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參數(shù)資料
| 型號： | BA7726 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Analog compander with vocal fader for KARAOKE |
| 中文描述： | 模擬擴展器與卡拉OK演唱推子 |
| 文件頁數(shù)： | 10/11頁 |
| 文件大?。?/td> | 148K |
| 代理商： | BA7726 |
10
Multimedia ICs
BA7726AS / BA7726AFS
(8) Microphone input detection function
This function detects the signal input to MIC AMP IN
(pin 26) and outputs it to pin 30.
Pin 30 output
No signal input to MIC AMP IN (pin 26)
GND
Signal input to MIC AMP IN (pin 26)
V
CC
– 1.0V
The detection level is determined by the voltage
impressed on pin 29 (V
29
, set with resistive division
between Vcc and the ground) and is calculated with
the following equation, although slight error occurs
as V28 approaches ground.
0
V
CC
= 9.0V
5
10
Set within this range
– 70
– 20
at MIC AMP IN (f = 1kHz)
Pin 29 voltage: V29 (V)
Fig. 7 Microphone amplifier input detection level vs.
pin 29 voltage
These are figures for standard samples and
are not guaranteed standards.
M
d
Application example
1
2
3
4
5
6
7
8
9
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
10
11
12
13
14
15
16
OUTSW
VOCAL
FADER
SW
ALC
VR
–
+
EXPAND
COMPRESS
–
+
VR
VR
+
+
0
μ
0
μ
0.015
μ
0.068
μ
0
μ
+
0
μ
+
+
0
μ
+
1
μ
+
+
0
μ
0
μ
5
1
47k
3
18k
39k
220p
4
3900p
5
18k
1
μ
+
1
2
3
4
μ
BA7726AFS
ECHO
LEVEL
56k
10k
10k
2.7k
0
μ
+
9
8
7
6
5
4
3
2
1
1
1
1
1
1
1
1
1
1
1
μ
+
1000p
+
1
μ
0.1
μ
A
M
and
S
H
BU9252F
L
f
L
8
×
2
2
μ
2
μ
M
N
V
C
DET
V
C
T
C
8bit
A / D
8
D
L
L
M
L
L
M
LOOP GAIN
–
+
Fig.8
V
ODET
6
0.03
×
(
0.5
%
V
29
%
0.85
×
(V
CC
– 1.0), at MIC AMP IN
1
2
×
2
×
V
29
) [V
rms
],
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| BA7726AFS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Analog compander with vocal fader for KARAOKE |
| BA7726AS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Analog compander with vocal fader for KARAOKE |
| BA7726AS/AFS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Multimedia LSIs |
| BA7730S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| BA7731S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
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