TDA7482 Просмотр технического описания (PDF) - STMicroelectronics
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TDA7482 Datasheet PDF : 7 Pages
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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.)
Symbol
Parameter
Test Condition
Min. Typ. Max.
VS
Supply Range
Iq
Total Quiescent Current
VOS
Output Offset Voltage
PO
Output Power
RL = ∞, No LC Filter
Play Condition
THD = 10%
THD = 1%
±10
±25
40
60
–70
-30
10
20
25
14
18
PO
Output Power
RL = 4Ω ; VCC = ±16V;
THD = 10%
25
THD = 1% (*)
18
PD
Maximum Dissipated Power
VCC =±21V; RL = 8Ω;
3.8
PO = 25W THD 10%
η
Efficiency ≡ P-----O---P--+--o---P----D-- ≡ -PP----oI- (∗∗)
VCC = ±21V; RL = 8Ω;
PO = 18W THD 10%
87
ηmax
THD
Imax
Tj
Top Efficiency maximum
Total Harmonic Distortion
Overcurrent Protection Threshold
Thermal Shut-down Junction
Temperature
VCC = ±25V; RL = 8Ω;
PO = 43W THD 20%
RL = 8Ω; PO = 1W
RL = 0
88.5
0.1
3.5
5
150
GV
Closed Loop Gain
eN
Total Input Noise
A Curve
f = 20Hz to 22KHz
29
30
31
7
12
VCCTOT MAX Maximum Total VCC Protection
Ri
Input Resistance
SVR
Supply Voltage Rejection
Tr, Tf
Rising and Falling Time
RDSON Power Transistor on Resistance
FSW-OP
Switching Frequency Operative
Range
f = 100Hz; Vr = 0.5
50
20
30
46
60
50
0.4
100
200
FSW
Switching Frequency
BF
Zero Signal Frequency
Constant (***)
100
120
140
1.4x109
RF
Frequency Controller Resistor
Range (****)
7
12
14
MUTE & STAND-BY FUNCTIONS
VST-BY
VMUTE
VPLAY
AMUTE
IqST-BY
Stand-by range
Mute Range
Play Range (1)
Mute Attenuation
Quiescent Current @ Stand-by
0.8
1.8
2.5
4
60
80
3
5
*:
The output LC filtermust be changed to: L = 30µH; 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
Unit
V
mA
mV
W
W
W
W
W
%
%
%
A
°C
dB
µV
µV
V
kΩ
dB
ns
Ω
KHz
KHz
HzΩ
KΩ
V
V
V
dB
mA
(1)
For V10 >5.2V, an input impedance of 10KΩ is to be considered
3/7
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