STMICROELECTRONICS TDA7490SA

TDA7490SA
10W +10W Stereo Class-D Amplifier
Features
■
FEATURES
■
10W + 10W CONTINUOUS OUTPUT
POWER: RL = 8Ω THD = 10%
■
HIGH EFFICIENCY
■
SINGLE SUPPLY AND SPLIT SUPPLY
OPERATION
■
POP NOISE FREE
■
ST-BY AND MUTE FEATURES
■
SHORT CIRCUIT PROTECTION
■
THERMAL OVERLOAD PROTECTION
■
EXTERNALLY SYNCHRONIZABLE
CLIPWATT 19
Description
The tda7490SA is a dual audio class-D amplifier
assembled in CLIPWATT 19 package specially
designed for high efficiency application mainly for
TV, LCD TV and Home Stereo sets.
.
Order codes
Part number
Temp range, °C
Package
Packing
TDA7490SA
0 to 70
CLIPWATT 19
Tube
November 2005
Rev 1
1/13
www.st.com
13
TDA7490SA
Contents
1
Typical application and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2
pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3
thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2
Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1
PCB and component layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2/13
TDA7490SA
1 Typical application and pin description
1
Typical application and pin description
1.1
typical application
Figure 1.
typical application and test circuit for single and split supply
IN1
REFERENCE
R1
27K
3
5
2
C5
1nF
T2
EXTERNAL
CLK
BOOSTRAP1
PWM STAGE
C3 330nF
INPUT1
1
DRIVER
C16
33nF
OUT1
6
9
8
C18
560pF
-VCC /GND
C15 2200µF
BOOTSTRAP2
C14 2200µF
17
+VCC2
IN2
C4 330nF
C6
1nF
GND
STBY/MUTE
C8
2.2µF
19
DRIVER
C17
33nF
C12
100nF
OUT2
15
C19
560pF
10
-VCC/GND
PWM STAGE
14
4
R6 10K
STBY
+VCC
REGULATOR
12
R4 30K
C20
220nF
R7
100
-VCC/GND
(**)
LOUDSPEAKER1
1000µF
18
13
C7
330pF
INPUT2
L1 30µ
OSCILLATOR
C2
330pF
TRIANGLE2
R3
22K
+VCC
C13
100nF
C1
100nF
TRIANGLE1
R2
22K
+VCC1
MUTE
16
7
+5V
-5V
C9
100nF
VREG
C10
100nF
C11
100nF
R9
1K
L2 30µ
C21
220nF
R8
100
-VCC/GND
(**)
LOUDSPEAKER2
1000µF
(*)
R10
1K
-VCC/GND
R5 10K
D99AU1066B
-VCC/GND
(*) Only for single Supply Solution
(**) To add externally the PCB for Single Supply
1.2
pin description
Figure 2.
pin connection
19
OUT2
18
+VCC2
17
BOOT2
16
VREG
15
IN2
14
+5V
13
TRIANGLE2
12
GND
11
N.C.
10
-VCC
9
-VCC
8
TRIANGLE1
7
-5V
6
REFERENCE
5
IN1
4
ST-BY/MUTE
3
BOOT1
2
+VCC1
1
OUT1
D04AU1542
3/13
TDA7490SA
Table 1.
1.3
N°
Pin
1
OUT 1
Output CH1
2
+VCC1
Positive Power Supply CH1
3
BOOT1
Bootstrap CH1
4
ST-BY/MUTE
State Pin
5
IN1
Input CH1
6
REFERENCE
7
-5V
8
TRIANGLE 1
9
-VCC
Negative Power Supply (Signal Ground)
10
-Vcc
Negative Power Supply (Power Ground) connected to tab
11
N.C.
12
GND
13
TRIANGLE 2
14
+5V
+5V regulator
15
IN 2
Input CH2
16
VREG
10V Regulator
17
BOOT 2
Bootstrap CH2
18
+VCC2
Positive Power Supply CH2
19
OUT 2
Output CH2
Function
Master Oscillator Setting Frequency
-5V Regulator
Triangular Waveform CH1
Ground
Triangular Waveform CH2
thermal data
Table 2.
Symbol
4/13
pin description
thermal data
Parameter
Rth j-case
Thermal Resistance Junction-case
Rth j-amb
Thermal Resistance Junction-ambient
Test Condition
Typ.
Max.
Unit
2
3
°C/W
48
°C/W
TDA7490SA
2
2 Electrical characteristcs
Electrical characteristcs
Table 3.
electrical characteristcs (Refer to the test circuit, VCC = ±13.5V; RL = 8Ω;
Demod. filter L = 33 µH, C = 220nF; f = 1KHz; R1 = 27kΩ; Tamb = 25°C unless otherwise
specified.)
Symbol
Parameter
VS
Supply Range
Iq
Total Quiescent Current
VOS
Test Condition
Min.
Typ.
±7
RL = ∞; no LC filter
Output Offset Voltage
Max.
Unit
±15
V
60
-150
THD = 10%
THD = 1%
mA
+150
mV
10
8.2
W
W
10
8
W
W
4
3
W
W
VCC = ±10V; RL = 4Ω
Po
Output Power
THD = 10%
THD = 1%
VCC = ±6V; RL = 4Ω
THD = 10%
THD = 1%
Maximum Dissipated Power
Po = 10+10W; THD = 10%
Efficiency (1)
Po = 10+10W; RL = 8Ω
86
%
THD
Total Harmonic Distortion
RL = 8Ω; Po = 0.5W
0.1
%
Imax
Overcurrent Protection
Threshold
RL = 0
2.5
A
PD
h
3.5
2
W
Tj
Thermal Shut-down Junction
Temperature
150
°C
GV
Closed Loop Gain
30
dB
∆GV
Gain Matching
eN
Total Input Noise
CT
Cross Talk
Ri
Input Resistance
-1
A Curve
f = 20Hz to 22KHz
f = 1KHz
f = 100Hz; Vr = 0.5
1
dB
7
µV
12
µV
t.b.d.
dB
30
kΩ
60
dB
SVR
Supply Voltage Rejection
Vrmax
Overvoltage Protection
Threshold
Tr, Tf
Rising and Falling Time
50
ns
Power Transistor on Resistance
0.3
W
RDSON
FSW
Switching Frequency
30
Internal Oscillator
180
V
200
220
KHz
5/13
TDA7490SA
2 Electrical characteristcs
electrical characteristcs (Refer to the test circuit, VCC = ±13.5V; RL = 8Ω;
Demod. filter L = 33 µH, C = 220nF; f = 1KHz; R1 = 27kΩ; Tamb = 25°C unless otherwise
specified.)
Table 3.
Symbol
Parameter
Output Switching Frequency
Range
FSWR
Test Condition
Min.
with Internal Oscillator (2)
with external Oscillator (3)
Typ.
Max.
Unit
140
250
KHz
100
250
KHz
0
0.7
V
MUTE & STAND-BY FUNCTIONS
VST-BY
Stand-by range
VMUTE
Mute Range
1.7
2.5
V
VPLAY
Play Range
4
5
V
AMUTE
Mute Attenuation
60
IqST-BY
Quiescent Current @ Stand-by
1.5
dB
2
mA
Note: 1 : PO = measured across the load using the following inductor: SUMIDA RCH-108-330K
------------- + 23 with R1 in KΩ; Fsw in KHz R1
2 : Fsw = 4810
R1
3 : Fsw = F sw = ⎛⎝ ---⎞⎠ ⋅ F est with Fext, the frequency of the external oscillator
4
1
Figure 3.
distortion vs output power
Figure 4.
THD(%)
output Power vs Supply Voltage
(single)
Po(W)
10
14
5
12
Vs =27V
2
Rl =8 ohm
1
Rl = 8 ohm
f = 1KHz
10
F=1KHz
0.5
8
0.2
6
THD=10%
0.1
4
0.05
THD=1%
2
0.02
0.01
100m
200m
500m
1
Pout(W)
6/13
2
5
10
20
0
+14
+16
+18
+20
+22
Vs (V)
+24
+26
+28
+30
TDA7490SA
Figure 5.
2 Electrical characteristcs
output power vs supply voltage
(single)
Figure 6.
Po(W)
14
dissipated power vs output power
Pd(W)
3.5
12
3
Rl = 6 ohm
f = 1KHz
10
2.5
8
Vs =+/- 13.5V
THD=10%
2
6
Rload = 8ohm (both ch)
f = 1KHz
THD=1%
4
1.5
2
0
+14
1
+16
+18
+20
+22
+24
0
+26
2
4
6
Figure 7.
8
10
12
2 x Po(W)
Vs (V)
output power vs supply voltage
(single)
Figure 8.
Po(W)
quiescent current vs supply voltage
Iq(mA)
12
70
Rl = 4 ohm
10
65
THD=10%
f = 1KHz
8
Rl = No load
No LC filter
60
6
55
THD=1%
4
50
2
45
0
+14
40
+15
+16
+17
+18
+19
+20
+21
+22
Vs (V)
Figure 9.
7
8
9
10
11
Vs=(+/-V)
12
13
14
15
distortion vs output power
THD(%)
10
Vs = +/- 13.5V
1
Rl = 8 ohm
F = 1KHz
0.1
0.01
100m 200m
500m
1
2
5
10
Pout(W)
7/13
TDA7490SA
2 Electrical characteristcs
Figure 10. turn on/off suggested sequence
+VS
(V)
13.5
t
-VS
-13.5
VIN
(mV)
Vpin4
(V)
4
1.7
0.7
Iq
(mA)
VOUT
(V)
STDBY
MUTE
8/13
STDBY
PLAY
D03AU1566
MUTE
TDA7490SA
3
PCB
3.1
PCB and component layout
3 PCB
Figure 11. PCB component layout of the test circuit
Figure 12. PCB copper bottom (top view)
9/13
TDA7490SA
3 PCB
Figure 13. PCB copper top (top view)
10/13
TDA7490SA
4
4 Package information
Package information
In order to meet environmental requirements, ST offers these devices in ECOPACK® packages.
These packages have a Lead-free second level interconnect. The category of second Level
Interconnect is marked on the package and on the inner box label, in compliance with JEDEC
Standard JESD97. The maximum ratings related to soldering conditions are also marked on
the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at:
www.st.com.
Figure 14. clipwatt19 mechanical data & package dimensions
mm
inch
DIM.
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
A
3.2
0.126
B
1.05
0.041
C
0.15
D
1.50
E
0.49
F
0.47
0.50
F1
0.006
0.061
0.55
0.019
0.58
0.018
0.022
0.020
0.1
0.004
G
0.87
1.00
1.13
0.034
0.039
0.044
G1
17.87
18.0
18.13
0.703
0.708
0.713
H1
12.0
H2
18.6
H3
0.480
0.732
19.85
0.781
L
17.9
L1
14.55
L2
10.7
OUTLINE AND
MECHANICAL DATA
11.0
0.704
0.572
11.2
0.421
0.433
L3
5.50
0.217
M
2.54
0.100
M1
2.54
0.100
0.441
Clipwatt19
7390917 A
11/13
TDA7490SA
5 Revision history
5
12/13
Revision history
Date
Revision
24-Nov-2005
1
Changes
Initial release.
TDA7490SA
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics.
All other names are the property of their respective owners
© 2005 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
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13/13