U4083B Datasheet PDF - TEMIC Semiconductors
| Part Number | U4083B | |
| Description | Low-Power Audio Amplifier for Telephone Applications | |
| Manufacturers | 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)
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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)
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for U4083B electronic component. |
| Information | Total 11 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ U4083B.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| U4083 | The function is Low-Power Audio Amplifier for Telephone Applications. TEMIC Semiconductors | |
| U4083B | The function is Low-Power Audio Amplifier for Telephone Applications. TEMIC Semiconductors | |
| U4083B-AFP | The function is Low-Power Audio Amplifier for Telephone Applications. TEMIC Semiconductors | |
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