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參數資料
| 型號： | HA12229F |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Audio Signal Processor for Car Deck(Decode only Dolby B-type NR with PB Amp.) |
| 中文描述： | 音頻信號處理器。為汽車甲板（只解碼杜比B型鉛放大器星期日） |
| 文件頁數： | 9/51頁 |
| 文件大?。?/td> | 304K |
| 代理商： | HA12229F |
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HA12228F/HA12229F
Rev.2, Dec. 2000, page 9 of 51
Functional Description
Power Supply Range
HA12228F/HA12229F are provided with three line output level, which will permit on optimum overload
margin for power supply conditions. And these are designed to operate on single supply only.
Table 1
Supply Voltage Range
Product
Single Supply
HA12228F
6.5 V to 12.0 V
HA12229F
Note:
The lower limit of supply voltage depends on the line output reference level.
The minimum value of the overload margin is specified as 12 dB by Dolby Laboratories.
Reference Voltage
These devices provide the reference voltage of half the supply voltage that is the signal grounds. As the
peculiarity of these devices, the capacitor for the ripple filter is very small about 1/100 compared with their
usual value. The block diagram is shown as figure 1.
+
+
+
+
15
V
CC
26
3
32
28
38
+
36
GND
Lch equalizer
Vref1
Vref2
Vref3
Vref4
Rch equalizer
MS block
Lch
Dolby NR circuit
: Internal reference voltage
Rch
Dolby NR circuit
Figure 1a The HA12228F Block Diagram of Reference Supply Voltage
相關PDF資料 |
PDF描述 |
|---|---|
| HA12230 | Audio Signal Processor for Cassette Deck |
| HA12230NT | Audio Signal Processor for Cassette Deck |
| HA12231 | Audio Signal Processor for Car Deck (PB 1 Chip) |
| HA12231FP | Audio Signal Processor for Car Deck (PB 1 Chip) |
| HA12232 | Audio Signal Pre-Amp. for Car Deck |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| HA12231 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck (PB 1 Chip) |
| HA12231FP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck (PB 1 Chip) |
| HA12232 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Pre-Amp. for Car Deck |
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