HA12216F Datasheet, PDF (13/53 Pages) Hitachi Semiconductor – Audio Signal Processor for Car Deck(Decode only Dolby B type NR with PB Amp.)

HA12216F/HA12221F Series
The Tolerances of External Components for Dolby NR (Only HA12216F Series)
For adequate Dolby NR tracking response, take external components shown below.
Also, leak is small capacity, and please employ a good quality object.
C10
0.1µF
±10%
23
DET (L)
HA12216F Series
BIAS
4
R8
18kΩ
±2%
DET (R)
8
C4
0.1µF
±10%
Figure 6 Tolerance of External Components
Countermeasure of a Cellular Phone Noise
This IC have reinforced a cellular phone noise countermeasure, to show it hereinafter.
However, it is presumed that this effect change it greatly, by a mount set.
Please sufficiently examine an arrangement of positions, shield method, wiring pattern, in order to oftain a maximum
effect.
A high terminal of a noise sensitivity of this IC is FIN, RIN, NFI and RIP.
ref
HA12216F
1000p
680
SG
FIN
+
−
NFI
EQOUT
330k
0.01µ 12k
180
AC VM
wait DIN/AUDIO
Note: Test condition
• Use for SG by cellular radio for an evaluation use.
• SG output mode
PDC system, burst
UP Tch (Transmission mode on the side of a movement machine)
• To evaluate a capacitor of 1000 pF as connecting with it directly.
• About EQOUT output, what you measure through DIN/AUDIO filter.
Figure 7 Test Circuit
Rev.6.00 Jun 15, 2005 page 13 of 52