M52758SP 데이터 시트보기 (PDF) - Vishay Semiconductors
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M52758SP Datasheet PDF : 15 Pages
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M52758SP/FP
Note How to Use This IC (Pin No is FP)
1. R, G, B input signal is 0.7 VP-P of standard video signal.
2. H, V input is 2.0 V (min.) TTL type.
3. Input signal with sufficient low impedance to input terminal.
4. The terminal of H, V output pin are shown as Figure 1. It is possible to reduce rise time by insert the resister
between VCC line and H, V output pin, but set the value of resister in order that the current is under 7.5 mA.
Setting the value of R is more than 2 kΩ as shown in Figure 1.
5V
5V
1 kΩ
R
I < 7.5 mA
Figure 1
5. The terminal of R, G, B output pin (pin 27, 30, 35). It is possible to add a pull-up resister according as drive ability.
But set the value of resister in order that the current is under 10 mA. Setting the value of R is more than 500 Ω as
shown in Figure 2.
5V
I < 10 mA
50 Ω
430 Ω
R
Figure 2
6. Switch (pin 19) can be changed when this terminal is GND or OPEN
When GND: Signal output from input 1
When OPEN: Signal output from input 2
When the switch is being used as Figure 3
0 to 0.5 V: Signal output from input 1
2 to 5 V: Signal output from input 2
It is not allowable to set voltage higher than VCC.
19
Figure 3
Notice of Making Printed Circuit Board
• Please notice following as shown below. It will maybe cause something oscillation because of the P.C.B. layout of
the wide band analog switch.
• The distance between resister and output pin is as short as possible when insert a output pull-down resister.
• The capacitance of output terminal as small as possible.
• Set the capacitance between VCC and GND near the pins if possible.
• Using stable power-source (if possible the separated power-source will be better).
• It will reduce the oscillation when add a resister that is tens of ohms between output pin and next stage.
• Assign an area as large as possible for grounding.
Rev.2.00 Sep 14, 2006 page 13 of 14
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