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參數(shù)資料
| 型號： | HA12155 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System) |
| 中文描述： | 音頻信號處理器（杜比B / C型與錄音系統(tǒng)星期日的盒式收錄機） |
| 文件頁數(shù)： | 18/57頁 |
| 文件大小： | 463K |
| 代理商： | HA12155 |
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HA12155NT/HA12157NT
Rev.4, Jun. 1997, page 18 of 57
Input Block Diagram and Level Diagram
–
3 dB
IA
OUT
NR
lN
MPX
Filter
RPI PBI
PB - OUT
NR
circuit
MPX ON
MPX OFF
–
3 dB
Input
Amp
Elect-
rical
VR
MA
VRI
43 mVrms
(
–
25.2 dBs)
43 mVrms
(
–
25.2 dBs)
426 mVrms
(
–
5.2 dBs)
300 mVrms
(
–
8.2 dBs)
HA12157
775 mVrms
(0 dBs)
HA12155
580 mVrms
(
–
2.5 dBs)
47 mVrms
(
–
24.3 dBs)
VRI
RPI PBI
IA
OUT
MPX
Filter
NR
lN
PB - OUT
HA12155
580 mVrms
(
–
2.5 dBs)
HA12157
775 mVrms
(0 dBs)
NR
circuit
MA
Input
Amp
300 mVrms
(
–
8.2 dBs)
30 mVrms
(
–
28.2 dBs)
30 mVrms
(
–
28.2 dBs)
Elect-
rical
VR
33 mVrms
(
–
27.4 dBs)
NR circuit
The each level shown above is typical value when
offering Dolby level to test point pin (NR IN) with
the gain of electrical volume is under the condition
of max.
The each level shown above is typical value when
offering Dolby level to test point pin (IA OUT) with
the gain of electrical volume is under the condition
of max.
b) REC mode
a) PB mode
Figure 4 Input Block Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA12155NT | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System) |
| HA12155NT/HA12157NT | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HA12157NT | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System) |
| HA12159 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FM Receiver Circuit |
| HA12160 | 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-type NR with PB Amp) |
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