參數(shù)資料
型號: HA12161FP
廠商: Hitachi,Ltd.
英文描述: Dolby B- and C-Type Noise Reduction System(杜比B和C類降噪系統(tǒng))
中文描述: 杜比B和C型降噪系統(tǒng)(杜比乙和葷類降噪系統(tǒng))
文件頁數(shù): 59/63頁
文件大小: 328K
代理商: HA12161FP
HA12141NT, HA12142NT, HA12170NT, HA12161FP, HA12162FP
59
MPX
Internal of IC
to SS circuit
REC
MPX
OFF
V
ref
V
ref
+
+
Figure 2 The Block-Diagram of MPX Driving Circuit
It is to be desired that CR time constant circuits are provided at NR OFF/B/C terminal and PB/REC/MPX
terminal with time constant from 0.1 sec to 1 sec. If so, it will reduce the switching click noise effectively.
Application Circuits
1. HA12161FP/62FP application
HA12161FP/62FP are developed for exclusive playback of car stereo players.
But these devices are provided with AUX input. This application providing AUX input is available for
car stereo players and car stereo cassette decks.
AUX input will be useful for a tuner input. In this case PB/REC/MPX switching operates as the
switching of PB/AUX1/AUX2.
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參數(shù)描述
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HA12165 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)