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參數(shù)資料
| 型號(hào)： | U4050B |
| 英文描述： | Speech Circuit with Line-Powered Loudspeaker Amplifier |
| 中文描述： | 語音電路線供電揚(yáng)聲器放大器 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大小： | 253K |
| 代理商： | U4050B |
U4050B
Rev. A2, 05-Mar-98
4 (18)
Absolute Maximum Ratings
Parameters
Symbol
I
L
V
L
T
j
T
amb
T
stg
P
tot
Value
140
15
150
–25 to +75
–55 to +150
750
Unit
mA
V
°
C
°
C
°
C
mW
Line current
Line voltage
Junction temperature
Ambient temperature
Storage temperature
Total power dissipation (T
amb
= 60
°
C, SO28)
Thermal Resistance
Parameters
Symbol
R
thJA
Value
120
Unit
K/W
Junction ambient SO28
Electrical Characteristics
Test conditions unless otherwise specified: f = 1 kHz, 0 dBm = 775 V
rms
, I
M
= 0.3 mA, I
D
= 2 mA, RC = 130 k
,
T
amb
= 25
°
C, R
GSA
= 560 k
, Z
H
= Z
M
= 68 nF, Pin AGA open
Parameters
Test Conditions / Pins
see figure 4
I
L
= 2 mA
I
L
= 15 mA
I
L
= 19 mA
I
L
= 30 mA
I
L
= 100 mA
see figures 5 and 11
Symbol
Min.
Typ.
Max.
Unit
DC characteristics
V
L
V
L
V
L
V
L
V
L
1.9
5.2
5.4
6.0
9.5
V
V
V
V
V
DC oltage drop
DC voltage drop
over circuit
4.8
5.6
Transmission amplifier
Adjustment
range of transmit gain
Transmitting
amplification
Frequency response
I
L
= 15 mA
I
L
= 15 mA
G
S
40
48
56
dB
G
S
G
S
47.75
48.25
48.75
0.5
dB
dB
I
L
f = 300 to 3400 Hz
Pin AGA open
I
L
= 15 to 100 mA
T
amb
= –10 to +60
°
C
I
L
= 15 mA
15 A, C
L
= 4.7 nF
Gain change with current
G
S
0.5
dB
Gain deviation
G
S
0.5
dB
dB
CMRR of microphone
amplifier
Input resistance of MIC
amplifier
Distortion at line
CMRR
60
80
R
i
45
60
80
k
I
L
> 15 mA
V
L
= 775 mV2rms
I
L
> 19 mA d < 5%
V
mic
= 10 m
I
L
> 15 mA
G
S
= 48 dB
V
mic
= 20 mV
C = 470 nF
Each 3 dB overdrive
d
s
2
%
Maximum output voltage
V
1max
n
o
1.8
3
4.2
–72
dBm
dBmp
Noise at line
psophometrically weighted
Anticlipping
attack time
Release time
–80
0.5
9
ms
ms
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