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參數(shù)資料
| 型號： | HA12175 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp) |
| 中文描述： | 音頻信號處理器（杜比B / C型與鉛放大器為汽車甲板上午和卡座） |
| 文件頁數(shù)： | 11/66頁 |
| 文件大?。?/td> | 1116K |
| 代理商： | HA12175 |
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HA12173 Series
Rev.1, Nov. 1992, page 11 of 66
Functional Description
Power Supply Range
HA12173 series are provided with four line output level, which will permit on optimum overload margin
for power supply conditions. And this series are designed to operate on either single supply or split supply.
Table 1
Supply Voltage
Item
HA12173
HA12174
HA12175
HA12177
Single supply
7.0 V to 16.0 V
8.0 V to 16.0 V
9.5 V to 16.0 V
12.0 V to 16.0 V
Split supply
GND level
±5.0 V to 8.0 V
±5.0 V to 8.0 V
±5.0 V to 8.0 V
±6.0 V to 8.0 V
V
EE
level
±3.5 V to ±8.0 V
±4.0 V to 8.0 V
±4.8 V to 8.0 V
±6.0 V to 8.0 V
A. 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.
B. In case of using digital GND terminal referring to GND level, operating voltage range varies
depending on the condition at power on. On using the HA12173/174/175, use within the following
ranges to avoid latch-ups.
When power on in NR-OFF mode: ±5.0 V to ±8.0 V
When power on in NR-ON mode: ±5.7 V to ±8.0 V
C. In the reverse-voltage conditions such as ‘D-GND is higher than V
CC
’ or ‘D-GND is lower than
GND’, excessive current flows into the D-GND to destory this IC. To prevent such destruction, pay
attention to the followings on using.
Single power supply : Short-circuit the D-GND and GND directory on the board mounting this IC.
Split power supply
: Avoid reverse conditions of D-GND and V
CC
or V
EE
voltage, including
transient-time of power ON/OFF.
Reference Voltage
For the single supply operation 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 Reference voltage are provided for the left channel and the
right channel separately. The block diagram is shown as figure 1.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA12177 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp) |
| HA12179F | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processer for Car Deck and Cassette Deck(Dolby B-type NR with PB Amp) |
| HA12181FP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:AM Radio Noise Reduction System |
| HA12187 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Bus Interface Driver/Receiver IC |
| HA12187DP-EL-E | 制造商:Renesas Electronics Corporation 功能描述:MCU - Trays |
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