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參數(shù)資料
| 型號： | HA12227F |
| 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)： | 15/86頁 |
| 文件大?。?/td> | 491K |
| 代理商： | HA12227F |
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HA12226F/HA12227F
Rev.6, Dec. 2000, page 15 of 86
REC Equalizer
The outlines of REC Equalizing frequency characteristics are shown by figure 9. Those peak level can be
set up by supplying voltage. (0 V to 5 V, GND = 0 V) to pin 10 (GPCAL).
And whole band gain can be set up by supplying voltage (0 V to 5 V, GND = 0 V) to pin 11 (RECCAL).
Both setting up range are
±
4.5 dB. In case that you do not need setting up, pin 10, pin 11 should be open
bias.
Note:
Depending on the employed REC/PB head and test tape characteristics, there is a rare case that the
REC-EQ characteristics of this LSI can not be matched to the required characteristics because of
built-in resistors which determined the REC-EQ parameters in this care, please inquire the
responsible agent because of the adjustment of built-in resistor is necessary.
RECCAL
GPCAL
Frequency (Hz)
G
Figure 9 Frequency Characteristics of REC Equalizer
Bias Switch
The HA12215F built-in DC voltage generator for bias oscillator and its bias switches.
External resistor R20, R21 which corresponded with tape positions and bias out voltage are relater with
below.
Vbias =
×
(V
CC
0.7) [V]
R22
(R20 or R21) + R22
Bias switch follows to a logic of pin 19 (B / Norm / Crom).
Note:
A current that flows at bias out pin, please use it less than 5 mA.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| HA12230NT | Audio Signal Processor for Cassette Deck |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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: |
| HA12229F | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Audio Signal Processor for Car Deck (Decode only Dolby B-type NR* with PB Amp.) |
| HA12230 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck |
| HA12230NT | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck |
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