Advertisement
Quick Links
70V - 60W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
1
FEATURES
MULTIPOWER BCD TECHNOLOGY
■
VERY HIGH OPERATING VOLTAGE RANGE
■
(±35V)
DMOS POWER STAGE
■
HIGH OUTPUT POWER (UP TO 60W MUSIC
■
POWER)
MUTING/STAND-BY FUNCTIONS
■
NO SWITCH ON/OFF NOISE
■
NO BOUCHEROT CELLS
■
VERY LOW DISTORTION
■
VERY LOW NOISE
■
SHORT CIRCUIT PROTECTION
■
THERMAL SHUTDOWN
■
2
DESCRIPTION
The TDA7296 is a monolithic integrated circuit in
Multiwatt15 package, intended for use as audio
class AB amplifier in Hi-Fi field applications (Home
Stereo, self powered loudspeakers, Topclass TV).
Figure 2. Typical Application and Test Circuit
C2
22µF
R1 22K
VM
VSTBY
C3 10µF
Note: The Boucherot cell R6, C10, normally not necessary for a stable operation it could
February 2005
R3 22K
R2
680Ω
IN-
2
C1 470nF
IN+
3
IN+MUTE
4
R5 10K
MUTE
10
MUTE
STBY
9
STBY
R4 22K
C4 10µF
be needed in presence of particular load impedances at V
Figure 1. Package
Multiwatt15V
Table 1. Order Codes
Part Number
TDA7296
TDA7296HS
Thanks to the wide voltage range and to the high
out current capability it is able to supply the high-
est power into both 4Ω and 8Ω loads even in pres-
ence of poor supply regulation, with high Supply
Voltage Rejection.
The built in muting function with turn on delay sim-
plifies the remote operation avoiding switching on-
off noises.
C7 100nF
+Vs
7
-
+
THERMAL
SHUTDOWN
1
8
STBY-GND
-Vs
C9 100nF
<±25V.
S
TDA7296
Multiwatt15H
(Short Leads)
Multiwatt15V
Multiwatt15H (Short Leads)
+Vs
C6 1000µF
+PWVs
13
14
OUT
C5
22µF
6
BOOT-
STRAP
S/C
PROTECTION
15
-PWVs
C8 1000µF
D93AU011
-Vs
Package
R6
2.7Ω
C10
100nF
Rev. 10
1/15
Advertisement
Related Manuals for ST TDA7296
Summary of Contents for ST TDA7296
- Page 1 Supply Voltage Rejection. DESCRIPTION The built in muting function with turn on delay sim- The TDA7296 is a monolithic integrated circuit in plifies the remote operation avoiding switching on- Multiwatt15 package, intended for use as audio off noises.
- Page 2 TDA7296 Figure 3. Pin Connection Table 2. Absolute Maximum Ratings Symbol Parameter Value Unit ±35 Supply Voltage (No Signal) Output Peak Current Power Dissipation T = 70°C case °C Operating Ambient Temperature Range 0 to 70 °C Storage and Junction Temperature Table 3.
- Page 3 TDA7296 Table 4. Electrical Characteristcs (Refer to the Test Circuit V = ±24V, R = 8Ω, G = 30dB; R = 50Ω; = 25°C, f = 1 kHz; unless otherwise specified). Symbol Parameter Test Condition Min. Typ. Max. Unit ±10 ±35...
- Page 4 TDA7296 Figure 5. P.C.B. and Components Layout of the Circuit of figure 2. Note: The Stand-by and Mute functions can be referred either to GND or -VS. On the P.C.B. is possible to set both the configuration through the jumper J1.
- Page 5 Closed Loop Gain Decrease of Gain Increase of Gain Set to 30db (**) R3 (*) Increase of Gain Decrease of Gain St-by Time Constant Larger St-by Smaller St-by ON/OFF ON/OFF Time Time; Pop Noise Mute Time Constant Larger Mute Smaller Mute...
- Page 6 TDA7296 TYPICAL CHARACTERISTICS (Application Circuit of fig 2 unless otherwise specified) Figure 6. : Output Power vs. Supply Voltage. Figure 9. Distortion vs. Output Power Figure 7. Distortion vs. Output Power Figure 10. Distortion vs. Frequency Figure 8. Output Power vs. Supply Voltage Figure 11.
- Page 7 TDA7296 Figure 12. Quiescent Current vs. Supply Figure 15. St-by Attenuation vs. V pin9 Voltage Figure 13. Supply Voltage Rejection vs. Figure 16. Power Dissipation vs. Output Power Frequency Figure 14. Mute Attenuation vs. V Figure 17. Power Dissipation vs. Output Power...
- Page 8 The solution shown as a principle schematic by Fig 18 represents the DMOS unity-gain output buffer of the TDA7296. This large-signal, high-power buffer must be capable of handling extremely high current and voltage levels while maintaining acceptably low harmonic distortion and good behaviour over frequency response;...
- Page 9 The sequence that we recommend during the ON/OFF transients is shown by Figure 19. The application of figure 20 shows the possibility of using only one command for both st-by and mute func- tions. On both the pins, the maximum applicable range corresponds to the operating supply voltage.
- Page 10 D93AU014 BRIDGE APPLICATION Another application suggestion is the BRIDGE configuration, where two TDA7296 are used, as shown by the schematic diagram. In this application, the value of the load must not be lower than 8 Ohm for dissipation and current capability reasons.
- Page 11 TDA7296 Figure 22. Frequency Response of the Bridge Figure 24. Distortion vs. Output Power Application Figure 23. Distortion vs. Output Power 11/15...
- Page 12 TDA7296 Figure 25. Multiwatt15V Mechanical Data & Package Dimensions inch DIM. OUTLINE AND MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA 0.197 2.65 0.104 0.063 0.039 0.49 0.55 0.019 0.022 0.66 0.75 0.026 0.030 1.02 1.27 1.52 0.040 0.050 0.060 17.53...
- Page 13 TDA7296 Figure 26. Multiwatt15 Horizontal (Short leads) Mechanical Data & Package Dimensions inch DIM. OUTLINE AND MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA 0.197 2.65 0.104 0.063 0.49 0.55 0.019 0.022 0.66 0.75 0.026 0.030 1.02 1.27 1.52 0.040 0.050...
- Page 14 TDA7296 Table 5. Revision History Date Revision Description of Changes January 2004 First Issue in EDOCS DMS September 2004 Added Package Multiwatt15 Horizontal (Short leads) February 2005 Corrected mistyping error in Table 2. 14/15...
- Page 15 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 ©...
Need help?
Do you have a question about the TDA7296 and is the answer not in the manual?
Questions and answers