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TDA7267A Scheda tecnica(PDF) 3 Page - STMicroelectronics

Il numero della parte TDA7267A
Spiegazioni elettronici  3W MONO AMPLIFIER
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7267A Scheda tecnica(HTML) 3 Page - STMicroelectronics

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APPLICATION HINTS:
For 14.5V supply and 8
Ω 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
µF
VS=14.5V
C5 470
µF
OUT
8
C1 0.1
µF
C3
47
µF
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 = 8Ω; 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
Ω; BW = 20Hz to 20KHz
5
10
µV
Vsb
Stand-By Enable Voltage
1
V
TDA7267A
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