TDA7295V ST Microelectronics, TDA7295V Datasheet

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TDA7295V

Manufacturer Part Number
TDA7295V
Description
80V - 80W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
Manufacturer
ST Microelectronics
Datasheet

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DESCRIPTION
The TDA7295 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, Top-
class TV). Thanks to the wide voltage range and
Figure 1: Typical Application and Test Circuit
July 1999
( 40V)
POWER)
VERY HIGH OPERATING VOLTAGE RANGE
DMOS POWER STAGE
HIGH OUTPUT POWER (UP TO 80W MUSIC
MUTING/STAND-BY FUNCTIONS
NO SWITCH ON/OFF NOISE
NO BOUCHEROT CELLS
VERY LOW DISTORTION
VERY LOW NOISE
SHORT CIRCUIT PROTECTION
THERMAL SHUTDOWN
VSTBY
VM
80V - 80W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
22 F
C2
R1 22K
C3 10 F
R4 22K
C1 470nF
R5 10K
680
R2
IN+MUTE
MUTE
STBY
IN+
IN-
C4 10 F
R3 22K
2
3
4
10
9
MUTE
STBY
1
STBY-GND
C7 100nF
-
+
to the high out current capability it is able to sup-
ply the highest power into both 4
even in presence of poor supply regulation, with
high Supply Voltage Rejection.
The built in muting function with turn on delay
simplifies the remote operation avoiding switching
on-off noises.
+Vs
7
8
-Vs
C9 100nF
SHUTDOWN
THERMAL
MULTIPOWER BCD TECHNOLOGY
ORDERING NUMBER: TDA7295V
-Vs
+Vs
15
-PWVs
PROTECTION
Multiwatt 15
+PWVs
13
S/C
C6 1000 F
C8 1000 F
14
TDA7295
6
22 F
OUT
BOOTSTRAP
C5
and 8
D93AU011
loads
1/13

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TDA7295V Summary of contents

Page 1

... July 1999 MULTIPOWER BCD TECHNOLOGY Multiwatt 15 ORDERING NUMBER: TDA7295V to the high out current capability it is able to sup- ply the highest power into both 4 even in presence of poor supply regulation, with high Supply Voltage Rejection. The built in muting function with turn on delay simplifies the remote operation avoiding switching on-off noises ...

Page 2

TDA7295 PIN CONNECTION (Top view) BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage S I Output Peak Current O P Power Dissipation tot case T Operating Ambient Temperature Range Storage and ...

Page 3

THERMAL DATA Symbol R Thermal Resistance Junction-case th j-case ELECTRICAL CHARACTERISTICS (Refer to the Test Circuit kHz; unless otherwise specified. g amb Symbol Parameter V Operating Supply Range ...

Page 4

TDA7295 Figure 2: P.C.B. and components layout of the circuit of figure 1. (1:1 scale) 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 ...

Page 5

APPLICATION SUGGESTIONS (see Test and Application Circuits of the Fig. 1) The recommended values of the external components are those shown on the application circuit of Fig- ure 1. Different values can be used; the following table can help the ...

Page 6

TDA7295 TYPICAL CHARACTERISTICS (Application Circuit of fig 1 unless otherwise specified) Figure 3: Output Power vs. Supply Voltage. Figure 5: Output Power vs. Supply Voltage Figure 7: Distortion vs. Frequency 6/13 Figure 4: Distortion vs. Output Power Figure 6: Distortion ...

Page 7

TYPICAL CHARACTERISTICS (continued) Figure 9: Quiescent Current vs. Supply Voltage Figure 11: Mute Attenuation vs. V pin10 Figure 13: Power Dissipation vs. Output Power Figure10: SupplyVoltage Rejection vs. Frequency Figure 12: St-by Attenuation vs. V pin9 Figure 14: Power Dissipation ...

Page 8

TDA7295 INTRODUCTION In consumer electronics, an increasing demand has arisen for very high power monolithic audio amplifiers able to match, with a low cost the per- formance obtained from the best discrete de- signs. The task of realizing this linear ...

Page 9

Figure 16: Turn ON/OFF Suggested Sequence +Vs (V) +35 -35 - (mV) V ST-BY 5V PIN #9 (V) V MUTE 5V PIN #10 ( (mA) V OUT (V) OFF ST-BY In addition to the overload protection ...

Page 10

TDA7295 BRIDGE APPLICATION Another application suggestion is the BRIDGE configuration, where two TDA7295 are used, as shown by the schematic diagram of figure 25. In this application, the value of the load must not be lower than 8 Ohm for ...

Page 11

Figure 19: Frequency Response of the Bridge Application Figure 21: Distortion vs. Output Power Figure 20: Distortion vs. Output Power TDA7295 11/13 ...

Page 12

TDA7295 mm DIM. MIN. TYP. MAX. MIN 2. 0.49 0.55 0.019 F 0.66 0.75 0.026 G 1.02 1.27 1.52 0.040 0.050 G1 17.53 17.78 18.03 0.690 0.700 H1 19.6 0.772 H2 20.2 ...

Page 13

Informationfurnishedisbelievedtobeaccurateandreliable.However,STMicroelectroni csassumesnoresponsibilityfortheconsequences of use of such informationnor for any infringementof patentsor otherrights of third parties which may result from its use. No license is grantedbyimplicationorotherwiseunderanypatentorpatent rightsof STMicroelectronics.Specificationmentionedinthispublicationare subjecttochangewithoutnotice.Thi spublicationsupersedesandreplacesallinformati on previously supplied. S TMicroelectronics products arenotauthorizedforuseascriticalcomponentsinlifesupportdevicesorsystemswithoutexpresswrittenapproval o fSTMicroelectronics. TheSTlogoisaregisteredtrademarkofSTMicroelectronics 1999 ...

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