TDA7297D [STMICROELECTRONICS]

10W+10W DUAL BRIDGE AMPLIFIER; 10W + 10W双桥式放大器
TDA7297D
型号: TDA7297D
厂家: ST    ST
描述:

10W+10W DUAL BRIDGE AMPLIFIER
10W + 10W双桥式放大器

放大器
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 = 8, 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 = 8, 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,Òa,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  
STMicroelectronics GROUP OF COMPANIES  
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -  
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States  
www.st.com  
11/11  

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