MB86434 Datasheet, PDF (20/38 Pages) Fujitsu Component Limited. – 5V Single Power Supply Audio Interface Unit (AIU)

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