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參數(shù)資料
| 型號： | HA12141 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Dolby B- and C-Type Noise Reduction System |
| 中文描述： | 杜比B和C型降噪系統(tǒng) |
| 文件頁數(shù)： | 57/63頁 |
| 文件大?。?/td> | 392K |
| 代理商： | HA12141 |
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HA12141NT, HA12142NT, HA12170NT, HA12161FP, HA12162FP
Rev.3, Jun. 1999, page 57 of 63
Functional Description
Power Supply Range
HA12141 series are designed to operate on either single supply or split supply. The operating range of the
supply voltage is shown in table 1.
Table 1 Supply Voltage
Type No.
Single supply
Split supply
HA12141NT
HA1211161FP
7.5 to 16 volts
±3.8 to ±8 volts
HA12142NT
HA12162FP
9.5 to 16 volts
±4.8 to ±8 volts
HA12170NT
12 to 16 volts
±6 to ±8 volts
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.
HA12141 series are provided with 3 line output level, which will permit an optimum overload margin for
power supply conditions.
Reference Voltage
For the single supply operation these devices generate 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 conventional devices.
The reference voltage supplies are provided for the left channel and the right channel. The block-diagram
is shown as figure 1.
+
—
—
+
+
8
23
Lch
Reference
Rch
Reference
V
CC
4
1 F
Figure 1 The Block-Diagram of Reference Voltage Supply
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA12141NT | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dolby B- and C-Type Noise Reduction System |
| HA12142NT | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dolby B- and C-Type Noise Reduction System |
| HA12151MA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| HA12153MA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
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