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參數(shù)資料
| 型號： | U4050B-AFLG3 |
| 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)： | 6/18頁 |
| 文件大?。?/td> | 253K |
| 代理商： | U4050B-AFLG3 |
U4050B
Rev. A2, 05-Mar-98
6 (18)
Unit
Max.
Typ.
Min.
Symbol
Test Conditions / Pins
see figure 7
No ac signal
Parameters
Speaker amplifier
Minimum line
current for operation
Gain from V
L
to SAO
I
Lmin
10.5
15
mA
I
L
V
gen
= 10 mV
Load resistance
R
L
= 50
d < 5 %
V
gen
= 300 mV
rms
I
L
> 15 mA
I
L
= 20 mA
I
L
> 15 mA
(Input G
SA
open)
I
L
= 15 mA
T
amb
= –10 to + 60
°
C
I
L
= 15 to 100 mA
R
AGA
= 7.5 k
I
L
= 15 to 100 mA
15 mA
G
SA
27.5
29
30.5
dB
Output power
PSA
PSA
nsa
5
20
mW
Output noise
200
μ
V
Gain devitation
G
SA
1
dB
Gain change with current
G
SA
1.5
dB
Resistor for turning off
speaker amplifier
Maximum off-state
Output voltage
R
GSA
0.8
1.3
2
M
I
L
= 15 mA
V
L
= 0 dBm
Pin G
SA
open
I
L
= 15 mA
f = 300 to 3400 Hz
20 dB overdrive
V
SAO
–50
dBm
Gain change
with frequency
Attack time
Release time
Distortion
G
SA
1
dB
t
r
t
f
1
ms
ms
%
300
I
L
= 15 mA
V
gen
= 300 mV
d
SAO
5
DTMF - amplifier
Test conditions: I
D
= 2 mA, I
M
= 0.3 mA, R
AGA
= 7.5 k
, mute active
Adjustment range of DTMF
gain
Load = 600
DTMF amplification
I
L
= 15 mA
Gain deviation
I
L
= 15 mA
T
amb
= –10 to 60
°
C
Input resistance
Distortion of
DTMF signal
V
I
= 0 dBm
Gain deviation
with current
R
AGA
= 7.5 k
see figure 8
I
L
= 15 mA
G
D
18
26
34
dB
G
D
G
D
24.5
26
27
0.5
dB
dB
R
i
d
20
25
30
2
k
%
I
L
15 mA
I
L
= 15 to 100 mA
G
D
0.5
dB
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