參數(shù)資料
型號: HA12141
廠商: Hitachi,Ltd.
英文描述: Dolby B- and C-Type Noise Reduction System
中文描述: 杜比B和C型降噪系統(tǒng)
文件頁數(shù): 60/63頁
文件大小: 392K
代理商: HA12141
HA12141NT, HA12142NT, HA12170NT, HA12161FP, HA12162FP
Rev.3, Jun. 1999, page 60 of 63
HA12134A/5A/6A (Dolby B NR)
R
22 k
C
19
2200 p
R
17
560
C
17
2200 p
C
10
0.1
μ
C
16
0.1
μ
C
18
C
9
2.2
μ
R
10 k
PB OUT
(L)
2200 p
AUX 2
AUX 1
to V
R
8
22 k
R
9
18 k
15
16
17
18
19
20
21
22
23
24
25
26
27
28
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
14
13
12
11
10
9
8
7
6
5
4
3
2
1
HA12161FP
(Dolby B-C NR)
C
14
2200 p
C
5
0.1
μ
C
15
0.1
μ
R
19
560
C
21
2200 p
R
18
22 k
C
20
2200 p
C
6
2.2
μ
R
4
10 k
PB OUT
(R)
C
11
0.47
μ
+
R
10
10 k
PB IN
(L)
C
0.47
μ
R
5.1 k
C/B/OFF
OFF
R
2
10 k
C
100
μ
C
1
0.47
μ
R
1
5.1 k
PB IN
(R)
C
2
0.47
μ
C
R
3
22 k
C
13
22
μ
C
4
1
μ
+
+
+
+
+
+
+
+
AUX IN
(L)
AUX IN
(R)
B
PB
V
Note: C , C = 0.22
μ
F with HA12134A Series
Figure 3 Application of HA12161FP/162FP
We show such application in figure 3. In this application there is 3dB difference between mode AUX1
and mode AUX2 of controlled terminal’s pin 24.
Another application is show in figure 4. It is put in filter circuit between pin 6 or 23 and pin 7 or 22.
For example AUX1 mode is AM tuner input and AUX2 mode is FM tuner input respectivily.
AUX2
AUX1
3 dB Attenuator
Internal of IC
Filter
6
7
+
+
Figure 4 Application of AUX Mode
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