TDA7384A
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4 x 35W QUAD QUAD BRIDGE BRIDGE CAR RADIO AMPLIFIE AMPLIFIER R HIGH OUTP OUTPUT UT POWER CAPABI CAPABILITY LITY:: 4 x 40 40W/ W/4 4Ω MAX. 4 x 35 35W/ W/4 4Ω EIAJ 4 x 25 25W/ W/4 4Ω @ 14.4V 14.4V,, 1KH 1KHz, z, 10% 4 x 22 22W/ W/4 4Ω @ 13.2V 13.2V,, 1KH 1KHz, z, 10% LOW DISTO DISTORT RTION ION LOW OUT OUTPU PUT T NOI NOISE SE ST-BY FUNCTION MUTE FUNCT FUNCTION ION AUTOMUTE AT MIN. SUPPLY VOLTAGE DETECTION LOW EXTERN EXTERNAL AL COMPONE COMPONENT NT COUN COUNT: T: – INTERNALLY FIXED GAIN (26dB) – NO EXTERNAL COMPENSAT COMPENSATION ION – NO BOOTSTR BOOTSTRAP AP CAPACITORS CAPACITORS PROTECTIONS: OUTPUT SHORT CIRCU CIRCUIT TO GND, TO VS, ACROSS ACRO SS THE LOAD VERY INDUCTIV INDUCTIVE E LOADS OVERRATING OVERRAT ING CHIP TEMPERAT TEMPERATURE URE WITH SOFT THERMAL LIMITER LOAD DUMP VOLTAGE VOLTAGE
FLEXIWATT25 ORDERING NUMBER: TDA7384A NUMBER: TDA7384A
FORTUITOUS OPEN GND FORTUITOUS GND REVERSED REVER SED BATTE BATTERY RY ESD DESCRIPTION The TDA7384A TDA7384A is a new technolog technology y class class AB Audio Power Amplifier in Flexiwatt 25 package designed desig ned for high end car radio applica applications. tions. Thanks Tha nks to the ful fully ly com comple pleme menta ntary ry PNP PNP/NP /NPN N out out-put config configurati uration on the TDA7 TDA7384A 384A allow allows s a rail to rail output output voltage swing with no need of bootbootstrap capaci capacitors. tors. The extr extremely emely redu reduced ced compo compo-nents count allow allows s very compa compact ct sets.
BLOCK AND APPLICA APPLICATION TION DIAGRA DIAGRAM M Vcc1
Vcc2 470µF
100nF
ST-BY N.C.
MUTE
OUT1+ IN1
OUT10.1µF
PW-GND OUT2+
IN2
OUT20.1µF
PW-GND OUT3+
IN3
OUT30.1µF
PW-GND OUT4+
IN4
OUT40.1µF
PW-GND AC-GND 0.47µF
SVR
TAB
S-GND
47µF D99AU1018
October 1999
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TDA7384A
ABSOLUTE MAXIMUM RATINGS Symbol
Value
Unit
Operating Supply Voltage
18
V
VCC (DC)
DC Supply Voltage
28
V
VCC (pk)
Peak Supply Voltage (t = 50ms)
50
V
Output Peak Current: Repetitive (Duty Cycle 10% at f = 10Hz) Non Repetitive (t = 100µs)
4.5 5.5
A A
Power dissipation, (Tcase = 70°C)
80
W
T j
Junction Temperature
150
°C
Tstg
Storage Temperature
– 55 to 150
°C
VCC
IO
Ptot
Parameter
PIN CONNECTION (Topview)
1
25
- Y + C - 1 + B 2 2 R 1 2 D 4 3 2 C 1 D 1 N N N N A D T B - T V T N T V I I N I I T N U T S U G U U G O G - O S O - O S P P
D N G C A
+ 3 T U O
3 D N G P
+ E - 4 D 3 C C 4 T 4 D S T V T U T N H U U M U G O O O P D94AU159A
THERMAL DATA
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Symbol
Parameter
Rth j-case
Thermal Resistance Junction to Case
Max.
Value
Unit
1
°C/W
TDA7384A ELECTRICAL CHARACTERISTICS (VS = 14.4V; f = 1KHz; Rg = 600Ω; RL = 4Ω; Tamb = 25°C; Refer to the test and application diagram, unless otherwise specified.) Symbol Iq1 VOS dVOS
Parameter
Test Condition
Quiescent Current
RL = ∞
Output Offset Voltage
Play Mode
Min.
Typ.
Max.
Unit
120
190
350
mA
±80
mV
±80
mV
27
dB
±1
dB
During mute ON/OFF output offset voltage
Gv
Voltage Gain
25
26
dGv
Channel Gain Unbalance
Po
Output Power
VS = 13.2V; THD = 10% VS = 13.2V; THD = 0.8% VS = 14,4V; THD = 10%
20 15 24
22 17 26
W W W
Po EIAJ
EIAJ Output Power (*)
VS = 13.7V
32
35
W
Po max.
Output Power (*)
VS = 14.4V
38
40
W
THD
Distortion
Po = 4W
eNo
Output Noise
”A Weighted” Bw = 20Hz to 20KHz
SVR
Supply Voltage Rejection
f = 100Hz; Vr = 1Vrms
50
65
dB
fch
High Cut-Off Frequency
PO = 0.5W
100
200
KHz
Ri
Input Impedance
70
100
KΩ
CT
Cross Talk
f = 1KHz PO = 4W f = 10KHz PO = 4W
60 50
70 60
ISB
St-By Current Consumption
Ipin4
0.04
0.15
%
50 70
70 100
µV µV
– –
dB dB
VSt-By = 1.5V
100
µA
St-by pin Current
VSt-By = 1.5V to 3.5V
±10
µA
VSB out
St-By Out Threshold Voltage
(Amp: ON)
VSB in
St-By in Threshold Voltage
(Amp: OFF)
Mute Attenuation
POref = 4W
80
VM out
Mute Out Threshold Voltage
(Amp: Play)
3.5
VM in
Mute In Threshold Voltage
(Amp: Mute)
VAM in
VS Automute Threshold
(Amp: Mute) Att ≥ 80dB; POref = 4W (Amp: Play) Att < 0.1dB; PO = 0.5W
AM
Ipin22
Muting Pin Current
VMUTE = 1.5V (Sourced Current)
3.5
V 1.5
5
90
V dB V
1.5
V
6.5
V
7.6
8.5
V
11
20
µA
(*) Saturated square wave output.
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TDA7384A Figure 1: Standard Test and Application Circuit
C8
C7
0.1µF
2200µF Vcc1-2
Vcc3-4 6
R1 ST-BY
20
4 10K R2
9
C9
8
1µF
MUTE
7
22 47K
C10
1µF
5
C1 IN1
2
11
IN2
12
17
C2 0.1µF
18
IN3
OUT3
19
15 C3 0.1µF
21
IN4
14 S-GND
24
OUT4
23
13 16
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OUT2
3
0.1µF
C4 0.1µF
OUT1
10 SVR
C5
C6
0.47µF
47µ F
25 HSD
1 TAB D95AU335B
TDA7384A 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 3: QuiescentCurrent vs. Supply Voltage
Figure 5: Output Power vs. Supply Voltage
Figure 7: Distortion vs. Frequency
VS =14.4V RL = 4Ω PO = 1W
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Figure 4: Quiescent Output Voltage vs. Supply Voltage
Figure 6: Distortion vs. Output Power
Figure 8: Supply Voltage Rejection vs. Frequency.
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.
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 70KΩ, 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.
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
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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
22.07 18.57 15.50 7.70 3.70 3.60
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
MIN. 0.175 0.070
1.05 0.42 0.57 1.20 24.25 29.30
0.029 0.014 0.031 0.935 1.138
22.87 19.37 15.90 7.95
0.869 0.731 0.610 0.303
4.30 4.40
0.145 0.142
inch TYP. MAX. 0.177 0 .183 0.074 0 .079 0.055 0.035 0.041 0.015 0 .016 0.022 0.040 0.047 0.945 0.955 1.150 1.153 0.669 0.503 0.031 0.884 0.904 0.747 0.762 0.618 0.626 0 .309 0.313 0.197 0.138 0.157 0.169 0 .157 0.173 0.086 0.079 0.067 0.02 0.12 0.049 0.019
OUTLINE AND MECHANICAL DATA
5° (Typ.) 3° (Typ.) 20° (Typ.) 45° (Typ.)
Flexiwatt25
(1): dam-bar protusion not included (2): molding protusion included
H H1
V3
A
H2
H3 O
R3 R4
4 L
N
2 L
V1 R2 R
3 L
L
L1
V1
V2
R2
D
R1 L5
R1
R1 E
V
G
G1
F
M B
C
V FLEX25ME
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M1
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 � 1999 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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