TDA7376B Datasheet, PDF (5/9 Pages) STMicroelectronics – 2 x 35W POWER AMPLIFIER FOR CAR RADIO

TDA7376B
ELECTRICAL CHARACTERISTICS (Refer to the test fig. 1 and 2 circuit, T_amb = 25°C; V_S = 14.4V;
f = 1KHz; RL = 4Ω; unless otherwise specified.)
Symbol
V_S
I_d
V_OS
PO
P_{O max}
P_{O EIAJ}
THD
C_T
R_IN
G_V
∆GV
E_N
SVR
Parameter
Supply Voltage
Total Quiescent Drain Current
Output Offset Voltage
Output Power
Max. Output Power (*)
EIAJ Output Power (*)
Distortion
Cross Talk
Input Resistance
Voltage Gain
Channel Gain Balance
Input Noise Voltage
Supply Voltage Rejection
BW
CMRR
A_SB
V_{sb IN}
Vsb OUT
I_sb
A_M
V_{M IN}
V_{M OUT}
I6
D_DL
D_DOUT
Power Bandwidth
Common Mode Rejection Ratio
Stand-by Attenuation
Stand-by in Threshold
Stand-by out Threshold
Stand-by Current Consumption
Mute Attenuation
Mute in Threshold
Mute out Threshold
Mute pin Current
Distortion Detection Level (**)
Distortion Detector Output DC
Current
(*) Saturated square wave output
(**) see figure 5 for THD setting.
Test Condition
R_L = ∞
THD = 10%
VS = 14.4V
V_S = 13.7V
P_O = 0.5 to 10W
f = 1KHz; Rg = 0
f = 10KHz; Rg = 0
differential input
single ended input
differential input
single ended input
Rg = 600Ω; ”A Weighted”
Rg = 600Ω; 22Hz to 22KHz
f = 100Hz; Vr = 1Vrms;
Rg = 0
f = 10KHz; Vr = 1Vrms;
Rg = 0
(–3dB)
V_CM = 1Vrms input referred
V_SB = 1.5V; P_Oref = 1W
V_M = 1.5V; P_Oref = 1W
V6 = 0 to VS, ; VS max. = 18V
Output low, sinked current
(V_pin10 = 1.5V)
Output high, leakage current
(V_pin10 = V_S, @ V_Smax = 18V)
Min.
8
23
36
32
45
40
25
25
45
Typ.
25
40
35
0.03
80
70
26
26
3
4
55
Max.
18
200
120
0.3
27
27
1
6
Unit
V
mA
mV
W
W
W
%
dB
dB
KΩ
KΩ
dB
dB
dB
µV
µV
dB
dB
75
KHz
60
dB
80
90
dB
1.5
V
3.5
V
100
µA
85
dB
1.5
V
3.5
V
100
µA
3.5
%
1
mA
10
µA
The TDA7376B is equipped with a programmable
clipping distortion detector circuitry that allows to
signal out the output stage saturation by providing
a current sinking into an open collector output
(DDout) when the total harmonic distortion of the
output signal reaches the preset level. The de-
sired threshold is fixed through an external divider
that produces a proper voltage level across the
THD set pin. Fig. 5 shows the THD detection
threshold versus the THD set voltage. Since it is
essential that the THD set voltage be proportional
to the supply voltage, fig. 5 shows its value as a
fraction of V_CC. The actual voltage can be com-
puted by multiplying the fraction corresponding to
the desired THD threshold by the application’s
supply voltage.
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