tda7375a STMicroelectronics, tda7375a Datasheet

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tda7375a

Manufacturer Part Number
tda7375a
Description
2 X 37w Dual/quad Power Amplifier For Car Radio
Manufacturer
STMicroelectronics
Datasheet

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TDA7375A
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TDA7375A
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Part Number:
tda7375aH
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tda7375aV
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Protections:
BLOCK DIAGRAM
October 1998
2
2
2
4
4
COUNT:
– NO BOOTSTRAP CAPACITORS
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN (26dB BTL)
TIONS
– CLIP DETECTOR
– OUT TO GND SHORT
– OUT TO V
– SOFT SHORT AT TURN-ON
– THERMAL SHUTDOWN PROXIMITY
– TO GND
HIGH OUTPUT POWER CAPABILITY
MINIMUM
ST-BY FUNCTION (CMOS COMPATIBLE)
NO AUDIBLE POP DURING ST-BY OPERA-
DIAGNOSTIC FACILITIES
OUPUT AC/DC SHORT CIRCUIT
2 x 37W DUAL/QUAD POWER AMPLIFIER FOR CAR RADIO
x
x
x
x
x
37W/4 EIAJ
7W/4 @14.4V, 1KHz, 10%
12W/2 @14.4V, 1KHz, 10%
43W/4 MAX
26W/4 @14.4V, 1KHz, 10%
S
SHORT
EXTERNAL
COMPONENTS
– TO V
– ACROSS THE LOAD
SOFT SHORT AT TURN-ON
OVERRATING CHIP TEMPERATURE WITH
SOFT THERMAL LIMITER
LOAD DUMP VOLTAGE SURGE
VERY INDUCTIVE LOADS
FORTUITOUS OPEN GND
REVERSED BATTERY
ESD
ORDERING NUMBERS: TDA7375AV
S
Multiwatt15 V
TDA7375A
TDA7375AH
1/14

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tda7375a Summary of contents

Page 1

... SOFT SHORT AT TURN-ON – THERMAL SHUTDOWN PROXIMITY Protections: OUPUT AC/DC SHORT CIRCUIT – TO GND BLOCK DIAGRAM October 1998 TDA7375A Multiwatt15 V ORDERING NUMBERS: TDA7375AV TDA7375AH – – ACROSS THE LOAD SOFT SHORT AT TURN-ON OVERRATING CHIP TEMPERATURE WITH SOFT THERMAL LIMITER LOAD DUMP VOLTAGE SURGE ...

Page 2

... TDA7375A DESCRIPTION The TDA7375A is a new technology class AB car radio amplifier able to work either in DUAL BRIDGE or QUAD SINGLE ENDED configuration. The exclusive fully complementary structure of the output stage and the internally fixed gain guaran- ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Operating Supply Voltage ...

Page 3

... Inverting Channels Bridge 22Hz to 22KHz 300Hz 1.5V ST-BY 3.5 Play Mode pin7 Max Driving Current Under Fault (*) (**) (**) 160 Sink Current at Pin 10 = 1mA TDA7375A Max. Unit 18 V 150 mA 150 0 ...

Page 4

... TDA7375A STANDARD TEST AND APPLICATION CIRCUIT Figure 1: Quad Stereo 10K R1 ST Note: The output decoupling capacitors C3 0.22 F (C9,C10,C11,C12) could be reducedto 1000 operation is not required Figure 2: Double Bridge 10K R1 ST- 0. 0.47 F ...

Page 5

... Figure 4: P.C. Board and Component Layout of the fig.1 (1:1 scale). Figure 5: P.C. Board and Component Layout of the fig.2 (1:1 scale). TDA7375A 5/14 ...

Page 6

... TDA7375A Figure 6: Quiescent Drain Current vs. Supply Voltage (Single Ended and Bridge). Figure 8: Output Power vs. Supply Voltage Figure 10: Output Power vs. Supply Voltage 6/14 Figure 7: Quiescent Output Voltage vs. Supply Voltage (Single Ended and Bridge). Figure 9: Output Power vs. Supply Voltage Figure 11: Distortion vs. Output Power ...

Page 7

... Figure 12: Distortion vs. Output Power Figure 14: Cross-talk vs. Frequency Figure 16: SupplyVoltage Rejection vs. Frequency TDA7375A Figure 13: Distortion vs. Output Power Figure 15: Supply Voltage Rejection vs. Fre- quency Figure 17: Stand-byAttenuation vs. Threshold Voltage 7/14 ...

Page 8

... TDA7375A Figure 18: Total Power Dissipation and Effi- ciency vs. Output Power 8/14 Figure 19: Total Power Dissipation and Effi- ciency vs. Output Power. ...

Page 9

... The clear advantages this new approach has over classical output stages are as follows: Rail-to-Rail Output Voltage Swing With No TDA7375A Need of Bootstrap Capacitors. The output swing is limited only by the VCEsat of the output transistors, which are in the range of 0 each ...

Page 10

... Thermal Shutdown In this case the output 10 will signal the proximity of the junction temperature to the shutdown threshold. Typically current sinking at pin 10 will start ~10 C before the shutdown threshold is reached. HANDLING OF THE DIAGNOSTIC INFORMA- Figure 23: Output Fault Waveforms (see fig. 24) for any out TDA7375A ...

Page 11

... This could be done taking into account the differ- ent timing of the diagnostic output against differ- ent events. Normally the clip detector signalling produces a low level at out 10 that is shorter referred to every CLIPPING SHORT TO GND TDA7375A THERMAL PROXIMITY ...

Page 12

... TDA7375A kind of fault detection; based on this assumption an interface circuitry to differentiate the informa- tion is represented in the following schematic. Figure 26. TDA7375A 12/14 ...

Page 13

... L2 17.65 18.1 0.695 L3 17.25 17.5 17.75 0.679 0.689 L4 10.3 10.7 10.9 0.406 0.421 L7 2.65 2.9 0.104 M 4.25 4.55 4.85 0.167 0.179 M1 4.63 5.08 5.53 0.182 0.200 S 1.9 2.6 0.075 S1 1.9 2.6 0.075 Dia1 3.65 3.85 0.144 OUTLINE AND MAX. MECHANICAL DATA 0.197 0.104 0.063 0.022 0.030 0.060 0.710 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.218 0.102 Multiwatt15 V 0.102 0.152 TDA7375A 13/14 ...

Page 14

... TDA7375A 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. Specification mentioned in this publication are subject to change without notice ...

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