TDA7490L 查看數據表（PDF） - STMicroelectronics
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TDA7490L Datasheet PDF : 11 Pages
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TDA7490L
Table 5. Electrical Characteristics
(Refer to the test circuit, VCC = ±19V; RL = 8Ω; Demod. filter L = 30µH, C = 220nF; f = 1KHz; fsw = 200kHz;
Tamb = 25°C unless otherwise specified.)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
VS Supply Range
±10
±25
V
Iq Total Quiescent Current
RL = ∞ no LC filter
70
120 mA
VOS Output Offset Voltage
-150
+150 mV
Po Output Power
THD = 10%
THD= 1%
20
W
16
W
Po(BTL) Output Power in Bridge
Configuration
VS = ±20V; RL = 16Ω
THD = 10%
THD=1%
40
W
32
W
VS =±15.5V; RL = 8Ω
THD = 10%
THD=1%
40
W
32
W
Po(1) Output Power
t(s) PD Maximum Dissipated Power
uc η Efficiency (')
rod THD Total Harmonic Distortion
Imax Overcurrent Protection
P Threshold
te Tj Thermal Shut-down Junction
le Temperature
o Gv Closed Loop Gain
bs ∆Gv (3) Gain Matching
O eN Total Input Noise
- RG = 50Ω
) CT Cross talk
t(s Ri Input Resistance
c SVR Supply Voltage Rejection
du Vrmax Overvoltage Threshold (5)
ro Tr, Tt Rising and Falling Time
P RDSON Power Transistor on Resistance
te Fsw (4) Switching Frequency Range
le MUTE & STAND-BY FUNCTIONS
so VST-BY Stand-by range
bVMUTE Mute Range
O VPLAY Play Range
RL = 4Ω Vcc=±13.5V
THD = 10%
THD=1%
VCC = ±19V; RL = 8Ω
Pο = 20W + 20W; THD = 10%
Po = 20W + 20W
RL = 8Ω; Po = 1 W
RL = 0
A Curve
f = 20Hz to 22KHz
f = 1 KHz, Po = 1W
f = 100Hz; Vr = 0.5
18
W
14.5
W
5.6
W
86
%
0.1
%
5
A
150
°C
29
30
31
dB
-1
+1
dB
7
µV
12
µV
55
dB
20
30
kΩ
60
dB
55
60
V
50
70
ns
0.4
0.8
Ω
100 200 230 KHz
0
07
V
1.7
2.5
V
4
5
V
AMUTE Mute Attenuation
55
60
dB
IqST-BY Quiescent Current @ Stand-by
3
5
mA
*: Po = measured across the load using the following inductor: COIL58120 MPPA 2 (magnectics) TURNS= 20∅ 1 mm
(1) L = 15µH, C = 470nF
(3) ∆Gv is intended with R2, R17, R5, R9 1% precision
(4) Fsw = 0.25 · (1/(300ns + R13 · (C17 + 76pF) . 0.85)
(5) VRMAX = (+Vcc) - (-Vcc) when VR ≥VRMAX the device goes in Stand-By mode
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