BA1451F 데이터 시트보기 (PDF) - ROHM Semiconductor

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BA1451F

AM radio / FM IF stereo system IC

ROHM Semiconductor 

Audio ICs

Pin No.

Function

· IF request

Output the IF signal to pin9 excess

of 4.0V.

Stops the IF signal at equal to or less

8

than 3.0V.

· MUTE

Apply to muting excess of 2.0V.

Off the muting at equal to or less

than 1.0V.

IF output

9

Output for the IF signal.

10 R-channel output

Internal circuit

10kΩ

8

MUTE IF OUT

10kΩ

GND 4

VCC 2

9

GND 4

VCC 2

BA1451F

Quiescent pin voltage (V)

FM

AM

0

0

4.2

4.2

1.5

1.5

11 L-channel output

GND 4

· PLL filter

Connect to a lag/lead filter.

12

· AM / FM band switch

AM band when connected to GND.

· Forced monaural

Forced monaural operation connecting

to get a resistor to mediate.

(Recommended value : 10kΩ to

13

ground.)

· Pilot filter

Connect to a capacitor.

Vreg 23

GND 4

Vreg 23

GND 4

10/11

1.5

1.5

12

AM/FM

2.1

0

13

MONO

2.1

2.1

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