TDA7245 Datasheet, PDF (3/11 Pages) STMicroelectronics – 5W AUDIO AMPLIFIER WITH MUTING AND STAND-BY

TDA7245
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, T_amb = 25°C, f = 1kHz; unless otherwise
specified).
Symbol
V_S
V_O
I_d
P_O
Parameter
Supply Voltage
Quiescent Output Voltage
Quiescent Drain Current
Output Power
Test Condition
V_S = 24V
V_S = 14V
V_S = 28V
d = 1%, f = 1KHz
VS = 14V, RL = 4Ω
V_S = 18V, R_L = 8Ω
Min. Typ. Max. Unit
12
30
V
11.6
V
17
mA
21
35
mA
4
W
4
W
d = 10%, f = 1KHz
V_S = 14V, R_L = 4Ω
V_S = 18V, R_L = 8Ω
4
5
W
5
W
d
Harmonic Distortion
Music Power (*)
V_S = 24V, d = 10%, R_L = 4Ω
V_S = 14V, R_L = 4Ω,
P_O = 50mW to 3W
f = 1KHz
f = 10KHz
12
W
0.15 0.5
%
0.8
%
V_S = 18V, R_L = 8Ω,
P_O = 50mW to 3.5W
f = 1KHz
f = 10KHz
0.12
%
0.5
%
V_S = 22V, R_L = 16Ω,
P_O = 50mW to 3W
f = 1KHz
f = 10KHz
0.08
%
0.4
%
R_I
Input Impedance
f = 1kHz
30
kΩ
BW
Small signal bandwidth (-3dB)
PO = 1W; RL = 4Ω VS = 14V
50 to 40,000
Hz
G_V
Voltage Gain (open loop)
f = 1kHz
75
dB
G_V
Voltage Gain (closed loop)
f = 1kHz
39
40
41
dB
e_N
Total Input Noise
B = 22 - 22,000Hz
R_s = 50Ω
R_s = 1kΩ
R_s = 10kΩ
1.7
mV
2
µV
3
6
µV
S/N
Signal to Noise Ratio
V_S = 18V; R_L = 8Ω
P_O = 5W; R_S = 10KΩ
86
dB
SVR
Supply Voltage Rejection
V_S = 16.5V; R_L = 8Ω; f = 100Hz 40
50
dB
R_s = 10kΩ; V_r = 0.5Vrms
T _sd
Thermal shut-down Junction
Temperature
150
°C
MUTE FUNCTION
Symbol
V_m
ATT_m
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
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