HA12218F データシートの表示（PDF） - Renesas Electronics

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HA12218F

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

Renesas Electronics 

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. GV = 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

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