參數(shù)資料
型號： HA12237F
廠商： Renesas Technology Corp.
英文描述： Audio Signal Processor for Cassette Deck
中文描述： 音頻信號處理器卡座
文件頁數(shù)： 12/39頁
文件大?。?/td> 316K
代理商： HA12237F
HA12237F
Rev.0, Feb. 2002, page 10 of 10
PB Equalizer
The gain establishment of PB-EQ considers PB output level {(internal Line Amp. + PB Amp.) = 580
mVrms} like figure 3 at the target.
After replace RA and RB with a half-fix volume, adjust level.
REC-EQ adjust the gain in front of input to this IC.
The level digram of 1 kHz is shown figure 3.
Please set
“
RA + RB
≥
10 k
”
0.6mV
41.2dB
PB-EQ
68mV
30mV
RA
RB
580mV
25.7dB
Line Amp.
Figure 3 PB System Level Diagram (1 kHz)
Line Mute
This IC is built-in with mute circuit to Line Amp.
A mute control does with Low/High of pin 14.
Reducing pop noise is so much better 10 k
to 22 k
resistor to pin 14 in series and 1
μ
F to 22
μ
F
capacitor.
A mute is not built-in when doing a power ON/OFF.
Please correspond to it, on the side of a set system.
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