tda7296a STMicroelectronics, tda7296a Datasheet

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tda7296a

Manufacturer Part Number
tda7296a
Description
70v - 60w Dmos Audio Amplifier With Mute/st-by
Manufacturer
STMicroelectronics
Datasheet
DESCRIPTION
The TDA7296A 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
to the high out current capability it is able to sup-
ply the highest power into both 4
Figure 1: Typical Application and Test Circuit
June 1996
This is preliminary information on a new product now in development. Details are subject to change without notice.
( 35V)
POWER)
VERY HIGH OPERATING VOLTAGE RANGE
DMOS POWER STAGE
HIGH OUTPUT POWER (UP TO 60W MUSIC
MUTING/STAND-BY FUNCTIONS
NO SWITCH ON/OFF NOISE
NO BOUCHEROT CELLS
VERY LOW DISTORTION
VERY LOW NOISE
SHORT CIRCUIT PROTECTION
THERMAL SHUTDOWN
CLIPPING DETECTION OUTPUT
VSTBY
VM
70V - 60W 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
and 8
MUTE
STBY
1
STBY-GND
loads
C7 100nF
-
+
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.
The device provides a circuit for the detection of
clipping in the output stages. The output, on open
collector, is able to drive system with automatic
level control.
+Vs
7
8
-Vs
C9 100nF
SHUTDOWN
THERMAL
MULTIPOWER BCD TECHNOLOGY
ORDERING NUMBER: TDA7296AV
-Vs
+Vs
15
-PWVs
PROTECTION
+PWVs
13
S/C
Multiwatt 15
C6 1000 F
C8 1000 F
CD
TDA7296A
14
6
5
PRODUCT PREVIEW
D96AU494
22 F
OUT
BOOTSTRAP
C5
+5V
1/13

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tda7296a Summary of contents

Page 1

... VERY LOW NOISE SHORT CIRCUIT PROTECTION THERMAL SHUTDOWN CLIPPING DETECTION OUTPUT DESCRIPTION The TDA7296A 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 ...

Page 2

... TDA7296A PIN CONNECTION (Top view) BLOCK DIAGRAM IN+ IN- BIPOLAR MOS GAIN & TRANSCONDUCTANCE LEVEL SHIFTING INPUT STAGE STAGE ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage S I Output Peak Current O P Power Dissipation tot case T Operating Ambient Temperature Range Storage and Junction Temperature ...

Page 3

... 18V 5W 1kHz 0.1 to 20W 20Hz to 20kHz curve f = 20Hz to 20kHz 100 f = 100Hz 0.5Vrms 60 ripple 3.5 70 3.5 60 THD = 1% THD = 10% TDA7296A Value Unit 1.5 C/W = 30dB; V Typ. Max. Unit 500 nA +10 mV +100 ...

Page 4

... TDA7296A Figure 2: P.C.B. and components layout of the circuit of figure 1. (1:1 scale) TDA7296A 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. 4/13 ...

Page 5

... MUTE TIME LARGER MUTE CONSTANT ON/OFF TIME ST-BY TIME LARGER ST-BY CONSTANT ON/OFF TIME BOOTSTRAPPING SUPPLY VOLTAGE BYPASS SUPPLY VOLTAGE BYPASS TDA7296A SMALLER THAN SUGGESTED DECREASE INPUT IMPEDANCE SMALLER ST-BY ON/OFF TIME; POP NOISE SMALLER MUTE ON/OFF TIME HIGHER LOW FREQUENCY CUTOFF HIGHER LOW ...

Page 6

... TDA7296A 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 vs. Output Power Figure 8: Distortion vs. Frequency ...

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 TDA7296A Figure10: SupplyVoltage Rejection vs. Frequency Figure 12: St-by Attenuation vs. V pin9 Figure 14: Power Dissipation vs. Output Power 7/13 ...

Page 8

... The solution shown as a principle schematic by Fig 15 represents the DMOS unity-gain output buffer of the TDA7296A. This large-signal, high-power buffer must be ca- pable of handling extremely high current and volt- age levels while maintaining acceptably low har- Figure 15: Principle Schematic of a DMOS unity-gain buffer ...

Page 9

... The sequence that we recommend during the ON/OFF transients is shown by Figure 16. The application of figure 17 shows the possibility using only one command for both st-by and mute functions. On both the pins, the maximum D93AU014 applicable range corresponds to the operating supply voltage. TDA7296A 9/13 ...

Page 10

... TDA7296A 4) Clipping Detector Output The TDA7296A is equipped with an internal cir- cuit able to detect the output stage saturation pro- viding a proper current sinking into on open col- lector output (pin 5) when a certain distortion level is reached at output. This particular function allows gain compression facility whenever the amplifier is overdriven, thus obtaining high quality sound all listening levels ...

Page 11

... Figure 20: Frequency Response of the Bridge Application Figure 22: Distortion vs. Output Power TDA7296A Figure 21: Distortion vs. Output Power 11/13 ...

Page 12

... TDA7296A MULTIWATT15 PACKAGE MECHANICAL DATA mm DIM. MIN. TYP 0.49 F 0.66 G 1.14 1.27 G1 17.57 17. 17.65 L3 17.25 17.5 L4 10.3 10.7 L7 2.65 M 4.2 4.3 M1 4.5 5.08 S 1.9 S1 1.9 Dia1 3.65 12/13 inch MAX. MIN. TYP. 5 2.65 1.6 0.039 0.55 0.019 0.75 0.026 1.4 0.045 0.050 17.91 0.692 0.700 0.772 20.2 22.6 0.870 22.5 0.866 18.1 0.695 17.75 0.679 0.689 10.9 0.406 0.421 2.9 0.104 4.6 0.165 ...

Page 13

... SGS-THOMSON Microelectronics. 1996 SGS-THOMSON Microelectronics – Printed in Italy – All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. TDA7296A 13/13 ...

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