MB86434PF 查看數據表（PDF） - Fujitsu

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MB86434PF

5V Single Power Supply Audio Interface Unit (AIU)

Fujitsu 

MB86434

• Analog Output Connection Example

–

+

SGC

BBI

–

+

SGC

0.0dB

–6.0dB

–

+

SGC

EAR

6.0

dB

XEAR

JEAR

R3

C3

R5

R3

C3

R6

Receiver speaker

Dynamic type: 32 Ω (typ)

Piezoelectric-ceramic type: 70 nF, 2.8 kΩ (typ)

Earphone speaker

Dynamic type: 32 Ω (typ)

Piezoelectric-ceramic type: 70 nF, 2.8 kΩ (typ)

IMTON

–

+

SGC

TONE

SGC

0dB

–

+

GdB

XTONE

(inside IC)

R1

R2

R4

C4

R5

R4

C4

BBI

Tone speaker

Dynamic type: 32 Ω (typ)

Piezoelectric-ceramic type: 70 nF, 2.8 kΩ (typ)

G = 20 LOG (2*R2/R1) [dB]

Note: • R3, C3, R4, C4 should be given the respective values 80Ω, 0.01 µF in order to prevent unwanted oscillation.

• If a piezoelectric-ceramic type microphone is used, R5, R6 should be given the respective values 20 Ω, 10 Ω in order to

prevent unwanted oscillation.

• Tone Speaker Amp Not Used

IMTON

+

SGC

TONE

SGC

0dB

+

XTONE

(inside IC)

Note: When no tone speaker amp is used, the amp input IMTON and output TONE should be shorted together.

20

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