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參數(shù)資料
| 型號(hào)： | U4037B |
| 英文描述： | LOW VOLTAGE SPEECH CIRCUIT WITH TONE RINGER INTERFACE |
| 中文描述： | 低電壓語(yǔ)音電路的音調(diào)振鈴接口 |
| 文件頁(yè)數(shù)： | 4/6頁(yè) |
| 文件大?。?/td> | 70K |
| 代理商： | U4037B |
U4037B
TELEFUNKEN Semiconductors
Rev. A1, 08-Oct-96
Preliminary Information
4 (6)
Electrical Characteristics speech circuit
Reference point Pin GND, f = 1000 Hz, 0 dBm = 775 mV
rms,
R
DC
= 60 k
, T
amb
= 25
°
C, unless otherwise specified
Parameters
Test Conditions / Pin
I
L
= 8 mA
I
L
= 20 mA
I
L
= 30 mA
I
L
= 73 mA
Symbol
V
L
Min
1.8
3.0
3.6
7.7
Typ
2.1
3.3
Max
2.6
3.6
4.5
9.7
Unit
V
V
V
V
Line voltage
Transmit and sidetone
Input resistance
Gain
Line loss compensation
Distortion at line
Maximum output voltage
R
i
I
L
= 30 mA
R
AGC
= 0 , I
L
= 73 mA
I
L
> 15 mA, V
L
= 775 mVrms
I
L
> 19 mA, d < 5 %,
V
mic
= 10 mV, RDC = 100 k
V
mic
= 20 mV, C = 470 nF
Each 3 dB overdrive
I
L
> 30 mA, G
S
= 48 dB
R
i
G
s
G
s
d
s
30
47
–5
50
48
–6
75
49
–7
2
4.2
k
dB
dB
%
dBm
V
1max
1.8
3
Anti-clipping attack time
Release time
Noise at line weighted
psophometrically
Sidetone reduction
DTMF-amplifier
Volume range d
Receiving amplifier
Gain
Amplification of DTMF signal
from DTMF IN to RECO1/2
Frequency response
0.5
9
ms
ms
n
o
– 72
dBmp
I
L
20 mA
G
STA
10
15
20
dB
5%
V
0
1
V
RMS
IL
I
F
20 mA
15 mA, mute active
G
R
G
RM
4
dB
dB
–15
–12
–9
I
L
> 15 mA, C
L
= 4.7 nF,
f =300 to 3400 Hz
I
L
= 15 to 100 mA
T
amb
= –10 to +60
°
C,
I
L
= 15 mA
I
L
15 mA, V
gen
= 11 V
rms
I
L
= 73 mA
I
L
= 73 mA
G
RF
0.5
dB
Gain change with current
Gain deviation
GR
0.5
0.5
dB
dB
GR
Ear protection differential
Line loss compensation
Receiving noise at earphone
psophometrially weighted
Gain change when muted
Output voltage push pull
Supply voltage
Output voltage
2.2
–7
–71
V
rms
dB
dBm
G
R
n
i
–5
–6
–80
I
L
I
L
20 mA
20 mA
G
RM
V
0
40
0.9
dB
V
rms
0.8
1
I
L
20 mA
speech mode
V
DDS
3
V
V
dB
Mute suppression
I
L
20 mA
G
SM
60
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