IH5352CBP 데이터 시트보기 (PDF) - Intersil

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IH5352CBP

Quad SPST, CMOS RF/Video Switch

Intersil 

IH5352

15V

5V

VOUT

DC BIAS

VOLTAGE

= -5V

75Ω

ANALOG

INPUT 1µF

S1 V+

D1

IN1

VL S2

D2

IN2

V-

GND

22pF-35pF

-15V

CHOLD

1000pF

+3V

0V

TTL CONTROL IN

≈ +4V

0V

1

14 +5V

2

13

3

12

4 SN7400 11

5

10

6

9

7

8

FIGURE 7. ALTERNATIVE COMPENSATION CIRCUIT

Overvoltage Protection

If sustained operation with no supplies but with analog

signals applied is possible, it is recommended that diodes

(such as 1N914) be inserted in series with the supply lines to

the IH5352. Such conditions can occur if these signals come

from a separate power supply or another location, for

example. The diodes will be reverse biased under this type

of operation, preventing heavy currents from flowing from the

analog source through the IH5352.

The same method of protection will provide over ±25V

overvoltage protection on the analog inputs when the

supplies are present. The schematic for this connection is

shown in Figure 8.

15V

1N914

1µF

S1 V+

5V

VL S2

D1

D2

IN1

IN2

V-

GND

1N914

1µF

-15V

FIGURE 8. OVERVOLTAGE PROTECTION

6

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