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參數(shù)資料
| 型號： | BH3874AKS2 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | SPDT SUBMINIATURE POWER RELAY |
| 中文描述： | 聲音處理器IC |
| 文件頁數(shù)： | 23/25頁 |
| 文件大?。?/td> | 261K |
| 代理商： | BH3874AKS2 |
BH3874AKS2
Audio ICs
!
Operation notes
(1) About operation voltage supply range
Within operation voltage supply range, basic circuit function operation is guaranteed within operation ambient temp.
But please confirm set up constant and element, voltage set up and temp set up on use.
(2) About operation temp range.
If it within recommended operation voltage range, circuit function operation is guaranteed within operation temp.
It corralled to conditions of power dissipation to temp.
Please watch out except condition stipulated by electrical characteristics within the range. It cannot guarantee
standard value of electrical characteristics. But it retains original function.
(3) About Application circuit
Example of application circuit drawing is convinced as recommendable. But please confirm characteristic including
above mentioned noticed.
At use with modification of external constant, please decide with enough margin considering distribution, ETC of this
IC, external parts including quiescence characteristics and excessive characteristics.
Please note that we have not yet confirmed any concerned patent rights completely.
(4) About 2-wire serial control
High-frequency digital signal is inputted into the SCK terminal and SI terminal. So wire and print patterns suitably to
prevent interference to analog signal system line (especially to input line).
(5) About ground line
Please connect IC’s ground to the ground of a set with one point. When the IC has common impedance to the ground
line, pop noise may occur in function switching.
(6) About Schmidt circuit
This IC has the Schmidt circuit as preventive measures against logic signal input into the DATA (34pin) and CLK
(35pin) terminals. Therefore, this IC is not affected so much by noise to a logic signal line.
(7) About power on/off
At on of power supply or off of power supply pop noise occurs. Therefore, please supply mute.
(8) Setting of spectrum analyzer minimum light level
Output offset voltage may shift due to the surrounding conditions (temperature, stresses, etc.).
Therefore when setting the spectrum analyzer minimum light level, leave a margin (more than 30% to spectrum
analyzer output offset voltage VOS).
!
Electrical characteristic curves
FREQUENCY : f (Hz)
Note : This graph is shown at the input common-mode.
Gain at the input inverting-mode is 6dB.
G
P
Fig.5 Vocal fade characteristics
10
Phase
100
1k
10k
100k
45
40
35
30
20
25
15
+
15
5
+
5
+
0
10
+
10
200
175
150
125
75
100
50
+
200
+
175
+
100
+
75
+
150
+
125
25
+
0
+
50
+
25
Gain
FREQUENCY : f (Hz)
G
P
Fig.6 Surround characteristics
10
100
1k
10k
100k
25
20
15
10
+
0
5
+
5
+
15
+
25
+
10
+
20
200
175
150
125
75
100
50
+
200
+
175
+
150
+
0
25
+
75
+
50
+
25
+
100
+
125
Gain
phase
FREQUENCY : f (Hz)
B
Fig.7 Graphic equalizer
characteristics
10
100
1k
10k
100k
4
2
+
0
+
2
+
6
+
4
+
8
+
20
+
18
+
22
+
24
+
12
+
10
+
16
+
14
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