HA12231FP
Input Pin 10 to 22 kΩ
+ 1 to 22 µF
MPU
Figure 2 Interface for Reduction of Pop Noise
Input Block Diagram and Level Diagram
R1 R2
5.1kΩ 5.1kΩ
60mVrms
(−22.2dBs)
EQOUT
EQ Amp.
+−
FIN PBIN
0.6mVrms
RIN (−62.2dBs)
PBOUT Level
HA12231FP: 450 mVrms (−4.7 dBs)
C1
0.1µF
TAI
30mVrms
(−28.2dBs)
the other
channel
+ Input Amp. 0dB
−
MUTE
23.5dB
PBOUT
VREF
The each level shown above is typical value
when offering PBOUT level to PBOUT pin.
(EQ Amp. Gv = 40 dB, f = 1 kHz)
Figure 3 Input Block Diagram
Adjustment of Playback Reference Operate Level
After replace R1 and R2 with a half-fix volume of 10 kΩ, adjust playback reference operate level.
Rev.2.00 Jun 15, 2005 page 8 of 22