tda7375

Manufacturer Part Numbertda7375
Description2 X 35w Dual/quad Power Amplifier For Car Radio
ManufacturerSTMicroelectronics
tda7375 datasheet
 
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2 x 35W DUAL/QUAD POWER AMPLIFIER FOR CAR RADIO
HIGH OUTPUT POWER CAPABILITY:
2 x 40W max./4
2 x 35W/4 EIAJ
2 x 35W/4 EIAJ
2
25W/4 @14.4V, 1KHz, 10%
x
4
7W/4 @14.4V, 1KHz, 10%
x
4
12W/2 @14.4V, 1KHz, 10%
x
MINIMUM
EXTERNAL
COMPONENTS
COUNT:
– NO BOOTSTRAP CAPACITORS
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN (26dB BTL)
ST-BY FUNCTION (CMOS COMPATIBLE)
NOAUDIBLE POPDURING ST-BYOPERATIONS
DIAGNOSTICS FACILITY FOR:
– CLIPPING
– OUT TO GND SHORT
– OUT TO V
SHORT
S
– SOFT SHORT AT TURN-ON
– THERMAL SHUTDOWN PROXIMITY
Protections:
OUPUT AC/DC SHORT CIRCUIT
BLOCK DIAGRAM
September 1998
TDA7375
MULTIWATT15V
MULTIWATT15H
ORDERING NUMBERS:
TDA7375V
TDA7375H
– TO GND
– TO V
S
– 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
DIAGNOSTICS
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tda7375 Summary of contents

  • Page 1

    ... THERMAL SHUTDOWN PROXIMITY Protections: OUPUT AC/DC SHORT CIRCUIT BLOCK DIAGRAM September 1998 TDA7375 MULTIWATT15V MULTIWATT15H ORDERING NUMBERS: TDA7375V TDA7375H – TO GND – – ACROSS THE LOAD SOFT SHORT AT TURN-ON OVERRATING CHIP TEMPERATURE WITH SOFT THERMAL LIMITER LOAD DUMP VOLTAGE SURGE VERY INDUCTIVE LOADS ...

  • Page 2

    ... TDA7375 DESCRIPTION The TDA7375 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 TDA7375 Max. Unit 18 V 150 mA 150 0 ...

  • Page 4

    ... TDA7375 STANDARD TEST AND APPLICATION CIRCUIT Figure 1: Quad Stereo 10K R1 ST Note: C3 0.22 F C9, C10, C11, C12 could be reduced if the 2 operation is not required Figure 2: Double Bridge 10K R1 ST Figure 3: Stereo/Bridge ...

  • 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). TDA7375 5/15 ...

  • Page 6

    ... TDA7375 Figure 6: Quiescent Drain Current vs. Supply Voltage (Single Ended and Bridge Figure 8: Output Power vs. Supply Voltage S. 1KHz Figure 10: Output Power vs. Supply Voltage BTL 1KHz 6/15 Figure 7: Quiescent Output Voltage vs. Supply Voltage (Single Ended and Bridge). ...

  • Page 7

    ... Figure 16: SupplyVoltage Rejection vs. Frequency S. SVR V = 1Vrms ripple Figure 13: Distortion vs. Output Power f = 15KHz f = 1KHz BTL V = 14. Figure 15: Supply Voltage Rejection vs. Fre- quency BTL SVR V = 1Vrms ripple Figure 17: Stand-byAttenuation vs. Threshold Voltage BTL & S. 14. TDA7375 7/15 ...

  • Page 8

    ... TDA7375 Figure 18: Total Power Dissipation and Effi- ciency vs. Output Power P tot S. 14. 1KHz 8/15 Figure 19: Total Power Dissipation and Effi- ciency vs. Output Power. P tot BTL V = 14. 1KHz ...

  • Page 9

    ... In contrast, with the classical PNP-NPN stage, the solution adopted for reducing the gain at high frequencies makes use of external RC networks, namely the Boucherot cells. BUILT–IN SHORT CIRCUIT PROTECTION Figure 20: The New Output Stage TDA7375 9/15 ...

  • Page 10

    ... Supposing that the output capacitor C reason is shorted, the loudspeaker will not be damaged being this soft short circuit condition re- vealed. Diagnostics Facility The TDA7375 is equipped with a diagnostic cir- cuitry able to detect the following events: Clipping in the output signal Thermal shutdown Output fault: – ...

  • Page 11

    ... SOFT SHORT OUT TO GND SHORT FAULT DETECTION SHORT TO GND D94AU149A order to discriminate each event. This could be done by taking into account the dif- ferent timing of the diagnostic output during each case. CLIPPING SHORT TO GND TDA7375 THERMAL PROXIMITY 11/15 ...

  • Page 12

    ... TDA7375 Normally the clip detector signalling produces a low level at pin 10 that is shorter than that present under faulty conditions; based on this assumption Figure 26. TDA7375 PCB-LAYOUT GROUNDING (general rules) The device has 2 distinct ground leads, P-GND (POWER GROUND) and S-GND (SIGNAL GROUND) which are practically disconnected from each other at chip level ...

  • 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 TDA7375 13/15 ...

  • Page 14

    ... TDA7375 mm inch DIM. MIN. TYP. MAX. MIN. TYP 2.65 C 1.6 E 0.49 0.55 0.019 F 0.66 0.75 0.026 G 1.14 1.27 1.4 0.045 0.050 G1 17.57 17.78 17.91 0.692 0.700 H1 19.6 0.772 H2 20.2 L 20.57 0.810 L1 18.03 0.710 L2 2.54 0.100 L3 17.25 17.5 17.75 0.679 0.689 L4 10.3 10.7 10.9 0.406 0.421 L5 5.28 0.208 L6 2.38 0.094 L7 2.65 2.9 0.104 S 1.9 2.6 0.075 S1 1.9 2.6 0.075 Dia1 3.65 3.85 0.144 14/15 OUTLINE AND MAX. MECHANICAL DATA 0.197 0.104 0.063 0.022 ...

  • Page 15

    ... MULTIWATT is a Registered Trademark of the STMicroelectronics 1998 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com TDA7375 15/15 ...