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参数资料
| 型号： | TDA7267A |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 3 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP16 |
| 封装： | POWER, DIP-16 |
| 文件页数： | 3/7页 |
| 文件大小： | 103K |
| 代理商： | TDA7267A |
APPLICATION HINTS:
For 14.5V supply and 8
speaker application, its
maximum power dissipation is about 1.8W.
Assumming that max ambient temperature is
70
°C, the required thermal resistance of the de-
vice mounted on the PCB with a dissipating area
must be equal to: (150 - 70)/1.8 = 44.4
°C/W.
Junction to pin thermal resistance of the package
is about 15
°C/W. That means external heat sink
of about 30
°C/W is required.
Cu ground plane of PCB can be used as heat dis-
sipating means.
IN
SVR
P-GND
VS
C4
100
F
VS=14.5V
C5 470
F
OUT
8
C1 0.1
F
C3
47
F
IN
D98AU828
STAND-BY
4
3
9 to 16
2
1
S-GND
6
Figure 1. Application Circuit
THERMAL DATA
Symbol
Parameter
Value
Unit
Rth j-amb
Thermal Resistance Junction to ambient
70
°C/W
Rth j-case
Thermal Resistance Junction to case
15
°C/W
ELECTRICAL CHARACTERISTICS (Tamb = 25
°C; VS = 14.5V; RL = 8; f = 1KHz; unless otherwise
specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VS
Supply Voltage Range
5
18
V
IS
Quiescent Current
23
35
mA
Isb
Stand-By Current
Pin 3 shorted to GND
0.3
mA
VO
Quiescent Output Voltage
7.5
V
AV
Voltage Gain
31
33
dB
RIN
Input Impedance
50
100
K
PO
Output Power
THD = 10%
2.7
3
W
THD
Distortion
PO = 1W
0.1
0.3
%
SVR
Supply Voltage Rejection
Vripple = 150mVrms;
Fripple = 1KHz
50
dB
EI
Input Noise Voltage
Rg = 10K
; BW = 20Hz to 20KHz
5
10
V
Vsb
Stand-By Enable Voltage
1
V
TDA7267A
3/7
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