TDA7241B Datasheet, PDF (3/7 Pages) STMicroelectronics – 20W BRIDGE AMPLIFIER FOR CAR RADIO

TDA7241B
ELECTRICAL CHARACTERISTICS (Refer to the circuit of Fig. 1; V_S = 14.4V; R_th (heatsink) = 4°C/W,
Tamb = 25°C, unless otherwise specified
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
V_S
Supply Range
18
V
I_d
Total Quiescent Current
R_L = 4Ω
80
mA
V_OS
Output Offset Voltage
100 mV
P_O
Output Power
d
Distortion
.
R_L = 2Ω
26
f = 1KHz d = 10% R_L = 4Ω 18
20
W
.
R_L = 8Ω
12
R_L = 4Ω
f = 1KHz
P_O = 50mW to 12W
0.1
0.5
%
G_V
Voltage Gain
RL = 8Ω
f = 1KHz
0.05
%
P_O = 50mW to 6W
f = 1KHz
31
32
33
dB
SVR
Supply Voltage Rejection
f =100Hz R_g = 10KΩ
40
50
dB
E_n
Total Input Noise
B = Curve A R_g = 10KΩ
2
µV
B = 22Hz to 22KHz R_S = 10KΩ
3
10
mV
η
Efficiency
R_L = 4Ω f = 1KHz
P_O = 20W
65
%
I_sb
Stand-by Current
100
µA
R_i
Input Resistance
f = 1KHz
70
KΩ
V_i
Input Sensitivity
f = 1KHz
P_O = 2W R_L = 4Ω
70
mV
f_L
Low Frequency Roll Off (-3dB) P_O = 15W R_L = 4Ω
30
Hz
f_H
High Frequency Roll Off (-3dB) PO = 15W R_L = 4Ω
25
KHz
AS
Stand-by Attenuation
VO = 2Vrms
70
90
dB
V_TH(pin.2) Stand-by Threshold
1
V
T _sd
Thermal Shutdown Junction Temp.
150
°C
(*) B = Curve (**) B = 22Hz to 22KHz
Figure 2: P.C. Board and Component Layout of the Circuit of Fig. 1 (1:1 scale).
3/7