HA12221F データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HA12221F

Audio Signal Processor for Car Deck (Decode only Dolby B type NR with PB Amp.)

Hitachi -> Renesas Electronics 

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, Dec. 2000, page 13 of 53

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