TDA7297D [STMICROELECTRONICS]
10W+10W DUAL BRIDGE AMPLIFIER; 10W + 10W双桥式放大器
| 型号： | TDA7297D |
| 厂家： | 
ST |
| 描述： | 10W+10W DUAL BRIDGE AMPLIFIER |
| 文件： | 总11页 (文件大小：181K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TDA7297D
10W+10W DUAL BRIDGE AMPLIFIER
1 FEATURES
Figure 1. Package
■ TECHNOLOGY BI20II
■ WIDE SUPPLY VOLTAGE RANGE (6.5 - 18V)
■ OUTPUT POWER 10+10W @ THD = 10%,
PowerSO20 (SLUG UP)
R = 8Ω, V = 13V
L
CC
■ MINIMUM EXTERNAL COMPONENTS
– NO SVR CAPACITOR
Table 1. Order Codes
– NO BOOTSTRAP
Part Number
Package
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN
■ STAND-BY & MUTE FUNCTIONS
■ SHORT CIRCUIT PROTECTION
TDA7297D
PowerSO20 (SLUG UP)
2 DESCRIPTION
■ THERMAL OVERLOAD PROTECTIONE
The TDA7297D is a dual bridge amplifier specially
designed for Home Audio, Plasma TV, LCD TV appli-
cations.
Figure 2. TEST AND APPLICATION CIRCUIT
V
CC
R1
47K
C1
470µF
C2
100nF
C7
100nF
6
15
JP1
C3 0.22µF
+5V
7
IN1
+
-
2
OUT1+
R2
47K
S-GND
13
9
R3 10K
ST-BY
C4
10µF
-
5
OUT1-
OUT2+
Vref
+
C5 0.22µF
14
8
IN2
+
-
19
R4 10K
MUTE
C6
1µF
1
10
11
20
-
16
OUT2-
+
PW-GND
D02AU1407
REV. 1
1/11
May 2004
TDA7297D
Table 2. Absolute Maximum Ratings
Symbol
Parameter
Value
20
Unit
V
V
s
Supply Voltage
I
O
Output Peak Current (internally limited)
2
A
P
tot
Total Power Dissipation (T
= 70°C
33
W
amb
T
Operating Temperature
Storage and Junction Temperature
0 to 70
-40 to 150
°C
°C
op
T
T
j
stg,
Table 3. Thermal Data
Symbol
Parameter
Value
Unit
R
Thermal Resistance Junction-case
2.1
°C/W
th j-case
Figure 3. PIN CONNECTION
PW GND
OUT2+
N.C.
20
19
18
17
16
15
14
13
12
11
1
2
PW GND
OUT1+
N.C.
3
N.C.
4
N.C.
OUT2-
VCC
5
OUT1-
VCC
6
IN2-
7
IN1
SGND
N.C.
8
MUTE
ST BY
PW GND
9
PW GND
10
D02AU1408
2/11
TDA7297D
Table 4. Electrical Characteristcs (V
specified)
= 13V, R = 8Ω, f = 1KHz, T
= 25°C unless otherwise
CC
L
amb
Symbol
Parameter
Supply Range
Test Condition
Min.
Typ.
Max.
18
Unit
V
V
V
6.5
8.3
CC
I
q
Total Quiescent Current
Output Offset Voltage
Output Power
R = ∞
L
50
65
mA
mV
W
120
OS
P
O
THD 10%
10
THD
Total Harmonic Distortion
P
= 1W
0.1
0.3
1
%
O
P
= 0.1W to 5W
%
O
f = 100Hz to 15KHz
SVR
CT
Supply Voltage Rejection
Crosstalk
f = 100Hz, VR =0.5V
40
46
60
56
60
dB
dB
dB
°C
dB
dB
KΩ
V
A
MUTE
Mute Attenuation
80
T
w
Thermal Threshold
Closed Loop Voltage Gain
Voltage Gain Matching
Input Resistance
150
32
G
V
31
33
∆G
0.5
V
R
25
2.3
0.8
30
2.9
1.3
i
VT
VT
Mute Threshold
Vo = -30dB
4.1
1.8
100
MUTE
ST-BY
ST-BY
St-by Threshold
V
I
St-by Current
µA
e
N
Total Output Noise Voltage
A Curve
f = 20Hz to 20KHz
150
220
µV
µV
500
3 APPLICATIVE SUGGESTIONS
STAND-BY AND MUTE FUNCTIONS
3.1 Microprocessor Application
In order to avoid annoying "Pop-Noise" during Turn-On/Off transients, it is necessary to guarantee the right St-
by and mute signals sequence.It is quite simple to obtain this function using a microprocessor (Fig. 4 and 5).
At first St-by signal (from µP) goes high and the voltage across the St-by terminal (Pin 9) starts to increase ex-
ponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to
avoid "POP" and "CLICK" on the outputs.
When this voltage reaches the St-by threshold level, the amplifier is switched-on and the external capacitors in
series to the input terminals (C1, C3) start to charge.
It's necessary to mantain the mute signal low until the capacitors are fully charged, this to avoid that the device
goes in play mode causing a loud "Pop Noise" on the speakers.
A delay of 100-200ms between St-by and mute signals is suitable for a proper operation.
3/11
TDA7297D
Figure 4. Microprocessor Application
V
CC
C5
470µF
C6
100nF
C1 0.22µF
6
15
7
9
IN1
+
-
2
OUT1+
R1 10K
ST-BY
C2
10µF
S-GND
µP
13
-
5
OUT1-
OUT2+
Vref
+
C3 0.22µF
14
IN2
+
-
19
R2 10K
MUTE
8
C4
1µF
1
10
11
20
-
16
OUT2-
PW-GND
+
D02AU1409
Figure 5. Microprocessor Driving Signals
+VS(V)
+13V
VIN
(mV)
VST-BY
pin 9
1.8
1.3
0.8
VMUTE
pin 8
4.1
2.9
2.3
Iq
(mA)
VOUT
(V)
OFF
PLAY
MUTE
ST-BY
OFF
D02AU1411-Mod
ST-BY
MUTE
4/11
TDA7297D
Figure 6. THD+N vs Output Power
Figure 9. Frequency Response
THD(%)
10
Level(dBr)
5.0000
5
4.0000
Vcc=13V
2
3.0000
2.0000
1.0000
0.0
Vcc = 16.5V
R l = 8 ohm
Pout = 1W
Rl= 8ohm
1
F=1KHz
0.5
f=5KHz
0.2
0.1
-1.000
-2.000
-3.000
-4.000
-5.000
0.05
f=1KHz
0.02
0.01
100m
200m
500m
1
2
5
10
20
10
100
1k
frequency (Hz)
10k
100k
2 x Pout (W)
Figure 7. THD+N vs Output Power
Figure 10. Output Power vs supply Voltage
THD(%)
10
16
14
12
5
2
Vcc=11V
Rl =8ohm
Rl= 8ohm
F=1KHz
10
1
0.5
0.2
F=1KHz
8
f=5KHz
6
d=10%
4
0.1
d=1%
2
0
0.05
f=1KHz
0.02
0.01
6
7
8
9
10 11 12 13 14 15 16
Vs (V)
100m
200m
500m
1
2
5
10
2x Pout (W)
Figure 8. THD+N vs Frequency
Figure 11. Power Dissipation vs Pout
THD(%)
10
11
10
9
5
Vcc=13V
Rl= 8ohm
Po = 5W
2
1
8
7
6
5
0.5
4
3
2
1
0
Vcc=13V
Rl = 8 ohm
F=1KHz
0.2
0.1
0.05
0.02
0.01
0
1
2
3
4
5
6
7
8
9
10 11
2xPout(W)
20
50
100
200
500
1k
2k
5k
10k
Frequency (Hz)
5/11
TDA7297D
Figure 12. Mute Attenuation vs. Vpin 8t
Figure 14. Quiescent Curent vs. Supply Voltage
Attenuation (dB)
Iq (mA)
70
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
65
60
55
50
45
40
35
30
6
7
8
9
10
11
12
13
14
15
16
17 18
1
1.5
2
2.5
3
3.5
4
4.5
5
Vsupply(V)
Vpin.6(V)
Figure 13. Standard-By Attenuation vs Vpin. 9
Attenuation (dB)
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
2.2 2.4
Vpin.7 (V)
6/11
TDA7297D
Figure 15. PC Board Component Layout
Sign GND
Figure 16. Evaluation Board Top Layer Layout
7/11
TDA7297D
Figure 17. Evaluation Board Bottom Layer Layout
8/11
TDA7297D
Figure 18. PowerSO20 (SLUG UP) Mechanical Data & Package Dimensions
mm
inch
DIM.
MIN.
3.25
3
TYP. MAX. MIN.
TYP. MAX.
0.138
OUTLINE AND
MECHANICAL DATA
A
A2
A4
A5
a1
b
3.5
3.3
1
0.128
3.15
0.2
0.118 0.124 0.130
0.031 0.039
0.8
0.15
0.030
0.4
0.25 0.006 0.008 0.010
-0.040 0.0012
0.53 0.016
0.32 0.009
-0.0016
0.021
0.012
0.630
0.385
c
0.23
15.8
9.4
D (1)
D1
D2
E
16
0.622
0.370
9.8
1
0.039
13.9
14.5 0.547
11.1 0.429
2.9
0.570
0.437
0.114
0.244
E1 (1) 10.9
E2
E3
e
5.8
6.2
0.228
1.12
1.27
1.42 0.044 0.050 0.056
0.450
e3
G
H
h
11.43
0
0.1
15.9
1.1
0
0.004
0.625
0.043
0.043
15.5
0.61
L
0.8
1.1
0.031
N
R
S
10¡ (max)
0.6
0.024
0¡ (min.) 8¡ (max.)
5¡ (min.) 7¡ (max.)
V
PowerSO20 (SLUG UP)
(1) ÒD and E1Ódo not include mold flash or protusions.
- Mold flash or protusions shall not exceed 0.15mm (0.006Ó)
- Critical dimensions: ÒEÓ,Òa1Ó,ÒeÓand ÒGÓ.
H
E3
R
N
N
A4
A5
A2
A
c
V
b
e
DETAIL A
E2
E
D2 (x2)
e3
M
h x 45û
1
10
DETAIL A
0.35
E2
E1
Gage Plane
a1
- C -
S
SEATING PLANE
L
G
C
(COPLANARITY)
D1
20
11
PSO20DME
D
0088529 C
9/11
TDA7297D
Table 5. Revision History
Date
Revision
Description of Changes
May 2004
1
First Issue
10/11
TDA7297D
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
© 2004 STMicroelectronics - All rights reserved
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