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TDA7245 数据表(PDF) 3 Page - STMicroelectronics

部件名 TDA7245
功能描述  5W AUDIO AMPLIFIER WITH MUTING AND STAND-BY
PDF  11 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7245 数据表(HTML) 3 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Tamb =25
°C, f = 1kHz; unless otherwise
specified).
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VS
Supply Voltage
12
30
V
VO
Quiescent Output Voltage
VS = 24V
11.6
V
Id
Quiescent Drain Current
VS = 14V
VS = 28V
17
21
35
mA
mA
PO
Output Power
d = 1%, f = 1KHz
VS = 14V, RL =4
Ω
VS = 18V, RL =8
Ω
d = 10%, f = 1KHz
VS = 14V, RL =4
Ω
VS = 18V, RL =8
Ω
Music Power (*)
VS = 24V, d = 10%, RL =4
Ω
4
4
4
5
5
12
W
W
W
W
W
d
Harmonic Distortion
VS = 14V, RL =4
Ω,
PO = 50mW to 3W
f = 1KHz
f = 10KHz
VS = 18V, RL =8
Ω,
PO = 50mW to 3.5W
f = 1KHz
f = 10KHz
VS = 22V, RL =16
Ω,
PO = 50mW to 3W
f = 1KHz
f = 10KHz
0.15
0.8
0.12
0.5
0.08
0.4
0.5
%
%
%
%
%
%
RI
Input Impedance
f = 1kHz
30
k
Ω
BW
Small signal bandwidth (-3dB)
PO =1W; RL =4
Ω VS = 14V
50 to 40,000
Hz
GV
Voltage Gain (open loop)
f = 1kHz
75
dB
GV
Voltage Gain (closed loop)
f = 1kHz
39
40
41
dB
eN
Total Input Noise
B = 22 - 22,000Hz
Rs =50
Ω
Rs =1k
Ω
Rs = 10k
Ω
1.7
2
36
mV
µV
µV
S/N
Signal to Noise Ratio
VS = 18V; RL =8
Ω
PO =5W; RS = 10K
Ω
86
dB
SVR
Supply Voltage Rejection
VS = 16.5V; RL =8
Ω; f = 100Hz
Rs = 10k
Ω; Vr = 0.5Vrms
40
50
dB
Tsd
Thermal shut-down Junction
Temperature
150
°C
MUTE FUNCTION
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Vm
Pin 4 DC Voltage
Mute SW Open (play)
6.4
V
ATTm
Muting Attenuation
f = 100Hz to 10kHz
60
65
dB
TDA7245
3/11



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