BA7357 Просмотр технического описания (PDF) - ROHM Semiconductor

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Компоненты Описание

производитель

BA7357

VIF / SIF signal processor

ROHM Semiconductor 

Video ICs

BA7357S

•Operation notes

(1) Simultaneous audio and video output muting function

It is possible to simultaneously mute the audio and video output by pulling the AFC filter terminal down.

(2) AFT defeat function

AFT defeat can be applied by pulling the AFT coil terminal down via a 1kΩ resistor.

(3) Recommended SIF input range for intercarrier mode

P / S = 20 TO 30dB (including SAWFILTER).

(4) IF input range for RFAGC switching

60 TO 95dBµ.

(5) Intercarrier mode switching

Intercarrier mode can be set by pulling the SIF terminal down via a 2kΩ resistor.

(6) IR terminal external resistor

This resistor sets the filter system reference current, so use an accurate component that has good temperature char-

acteristics.

•Electrical characteristic curves

1.5

IC is not connected.

1.25

1.0

1.5

1.4375

1.0

When mounted on

a glass eoxy board.

0.5

0.5

0 25 50 75 100 125 150

TEMPERATURE: Ta (°C)

Fig. 3 Power dissipation

0 25 50 75 100 125 150

TEMPERATURE: Ta (°C)

Fig. 4 Power dissipation

14

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