HA12192F/HA12197F/HA12212F Series
Input Block Diagram and Level Diagram
R6
5.1kΩ
R5
5.1kΩ
R2
330kΩ
R1
180Ω
R4
12kΩ
R3
C1 18kΩ
0.01µF
PBOUT Level
HA12192F/HA12197F : 300mVrms (−8.2dBs)
HA12193F/HA12198F : 387.5mVrms (−6.0dBs)
HA12194F/HA12199F : 450mVrms (−4.7dBs)
C2
0.1µF
EQ OUT
M-OUT
DIN
30mVrms
(−28.2dBs)
EQ Amp.
NFI
−
RIN
VREF
+
0.6mVrms
(−62.2dBs)
Input Amp.
+
−
NR circuit*1
PBOUT
FIN
Note: 1. HA12197F series is not built-in Dolby B-NR.
The each level shown above is typical value
when offering PBOUT level to PBOUT pin.
(EQ Amp. GV = 40dB, f=1kHz)
Figure 3 Input Block Diagram
Adjustment of Playback Dolby Level
After replace R5 and R6 with a half-fix volume of 10kΩ, adjust playback Dolby level.
Rev.5, Jun. 1999, page 12 of 89