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PDF U4083B-AFPG3 Data sheet ( Hoja de datos )
| Número de pieza | U4083B-AFPG3 | |
| Descripción | Low-Power Audio Amplifier for Telephone Applications | |
| Fabricantes | TEMIC Semiconductors | |
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U4083B
Low-Power Audio Amplifier for Telephone Applications
Description
The integrated circuit, U4083B, is a low power audio
amplifier for a telephone loudspeaker. It has differential
speaker outputs to maximize the output swing at low
supply voltages. There is no need for coupler capacitors.
The U4083B has an open loop gain of 80 dB whereas the
closed loop gain is adjusted with two external resistors. A
chip disable pin permits powering down and/or muting
the input signal.
Features
D Wide operating voltage range: 2 to 16 V
D Battery powered application due to low quiescent
supply current: 2.7 mA typical
D Chip disable input to power down the integrated
circuit
D Low power down quiescent current
D Drives a wide range of speaker loads
WD Output Power, Po = 250 mW @ RL = 32 (speaker)
D Low harmonic distortion (0.5% typical)
D Wide range gain adjustable: 0 dB to 46 dB
Benefits
D Low number of external components
D Low current consumption
Block Diagram / Application Circuit
Input
75 k W
0.1mF Ri
Ci 3 kW
Rf
4
Vi
FC1 3
1mF C1
5mF
2
C2 FC2
50 kW
125 kW
50 kW
Amp.1
–
+
4 kW
4 kW
–
+ Amp.2
Bias
circuit
VS
6
5
VO1
8
VO2
1
CD
93 7781 e
Figure 1.
7 GND
Order Information
Extended Type Number
U4083B-AFP
U4083B-AFPG3
Package
SO8
SO8
Remarks
Taped and reeled
TELEFUNKEN Semiconductors
Rev. A2, 07-Apr-97
Preliminary Information
1 (11)
1 page  
U4083B
Typical Temperature Performance
Tamb = –20 to +70°C
Function
Input bias current at Vi
WTotal harmonic distortion
VS = 6.0 V, RL = 32 , Po = 125 mW,
f = 1.0 kHz
Power supply current
TVS = 3.0 V, RL = , CD = 0 V
TVS = 3.0 V, RL = , CD = 2.0 V
Typical Change
"40
+ 0.003
– 2.5
– 0.03
Units
pA/ °C
%/ °C
mmAA//
°C
°C
360
300
240
180
120
60
0
0
94 7838 e
100
80
60
40
20
0
0.1
94 7839 e
C1 = 5 mF
1 mF
VS switching from 0 to + 6 V
2468
C2 ( mF )
10
Figure 1.
Phase
99.33
92.67
86.00
Gain
1 10 100
f ( kH )
79.33
72.67
66.00
1000
Figure 2.
40
WRf = 150 k
WRi = 6 k
32
Rf
Ri
=
=
75 kW
3 kW
24
Ci
Input
Ri
16 0.1 mF
8
0
0
93 7797 e
1
Rf
VO1
Amp 1 Outputs
VO2
Amp 2
10 100
Figure 3.
w m60
C1 1 F
m50
C1 = 0.1 F
m40 C2 = 10 F
30
20 C1 = 0
10
0.1
93 7798 e
1 10
f ( kHz )
100
Figure 4.
TELEFUNKEN Semiconductors
Rev. A2, 07-Apr-97
Preliminary Information
5 (11)
5 Page 
U4083B
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances ( ODSs).
The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency ( EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423
TELEFUNKEN Semiconductors
Rev. A2, 07-Apr-97
Preliminary Information
11 (11)
11 Page | ||
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