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參數(shù)資料
| 型號： | U4050B |
| 英文描述： | Speech Circuit with Line-Powered Loudspeaker Amplifier |
| 中文描述： | 語音電路線供電揚聲器放大器 |
| 文件頁數(shù)： | 7/18頁 |
| 文件大小： | 253K |
| 代理商： | U4050B |
U4050B
Rev. A2, 05-Mar-98
7 (18)
Unit
Max.
Typ.
Min.
Symbol
Test Conditions / Pins
see figure 4
Parameters
Supply voltage
Test conditions: V
MIC
= 10 mV; T
amb
= –10 to 60
°
C
Output voltage
I
L
= 15 mA
I
D
= 2 mA
RC = 68 k
I
L
= 15 mA
I
D
= 2 mA
RC = 130 k
I
L
= 100 mA
I
D
= 0 mA
T
amb
= –10 to + 60
°
C
I
M
= 0.3 mA
I
L
15 mA
RC = 130 k
V
D
V
D
V
D
2.9
3.1
6.1
V
V
V
Supply voltage for an
electret microphone
V
M
1.45
3.3
V
Squelch
Attenuation of
transmit gain
Attenuation of
speaker amplifier
Switching level
of squelch
Squelch disable
MUTE input
MUTE input current
see figure 9
I
L
15 mA
G
S
8
10
12
dB
I
L
R
GSA
= 18 to 560 k
I
L
15 mA
RSQ = 100 k
I
L
15 mA
15 mA
G
SA
7.5
10
12.5
dB
V
mico
6.5
10
mV
RSQ
0.5
1
2
M
see figure 10
MUTE active
I
L
> 15 mA
V
MUTE
= V
D
Mute inactive
I
L
> 15 mA
Mute active
I
L
> 15 mA
I
MUTE
20
30
μ
A
MUTE input voltage
V
MUTE
0,3
V
V
MUTE
1.5
0,3
V
PD input
PD input current
see figure 10
PD active
I
L
> 15 mA
V
PD
= V
D
PD = active
PD = inactive
V
D
= V
PD
= 4.5 V
PD = active
I
L
= 15 mA
I
L
= 15 mA
PD = active
I
L
=100 mA
PD = active
I
PD
20
50
μ
A
Input voltage
V
PD
V
PD
I
DPD
2
V
V
μ
A
0.3
–100
Current consumption
–40
Voltage drop at V
L
V
L
1.5
V
V
L
1.7
V
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| U4055B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Low-Voltage Electronic Speech Circuit with Dialer Interface |
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