TDA7240A Datasheet, PDF (3/8 Pages) STMicroelectronics – 20WBRIDGE AMPLIFIER FOR CAR RADIO

TDA7240A
ELECTRICAL CHARACTERISTICS (refer to the circuit of fig. 1, Tamb = 25°C, Rth (heatsink) = 4°C/W,
Vs = 14.4V)
Symbol
Parameter
Test Conditions
V_s Supply Voltage
V_os Output Offset Voltage
I_d
Total Quiescent Current R_L = 4Ω
P_o Output Power
f = 1kHz; d = 10%
d Distortion
R_L = 4Ω
P_o = 50mW to 12W
R_L = 4Ω
R_L = 8Ω
f = 1kHz
GV Voltage Gain
R_L = 8Ω
P_o = 50mW to 12W
f = 1KHz
f = 1kHz
SVR
E_N
Supply Voltage Rejection f = 100Hz
Total Input Noise
R_g = 10KΩ
R_g = 10KΩ
(*)
(**)
η Efficiency
I_sb Stand-by Current
R_L = 4Ω
f = 1KHz
R_i Input Resistance
f = 1kHz
V_i Input Sensitivity
f = 1kHz; P_o = 2W; R_L = 4Ω
f_L
Low Frequency Roll Off Po = 15W; R_L = 4Ω
(–3dB)
f_H High Frequency Roll Off Po = 15W; RL = 4_Ω
(–3dB)
A_s Stand-by Attenuation
V_{TH (pin2)} Stand-by Threshold
V_o = 2Vrms
(*) B= Curve A
(**) B = 22Hz to 22 KHz
Min.
18
10
39.5
35
70
25
70
Typ.
65
20
12
0.1
0.05
40
40
2
3
65
200
28
90
Max.
18
150
120
0.5
0.5
40.5
10
30
1
Unit
V
mV
mA
W
W
%
%
dB
dB
µV
µV
%
µA
kΩ
mV
Hz
kHz
dB
V
Figure 2 : P.C. Board and Components layout of the Circuit of Fig. 1.(1:1scale)
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