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TDA7482 Datenblatt(PDF) 3 Page - STMicroelectronics

Teilenummer TDA7482
Bauteilbeschribung  25W MONO CLASS-D AMPLIFIER
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
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TDA7482
Table 5. Electrical Characteristcs (Refer to the test circuit, VCC = ±21V; RL = 8Ω; RS = 50Ω;
RF = 12KΩ; Demod.. filter L = 60µH, C = 470nF; f = 1KHz; Tamb = 25°‘C unless otherwise specified.)
*:
The output LC filtermust be changed to: L = 30
µH; C = 1µF
**:
PO = measured across the load using the following inductor: COIL 58120 MPPA2 (magnetics) TURNS: 28 φ 1mm
***:
The zero-signal switching frequency can be obtained using the following expression: FSW= BF/RF
****:
The maximum value of RF is related to the maximum possible value for the voltage drop on RF itself
(1)
For V10 >5.2V, an input impedance of 10K
Ω is to be considered
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VS
Supply Range
±10
±25
V
Iq
Total Quiescent Current
RL =
∞, No LC Filter
40
60
mA
VOS
Output Offset Voltage
Play Condition
–70
-30
10
mV
PO
Output Power
THD = 10%
THD = 1%
20
14
25
18
W
W
PO
Output Power
RL = 4Ω ; VCC = ±16V;
THD = 10%
THD = 1% (*)
25
18
W
W
PD
Maximum Dissipated Power
VCC =±21V; RL = 8Ω;
PO = 25W THD 10%
3.8
W
η
Efficiency
(∗∗)
VCC = ±21V; RL = 8Ω;
PO = 18W THD 10%
87
%
ηmax
Top Efficiency maximum
VCC = ±25V; RL = 8Ω;
PO = 43W THD 20%
88.5
%
THD
Total Harmonic Distortion
RL = 8Ω; PO = 1W
0.1
%
Imax
Overcurrent Protection Threshold
RL = 0
3.5
5
A
Tj
Thermal Shut-down Junction
Temperature
150
°C
GV
Closed Loop Gain
29
30
31
dB
eN
Total Input Noise
A Curve
f = 20Hz to 22KHz
7
12
µV
µV
VCCTOT MAX Maximum Total VCC Protection
50
V
Ri
Input Resistance
20
30
k
SVR
Supply Voltage Rejection
f = 100Hz; Vr = 0.5
46
60
dB
Tr, Tf
Rising and Falling Time
50
ns
RDSON
Power Transistor on Resistance
0.4
FSW-OP
Switching Frequency Operative
Range
100
200
KHz
FSW
Switching Frequency
100
120
140
KHz
BF
Zero Signal Frequency
Constant (***)
1.4x109
Hz
RF
Frequency Controller Resistor
Range (****)
712
14
K
MUTE & STAND-BY FUNCTIONS
VST-BY
Stand-by range
0.8
V
VMUTE
Mute Range
1.8
2.5
V
VPLAY
Play Range (1)
4
V
AMUTE
Mute Attenuation
60
80
dB
IqST-BY
Quiescent Current @ Stand-by
3
5
mA
P
o
P
O
P
D
+
---------------------
P
o
P
I
------


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