7).
14. Terminate all other inputs to GND.
15. Enable all outputs.
16. Measure VOUT at any undriven output; Crosstalk (in dB) = 20log10 (VOUT/VIN).
17. Terminate one input to GND, and connect that input to a single output (e.g., IN0 to OUT0).
18. Drive the other seven inputs with VIN, and connect these active inputs to the remaining seven outputs.
19. Measure VOUT at the quiescent output; Crosstalk (in dB) = 20log10 (VOUT/VIN).
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