TDA7245 データシートの表示（PDF） - STMicroelectronics
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TDA7245 Datasheet PDF : 11 Pages
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TDA7245
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Tamb = 25°C, f = 1kHz; unless otherwise
specified).
Symbol
VS
VO
Id
PO
Parameter
Supply Voltage
Quiescent Output Voltage
Quiescent Drain Current
Output Power
Test Condition
VS = 24V
VS = 14V
VS = 28V
d = 1%, f = 1KHz
VS = 14V, RL = 4Ω
VS = 18V, RL = 8Ω
Min. Typ. Max. Unit
12
30
V
11.6
V
17
mA
21
35
mA
4
W
4
W
d = 10%, f = 1KHz
VS = 14V, RL = 4Ω
VS = 18V, RL = 8Ω
4
5
W
5
W
d
Harmonic Distortion
Music Power (*)
VS = 24V, d = 10%, RL = 4Ω
VS = 14V, RL = 4Ω,
PO = 50mW to 3W
f = 1KHz
f = 10KHz
12
W
0.15 0.5
%
0.8
%
VS = 18V, RL = 8Ω,
PO = 50mW to 3.5W
f = 1KHz
f = 10KHz
0.12
%
0.5
%
VS = 22V, RL = 16Ω,
PO = 50mW to 3W
f = 1KHz
f = 10KHz
0.08
%
0.4
%
RI
Input Impedance
f = 1kHz
30
kΩ
BW
Small signal bandwidth (-3dB)
PO = 1W; RL = 4Ω 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 = 50Ω
Rs = 1kΩ
Rs = 10kΩ
1.7
mV
2
µV
3
6
µV
S/N
Signal to Noise Ratio
VS = 18V; RL = 8Ω
PO = 5W; RS = 10KΩ
86
dB
SVR
Supply Voltage Rejection
VS = 16.5V; RL = 8Ω; f = 100Hz 40
50
dB
Rs = 10kΩ; Vr = 0.5Vrms
T sd
Thermal shut-down Junction
Temperature
150
°C
MUTE FUNCTION
Symbol
Vm
ATTm
Parameter
Pin 4 DC Voltage
Muting Attenuation
Test Condition
Mute SW Open (play)
f = 100Hz to 10kHz
Min. Typ. Max. Unit
6.4
V
60
65
dB
3/11
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