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TDA7376PD Scheda tecnica(PDF) 7 Page - STMicroelectronics

Il numero della parte TDA7376PD
Spiegazioni elettronici  2 x 35 W power amplifier for car radio
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7376PD Scheda tecnica(HTML) 7 Page - STMicroelectronics

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TDA7376PD
Electrical specifications
Doc ID 10260 Rev 3
7/14
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 (DDOUT) 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 VCC. The actual voltage can be
computed by multiplying the fraction corresponding to the desired THD threshold by the
application’s supply voltage.
RIN
Input impedance
differential input
Single Ended input
45
40
--
k
Ω
GV
Voltage gain
differential input
25
26
27
dB
Single Ended input
25
26
27
dB
ΔG
V
Channel gain balance
-
-
-
1
dB
EIN
Input noise voltage
Rg = 600 Ω; "A" weighted
Rg = 600 Ω; 22 Hz to 33 kHz
-
3
46
μV
SVR
Supply voltage rejection
f = 100 Hz; Vr = 1 Vrms; Rg = 0;
f = 10 Hz; Vr = 1 Vrms; Rg = 0;
45
55
-dB
BW
Power bandwidth
(-3dB)
75
-
-
kHz
CMRR
Common mode rejection ratio
VCM = 1 Vrms input referred
60
-
-
dB
ASB
Standby attenuation
VSB = 1.5V; PO ref = 1 W
80
90
dB
VSB IN
Standby input threshold
-
-
-
1.5
V
VSB OUT
Standby output threshold
-
3.5
-
-
V
Isb
Standby current consumption
VSB = 0V
-
-
20
μA
AM
Mute attenuation
VM = 1.5 V; POref = 1 W
-
85
-
dB
VM IN
Mute in threshold
-
-
-
1.5
V
VM OUT
Mute out threshold
-
3.5
-
-
V
I6
Mute pin current
V6 = 0 to VS,; VS max. = 18 V
-
-
100
μA
DDL
Distortion detection level (2)
-3.5
-
-
%
DDOUT
Distortion detector output DC
current
Output low, sinked current
(
Vpin10 = 1.5 V)
1-
-
mA
Output high, leakage current
(Vpin10 = VS, @ VSmax = 18 V)
--
10
μA
1.
Saturated square wave output
2.
See Figure 3 for THD setting.
Table 4.
Electrical characteristics (continued)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit


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