- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370415 > HA12226 (Hitachi,Ltd.) Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) PDF資料下載
參數(shù)資料
| 型號： | HA12226 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
| 中文描述： | 音頻信號處理器卡座（杜比B型錄音系統(tǒng)星期日） |
| 文件頁數(shù)： | 16/86頁 |
| 文件大?。?/td> | 491K |
| 代理商： | HA12226 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁
HA12226F/HA12227F
Rev.6, Dec. 2000, page 16 of 86
BIAS (N)
Pin 33
R22
Vbias
R21
BIAS (C)
Pin 32
R20
Figure 10 External Components of Bias Block
Automatic Level Control
ALC is the input decay rate variable system. It has internal variable resistors of pin 55 (pin 44) by
RECOUT signal that is inputted to pin 9 (pin 34).
The operation is similitude to MS, detected by pin 13.
The signal input pin is pin 56 (pin 43). Resistor R1, R2 and capacitor C2, external components, for the
input circuit are commended as figure 12. There are requested to use value of the block diagram figure for
performance maintenance of S/N, T.H.D. etc.
Figure 11 shows the relation with R1 front RIN point and ROUT.
ALC operation level acts for the center of +4.5 dB at tape position TYPE I and the center of +2.5 dB at tape
position TYPE II, to standard level (300 mVrms).
Then, adopted maximum value circuit, ALC is operated by a large channel of a signal.
ALC ON/OFF can switch it by pin 15. Please do ALC ON, after it does for one time ALC OFF inevitably,
for ALC time to start usefully (when switching PB
→
PASS, when switching PB
→
PASS), in order to
reset ALC circuit.
RIN
TYPE
II
2.5dB
300mV
R
TYPE
I
4.5dB
Figure 11 ALC Operation Level
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA12227F | Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
| HA12226F | Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
| HA12228F | Audio Signal Processor for Car Deck(Decode only Dolby B-type NR with PB Amp.) |
| HA12229F | Audio Signal Processor for Car Deck(Decode only Dolby B-type NR with PB Amp.) |
| HA12230 | Audio Signal Processor for Cassette Deck |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA12226F | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
| HA12226F/HA12227F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HA12227F | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System) |
| HA12228F | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck(Decode only Dolby B-type NR with PB Amp.) |
| HA12228F/HA12229F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。