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TDA7490L Fiches technique(PDF) 5 Page - STMicroelectronics

No de pièce TDA7490L
Description  20W 20W STEREO CLASS-D AMPLIFIER 40W MONO IN BTL
Download  11 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7490L Fiches technique(HTML) 5 Page - STMicroelectronics

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TDA7490L
*: 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
Table 5. Electrical Characteristics
(Refer to the test circuit, VCC = ±19V; RL = 8
Ω; 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
16
W
W
Po(BTL)
Output Power in Bridge
Configuration
VS = ±20V; RL = 16
THD = 10%
THD=1%
40
32
W
W
VS =±15.5V; RL = 8
THD = 10%
THD=1%
40
32
W
W
Po
(1)
Output Power
RL = 4
Ω Vcc=±13.5V
THD = 10%
THD=1%
18
14.5
W
W
PD
Maximum Dissipated Power
VCC = ±19V; RL = 8
P
ο = 20W + 20W; THD = 10%
5.6
W
η
Efficiency (')
Po = 20W + 20W
86
%
THD
Total Harmonic Distortion
RL = 8
Ω; Po = 1 W
0.1
%
Imax
Overcurrent Protection
Threshold
RL = 0
5
A
Tj
Thermal Shut-down Junction
Temperature
150
°C
Gv
Closed Loop Gain
29
30
31
dB
∆Gv (3)
Gain Matching
-1
+1
dB
eN
Total Input Noise
RG = 50
A Curve
f = 20Hz to 22KHz
7
12
µV
µV
CT
Cross talk
f = 1 KHz, Po = 1W
55
dB
Ri
Input Resistance
20
30
k
SVR
Supply Voltage Rejection
f = 100Hz; Vr = 0.5
60
dB
Vrmax
Overvoltage Threshold (5)
55
60
V
Tr, Tt
Rising and Falling Time
50
70
ns
RDSON
Power Transistor on Resistance
0.4
0.8
Fsw (4)
Switching Frequency Range
100
200
230
KHz
MUTE & STAND-BY FUNCTIONS
VST-BY
Stand-by range
0
0 7
V
VMUTE
Mute Range
1.7
2.5
V
VPLAY
Play Range
4
5
V
AMUTE
Mute Attenuation
55
60
dB
IqST-BY
Quiescent Current @ Stand-by
3
5
mA


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