BA7622 データシートの表示（PDF） - ROHM Semiconductor

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BA7622

75Ω driver IC with 3 internal circuits

ROHM Semiconductor 

Multimedia ICs

BA7622F

•Measurement circuit

Vector

Scope

Analyzer

Audio

Vector

Scope

Analyzer

Audio

Vector

Scope

Analyzer

Audio

~V

1 23

SWD

~V

1 23

SWE

1

75Ω

driver

2 Clamp

75Ω

driver

3

75Ω

Clamp driver

20k

4

NO Clamp

~V

1 23

SWF

VCC = 5V

+

47µF

0.022µF

8

+ 75

470µ 75

7

+ 75

470µ

75

The circuit for driving one 75Ω output load.

The circuit for driving two 75Ω output loads is as.

6

+ 75

470µ 75

+

75

1000µ

75

5

75

75

VCC = 5V

VCC = 5V

VCC = 5V

SWA

123 4

SWB

123 4

SWC

1 23

4

+++

1µ 1µ 1µ

600

200µA + + +

1µ 1µ 1µ

600

200µA

+++

1µ 1µ 1µ

600

50µA

~

~

V

~

~

V

~

~

V

OSC SG

OSC SG

OSC SG

Fig.1

4

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