HA12216F Datasheet, PDF (10/53 Pages) Hitachi Semiconductor – Audio Signal Processor for Car Deck(Decode only Dolby B type NR with PB Amp.)

HA12216F/HA12221F Series
Input Block Diagram and Level Diagram
R6
5.1kΩ
R5
5.1kΩ
R2
330kΩ
R4
12kΩ
C1 R3
0.01µF 18kΩ
R1
180Ω
PBOUT
HA12216F/HA12221F: 300mVrms (−8.2dB)
HA12217F/HA12222F: 387.5mVrms (−6.0dB)
HA12218F/HA12223F: 450mVrms (−4.7dB)
C2
0.1µF
EQOUT
M-OUT
TAI
RAI
30mVrms 42.4mVrms
(−28.2dBs) (−25.2dBs)
EQ Amp.
NFI ^{− +}
RIN
VREF
0.6mVrms
(−62.2dBs)
Input Amp.
+
Dolby NR
−
circuit *
PBOUT
FIN
The each level shown above is typical value
when offering PBOUT level to PBOUT pin.
(EQ Amp. G_V = 40dB, f = 1kHz)
Note: HA12221F series does not include Dolby NR circuit.
Figure 3 Input Block Diagram
Adjustment of Playback Reference Operate Level
After replace R5 and R6 with a half-fix volume of 10 kΩ, adjust playback reference operate level.
Rev.6.00 Jun 15, 2005 page 10 of 52