TDA7376PD_09 Datasheet, PDF (7/14 Pages) STMicroelectronics – 2 x 35 W power amplifier for car radio

TDA7376PD
Electrical specifications
Table 4. Electrical characteristics (continued)
Symbol
Parameter
Test condition
Min.
differential input
45
R_IN Input impedance
Single Ended input
40
G_V Voltage gain
differential input
25
Single Ended input
25
ΔG_V Channel gain balance
E_IN Input noise voltage
SVR Supply voltage rejection
BW Power bandwidth
-
-
R_g = 600 Ω; "A" weighted
-
R_g = 600 Ω; 22 Hz to 33 kHz
f = 100 Hz; V_r = 1 Vrms; R_g = 0; 45
f = 10 Hz; V_r = 1 Vrms; R_g = 0;
(-3dB)
75
CMRR Common mode rejection ratio V_CM = 1 Vrms input referred
60
A_SB Standby attenuation
V_SB = 1.5V; P_{O ref} = 1 W
80
V_{SB IN} Standby input threshold
-
-
V_{SB OUT} Standby output threshold
-
3.5
I_sb
Standby current consumption V_SB = 0V
-
A_M Mute attenuation
V_M = 1.5 V; P_Oref = 1 W
-
V_{M IN} Mute in threshold
-
-
V_{M OUT} Mute out threshold
-
3.5
I₆
Mute pin current
V₆ = 0 to V_S,; V_{S max.} = 18 V
-
D_DL Distortion detection level ⁽²⁾
-
3.5
Output low, sinked current
1
Distortion detector output DC ^(Vpin10 ^{= 1.5 V)}
D_{DOUT current}
Output high, leakage current
-
(V_pin10 = V_S, @ V_Smax = 18 V)
1. Saturated square wave output
2. See Figure 3 for THD setting.
Typ.
-
26
26
-
3
4
55
-
-
90
-
-
-
85
-
-
-
-
-
-
Max.
-
27
27
1
6
-
-
-
1.5
-
20
-
1.5
-
100
-
-
10
Unit
kΩ
dB
dB
dB
μV
dB
kHz
dB
dB
V
V
μA
dB
V
V
μA
%
mA
μA
The TDA7376PD 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 (D_DOUT) when the total harmonic distortion of the output signal reaches the
preset level. The desired threshold is fixed through an external divider that produces a
proper voltage level across the THD set pin. Figure 3 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, Figure 4 shows its value as a fraction of V_CC. The actual voltage can be
computed by multiplying the fraction corresponding to the desired THD threshold by the
application’s supply voltage.
Doc ID 10260 Rev 3
7/14