參數(shù)資料
型號(hào)： HA12161FP
廠商： Hitachi,Ltd.
英文描述： Dolby B- and C-Type Noise Reduction System(杜比B和C類(lèi)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(lèi)降噪系統(tǒng)）
文件頁(yè)數(shù)： 58/63頁(yè)
文件大?。?/td> 328K
代理商： HA12161FP
HA12141NT, HA12142NT, HA12170NT, HA12161FP, HA12162FP
58
+
—
—
+
+
8
23
Lch
Reference
Rch
Reference
V
CC
4
1 F
Figure 1 The Block-Diagram of Reference Voltage Supply
Operation Mode Control
HA12141 series provide fully electronic switching circuits. The function are controlled by DC voltage and
are NR OFF/B/C and PB/REC/MPX.
The switching truth tables are shown in table 2 and table 3.
Table 2 Switching Truth Table (NR OFF/B/C)
Function
Single supply
Split supply
Unit
Note
NR OFF
0 to V
CC
/2 – 3
V
CC
/2 – 0.5 to V
CC
/2 + 0.5
V
CC
/2 + 3 to V
CC
V
EE
to –3
–0.5 to 0.5
V
B type
V
*1
C type
Note:
3 to V
CC
V
1. These functions are available for being open at NR B mode and REC mode
Table 3 Switching Truth Table (PB/REC/MPX)
Function
Single supply
Split supply
Unit
Note
Play back (Decode mode)
0 to 0.4
V
EE
to V
EE
+ 0.4
V
EE
+ 2.5 to 0.5
V
CC
– 1 to V
CC
V
Record (Encode mode)
2.5 to V
CC
/2 + 0.5
V
CC
– 1 to V
CC
V
*1
MPX-OFF
Notes: 1. These functions are available for being open at NR B mode and REC mode.
2. MPX-OFF mode control Voltage of HA12170NT is available with range from V
CC
– 2 to V
CC
.
V
*2
MPX-off mode means that signal from input amp doesn’t go through the MPX filter, but signal goes
through the SS circuit after being attenuated 3 dB by internal resistor. Refer to figure 2.
相關(guān)PDF資料
PDF描述
HA12162FP Dolby B- and C-Type Noise Reduction System(杜比B和C類(lèi)降噪系統(tǒng))
HA12155NT Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System)
HA12157NT Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System)
HA12155 Audio Signal Processor for Cassette Deck (Dolby B/C-type NR with Recording System)
HA12160 Audio Signal Processor for Car Deck and Cassette Deck (Dolby B-type NR with PB Amp)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HA12162FP 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dolby B- and C-Type Noise Reduction System
HA12163 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)
HA12163SERIES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
HA12164 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)
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)
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