參數(shù)資料
型號: HA12222F
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(解碼杜比乙只用PB安培型降噪)
文件頁數(shù): 8/53頁
文件大小: 343K
代理商: HA12222F
HA12216F/HA12221F Series
Rev.6, Dec. 2000, page 8 of 53
Functional Description
Power Supply Range
HA12216F/HA12221F series 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
HA12216F/HA12221F
6.5 V to 12.0 V
HA12217F/HA12222F
6.8 V to 12.0 V
HA12218F/HA12223F
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.
7.2 V to 12.0 V
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.
+
+
+
+
38
16
Note: HA12221F series does not include Dolby NR circuit.
V
CC
RIP
C15
1
μ
33
+
35 36
EQ block (to Line Amp.
in case of HA12221F series)
V
REF
MS block
L channel
Dolby NR circuit
: Internal reference voltage
R channel
Dolby NR circuit
Figure 1 The Block Diagram of Reference Supply Voltage
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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