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TDA7384A
4 x 35W QUAD BRIDGE CAR RADIO AMPLIFIER
HIGH OUTPUT POWER CAPABILITY: 4 x 40W/4 MAX. 4 x 35W/4 EIAJ 4 x 25W/4 @ 14.4V, 1KHz, 10% 4 x 22W/4 @ 13.2V, 1KHz, 10% LOW DISTORTION LOW OUTPUT NOISE ST-BY FUNCTION MUTE FUNCTION AUTOMUTE AT MIN. SUPPLY VOLTAGE DETECTION LOW EXTERNAL COMPONENT COUNT: INTERNALLY FIXED GAIN (26dB) NO EXTERNAL COMPENSATION NO BOOTSTRAP CAPACITORS PROTECTIONS: OUTPUT SHORT CIRCUIT TO GND, TO VS, ACROSS THE LOAD VERY INDUCTIVE LOADS OVERRATING CHIP TEMPERATURE WITH SOFT THERMAL LIMITER LOAD DUMP VOLTAGE BLOCK AND APPLICATION DIAGRAM
Vcc1 Vcc2
FLEXIWATT25 ORDERING NUMBER: TDA7384A
FORTUITOUS OPEN GND REVERSED BATTERY ESD DESCRIPTION The TDA7384A is a new technology class AB Audio Power Amplifier in Flexiwatt 25 package designed for high end car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7384A allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced components count allows very compact sets.
470µF ST-BY N.C. OUT1+ IN1 0.1µF OUT1PW-GND OUT2+ IN2 0.1µF OUT2PW-GND OUT3+ IN3 0.1µF OUT3PW-GND OUT4+ IN4 0.1µF AC-GND 0.47µF SVR 47µF
D99AU1018
100nF
MUTE
OUT4PW-GND TAB S-GND
March 2001
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TDA7384A
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VCC (DC) VCC (pk) IO Operating Supply Voltage DC Supply Voltage Peak Supply Voltage (t = 50ms) Output Peak Current: Repetitive (Duty Cycle 10% at f = 10Hz) Non Repetitive (t = 100µs) Power dissipation, (Tcase = 70°C) Junction Temperature Storage Temperature Parameter Value 18 28 50 4.5 5.5 80 150 55 to 150 Unit V V V A A W °C °C
Ptot Tj Tstg
PIN CONNECTION (Top view)
1
25
P-GND1
OUT1+
IN1
IN2
IN4
IN3
OUT3+
AC-GND
P-GND3
OUT1-
SVR
S-GND
P-GND2
OUT2-
OUT2+
OUT3-
ST-BY
OUT4+
P-GND4
MUTE
OUT4-
D94AU159A
THERMAL DATA
Symbol Rth j-case Parameter Thermal Resistance Junction to Case Max. Value 1 Unit °C/W
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HSD
TAB
VCC
VCC
TDA7384A
ELECTRICAL CHARACTERISTICS (VS = 14.4V; f = 1KHz; Rg = 600; RL = 4; Tamb = 25°C; Refer to the test and application diagram, unless otherwise specified.)
Symbol Iq1 VOS dVOS Gv dGv Po Parameter Quiescent Current Output Offset Voltage During mute ON/OFF output offset voltage Voltage Gain Channel Gain Unbalance Output Power VS = 13.2V; THD = 10% VS = 13.2V; THD = 0.8% VS = 14,4V; THD = 10% VS = 13.7V VS = 14.4V Po = 4W "A Weighted" Bw = 20Hz to 20KHz f = 100Hz; Vr = 1Vrms PO = 0.5W f = 1KHz PO = 4W f = 10KHz PO = 4W VSt-By = 1.5V VSt-By = 1.5V to 3.5V (Amp: ON) (Amp: OFF) POref = 4W (Amp: Play) (Amp: Mute) (Amp: Mute) Att 80dB; POref = 4W (Amp: Play) Att < 0.1dB; PO = 0.5W VMUTE = 1.5V (Sourced Current) 80 3.5 1.5 6.5 7.6 11 8.5 20 90 50 100 70 60 50 Test Condition RL = Play Mode Min. 120 Typ. 190 Max. 350 ±80 ±80 25 20 15 24 32 38 26 22 17 26 35 40 0.04 50 70 65 200 100 70 60 50 ±10 1.5 0.15 70 100 27 ±1 Unit mA mV mV dB dB W W W W W % µV µV dB KHz K dB dB µA µA V V dB V V V V µA
Po EIAJ Po max. THD eNo SVR fch Ri CT ISB Ipin4 VSB out VSB in AM VM out VM in VAM in
EIAJ Output Power (*) Output Power (*) Distortion Output Noise Supply Voltage Rejection High Cut-Off Frequency Input Impedance Cross Talk St-By Current Consumption St-by pin Current St-By Out Threshold Voltage St-By in Threshold Voltage Mute Attenuation Mute Out Threshold Voltage Mute In Threshold Voltage VS Automute Threshold
3.5
Ipin22
Muting Pin Current
5
(*) Saturated square wave output.
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TDA7384A
Figure 1: Standard Test and Application Circuit
C8 0.1µF
C7 2200µF Vcc1-2 Vcc3-4 6 20 9 8 OUT1
R1 ST-BY 10K R2 MUTE 47K C1 IN1 0.1µF IN2 C2 0.1µF IN3 C3 0.1µF IN4 C4 0.1µF S-GND 14 13 16 C5 0.47µF SVR C6 47µF 10 15 12 11 C10 1µF C9 1µF 22 4
7
5 2 3 OUT2
17 18 19 OUT3
21 24 23 25 HSD 1 TAB
D95AU335B
OUT4
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Figure 2: P.C.B. and component layout of the figure 1 (1:1 scale) COMPONENTS & TOP COPPER LAYER
BOTTOM COPPER LAYER
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TDA7384A
Figure 4: Quiescent Output Voltage vs. Supply Voltage
Figure 3: Quiescent Current vs. Supply Voltage
Figure 5: Output Power vs. Supply Voltage
Figure 6: Distortion vs. Output Power
Figure 7: Distortion vs. Frequency
Figure 8: Supply Voltage Rejection vs. Frequency.
VS =14.4V RL = 4 PO = 1W
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TDA7384A
Figure 9: Output Noise vs. Source Resistance
Figure 10: Power Dissipation & Efficiency vs. Output Power
APPLICATION HINTS (ref. to the circuit of fig. 1) SVR Besides its contribution to the ripple rejection, the SVR capacitor governs the turn ON/OFF time sequence and, consequently, plays an essential role in the pop optimization during ON/OFF transients. To conveniently serve both needs, ITS MINIMUM RECOMMENDED VALUE IS 10µF. INPUT STAGE The TDA7384A'S inputs are ground-compatible and can stand very high input signals (± 8Vpk) without any performances degradation. If the standard value for the input capacitors (0.1µF) is adopted, the low frequency cut-off will amount to 16 Hz. STAND-BY AND MUTING STAND-BY and MUTING facilities are both
CMOS-COMPATIBLE. If unused, a straight connection to Vs of their respective pins would be admissible. Conventional/low-power transistors can be employed to drive muting and stand-by pins in absence of true CMOS ports or microprocessors. R-C cells have always to be used in order to smooth down the transitions for preventing any audible transient noises. Since a DC current of about 10 uA normally flows out of pin 22, the maximum allowable muting-series resistance (R2) is 70K, which is sufficiently high to permit a muting capacitor reasonably small (about 1µF). If R2 is higher than recommended, the involved risk will be that the voltage at pin 22 may rise to above the 1.5 V threshold voltage and the device will consequently fail to turn OFF when the mute line is brought down. About the stand-by, the time constant to be assigned in order to obtain a virtually pop-free transition has to be slower than 2.5V/ms.
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TDA7384A
DIM. A B C D E F (1) G G1 H (2) H1 H2 H3 L (2) L1 L2 (2) L3 L4 L5 M M1 N O R R1 R2 R3 R4 V V1 V2 V3 MIN. 4.45 1.80 0.75 0.37 0.80 23.75 28.90 mm TYP. 4.50 1.90 1.40 0.90 0.39 1.00 24.00 29.23 17.00 12.80 0.80 22.47 18.97 15.70 7.85 5 3.5 4.00 4.00 2.20 2 1.70 0.5 0.3 1.25 0.50 MAX. 4.65 2.00 1.05 0.42 0.57 1.20 24.25 29.30 MIN. 0.175 0.070 0.029 0.014 0.031 0.935 1.138 inch TYP. 0.177 0.074 0.055 0.035 0.015 0.040 0.945 1.150 0.669 0.503 0.031 0.884 0.747 0.618 0.309 0.197 0.138 0.157 0.157 0.086 0.079 0.067 0.02 0.12 0.049 0.019 MAX. 0.183 0.079 0.041 0.016 0.022 0.047 0.955 1.153
OUTLINE AND MECHANICAL DATA
22.07 18.57 15.50 7.70
22.87 19.37 15.90 7.95
0.869 0.731 0.610 0.303
0.904 0.762 0.626 0.313
3.70 3.60
4.30 4.40
0.145 0.142
0.169 0.173
5° (Typ.) 3° (Typ.) 20° (Typ.) 45° (Typ.)
Flexiwatt25
(1): dam-bar protusion not included (2): molding protusion included
V3 H3
H H1 H2 R3 R4 V1 R2 R L L1 A
L4
O
L2
N
L3
V1
V2
R2 L5 G V B C V
FLEX25ME
R1 R1 R1 E
D
G1
F M M1
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TDA7384A
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. 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 © 2001 STMicroelectronics Printed in Italy All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com
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