參數(shù)資料
型號(hào)： HA12167FB
廠商： Hitachi,Ltd.
英文描述： Audio Signal Processor for Cassette Deck (Deck 1 Chip)
中文描述： 音頻信號(hào)處理器卡座（甲板1片）
文件頁(yè)數(shù)： 24/73頁(yè)
文件大?。?/td> 524K
代理商： HA12167FB
HA12167FB/HA12169FB
Rev.3, Jun. 1997, page 24 of 73
A deck
PB EQ
REC IN VRI 1
VRI 2 VRI 3
REC OUT
PB EQ
Compensation
of low
frequency
reagion
EQ IN
EQ OUT
HA12167/9
B deck
PB
REC
PB OUT
Figure 6 Application for Dubbing Deck
Injector Current
HA12167FB/HA12169FB has logic circuit which is fabricated by I
required enough injector current. Injector current goes into from the INJ pin (pin 38) and external resistor
is required to connect to this pin for adequate current. The value of external resistor is obtained by using
following equations. And put them with ±10% tolerance value which is calculated. V
INJ
can allow to
connect to V
CC
shown below. Large injector current fear to cause mis-operation of Logic under the
condition of high temperature. Also, small injector current fear to cause mis-operation (stop operation).
Under the condition of low temperature. Therefore, pay attention to have good stability of V
INJ
.
2
L into IC. To operate this circuit, it is
INJ
R
=
INJ
V
– 0.7
3.6
k
Single supply
INJ
R
=
INJ
V
+
EE
V
3.6
– 0.7
k
]
Split supply
Gain Control of Electronic Volume
HA12167FB/HA12169FB is designed in order to change the gain by DAC fabricated into IC. To reduce
the click noise when changing volume gain instantaneously, required to connect the capacitor and resistor
(CR time constant) to CONT pin (pin 13, 48, 68, 73). These terminals are also be used as output pin of
DAC. Therefore, by forcing voltage and current to these terminals, it is applicable to control volume gain
directly. But, voltage forced to these terminals must be from V
CC
/2 –2 V to V
CC
/2 (for split supply use, –2 V
to 0 V) in this case. And, this case, change of a gain depending on a temperature gets large.
相關(guān)PDF資料
PDF描述
HA12170NT Dolby B- and C-Type Noise Reduction System
HA12141 Dolby B- and C-Type Noise Reduction System
HA12173 Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp)
HA12174 Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HA12167FB/HA12169FB 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
HA12169FB 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Audio Signal Processor for Cassette Deck (Deck 1 Chip)
HA-1217 制造商:NEL 制造商全稱:Nel Frequency Controls,inc 功能描述:TTL Compatible Enable/Disable
HA12170NT 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dolby B- and C-Type Noise Reduction System
HA12173 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/C-type NR with PB Amp)
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