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TDA7490L Datasheet

STEREO CLASS-D AMPLIFIER 28W MONO

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TDA7490L
15W + 15W STEREO CLASS-D AMPLIFIER
28W MONO IN BTL
15W + 15W OUTPUT POWER:
RL = 8/4Ω; THD = 10%
HIGH EFFICIENCY
WIDE SUPPLY VOLTAGE RANGE (FROM
±10 TO ±25V)
SPLIT SUPPLY
TURN OFF/ON POP FREE
ST-BY AND MUTE FEATURES
SHORT CIRCUIT PROTECTION ACROSS
THE LOAD
THERMAL OVERLOAD PROTECTION
EXTERNALLY SINCHRONIZABLE
BRIDGE CONFIGURATION
Flexiwatt 25
ORDERING NUMBER: TDA7490L
DESCRIPTION
The TDA7490L is a dual audio class D amplifier
assembled in Flexiwatt 25 package; it is specially
designed for high efficiency application mainly for
TV and Home Stereo sets.
Figure 1. Test and application circuit. (Stereo Configuration)
R1 10K
MUTE
STBY
R3
10K
R2
30K
C27
2.2µF
INPUT1
C1 330nF
C2
1nF
C3
100nF
C4
100nF
R1 10K
-VCC
-VCC
INPUT2
C7 100nF
R 6.8
C5 330nF
C6
1nF
R17 52.3K
C26 470pF C25 470pF
R21 4.7K
+VCC
-VCC
+VCC
R20 R4 C23 C22 C21
68K
130K
2200µF 100nF 2200µF
67
9 14
24
10
G=2.5
PREAMPLIFIER1
INTEGRATOR1
12
13
16
1
25
PREAMPLIFIER2
G=2.5
18
INTEGRATOR2
19 17
PWM-stage1
OSC
PWM-stage2
20
24
5
3
11
8
15
23
21
22
C20
33nF
C18 330pF
R14 22K
C17
24pF
C16 330pF
R12 22K
C14
33nF
R5 4.7K
C8 470pF
R6 C9 470pF
68K
C28
2200µF
C11
100nF
C12
2200µF
-VCC
+VCC
R9 52.3K
-VCC
R15
100
C19
560pF
L1 30µ
R13
10K
L2 30µ
C15
560pF
R11
100
-VCC
D98AU978A
OUT1
C10
220nF
EXT_CK
OUT2
C29
220nF
March 2001
1/9


STMicroelectronics Electronic Components Datasheet

TDA7490L Datasheet

STEREO CLASS-D AMPLIFIER 28W MONO

No Preview Available !

TDA7490L
Figure 2. Test and application circuit. (Bridge Configuration)
470pF
470pF R5 52.3K
www.datasheet4u.com
C40 R4
68K
C41
79
INPUT 10
PRE
-
Int.
+
PWM-stage
3
R63
4.7K
PRE
18
+
Int.
-
19 17
470pF
470pF
PWM-stage
23
C60 R61
68K
C59
R62 52.3K
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Ptot
Tstg, Tj
Top
V6,8,10,18
Parameter
DC Supply Voltage (no signal)
Power Dissipation Tcase = 70°C
Storage and Junction Temperature
Operating Temperature Range
Maximum Voltage on pins # 6,8,10,18 referred to GND
The LC filter is optimized for 8
(<->LC filter for 4in single-ended)
It hos to be changed for other loads
L9 30µ
C23
235nF
C26
470nF
R27
10
C24
235nF
L10 30µ
R28
10
C29
470nF
dumping
(common
mode)
R25
Rload
D99AU1081
Value
±30
35
–40 to 150
0 to 70
±5
Unit
V
W
°C
°C
V
THERMAL DATA
Symbol
Rth j-case
Parameter
Thermal Resistance Junction-case
Typ.
1
Max.
Unit
°C/W
2/9


Part Number TDA7490L
Description STEREO CLASS-D AMPLIFIER 28W MONO
Maker STMicroelectronics
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TDA7490L Datasheet PDF






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