STMicroelectronics TDA2004A Schematic [ru]
10 + 10W STEREO AMPLIFIER FOR CAR RADIO
Its main featuresare :
Low distortion.
Low noise.
High reliabilityofthe chipand of thepackagewith
additionalsafetyduringoperationthanksto protections against:
.OUTPUTAC SHORTCIRCUIT TO GROUND
.VERYINDUCTIVE LOADS
.OVERRATINGCHIP TEMPERATURE
.LOADDUMP VOLTAGESURGE
.FORTUITOUS OPENGROUND
Spaceandcostsaving:verylownumberofexternalcomponents,verysimple mounting systemwith
noelectricalisolation betweenthe packageand the
heatsink.
DESCRIPTION
The TDA2004Ais a classB dual audio power amplifier in MULTIWATT
package specifically desi-
TDA2004A
MULTIWATT11
ORDERING NUMBER :TDA2004A
gnedforcarradioapplications;stereoamplifiersare
easily designed using this device that provides a
highcurrent capability(upto3.5A) andthatcandrive verylow impedanceloads(downto 1.6Ω ).
PIN CONNE CTIO N (top view)
March 1995
1/10
TD A200 4A
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
OpeartingSupply Voltage 18 V
V
S
DC SupplyVoltage 28 V
V
S
Peak Supply Voltage (for 50ms) 40 V
V
S
(*) Output Peak Current(non repetitive t = 0.1ms) 4.5 A
I
O
(*) Output Peak Current(repetitive f ≥ 10Hz) 3.5 A
I
O
PowerDissipation at T
P
tot
,T
T
j
(*) The max. output current is internally limited.
Storageand JunctionTemperature –40 to150 °C
stg
THERMAL DATA
Symbol Parameter Value Unit
R
th j-case
ThermalResistance Junction-case Max. 3 °C/W
=60°C30W
case
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, T
Rt
h (heatsink)
=4°C/W, unless otherwise specified)
=25°C, GV= 50dB,
amb
Symbol Parameter Test Condition Min. Typ. Max. Unit
SupplyVoltage 8 18 V
V
S
QuiescentOutput Voltage VS = 14.4V
V
O
TotalQuiescent Drain Current VS=14.4V
I
d
Stand-byCurrent Pin 3 grounded 5 mA
I
SB
OutputPower (eachchannel) f = 1KHz, d = 10%
P
O
V
=13.2V
S
V
=13.2V
S
V
=14.4V
S
R
=4Ω
L
R
=3.2Ω
L
R
=2Ω
L
R
= 1.6Ω
L
=13.2V
V
S
R
=3.2Ω
L
R
= 1.6Ω
L
=16V; RL=2Ω 12 w
V
S
6.6
6.0
6
7
9
10
6
9
7.2
6.6
65
62
6.5
8
10(*)
11
6.5
10
7.8
7.2
120
120
d Distortion (each channel) f = 1KHz
V
=14.4V; RL=4Ω
S
P
= 50mW to 4W
O
V
=14.4V; RL=2Ω
S
P
= 50mW to 6W
O
V
=13.2V; RL= 3.2Ω
S
P
= 50mW to 3W
O
V
=13.2V; RL= 1.6Ω
S
P
= 50mW to 6W
O
CT Cross Talk V
Input SaturationVoltage 300 mV
V
i
=14.4V
S
V
= 4Vrms RL=4Ω
O
f = 1KHz
f = 10KHz R
g
=5KΩ
50
40
0.2
0.3
0.2
0.3
60
45
1
1
1
1
V
V
mA
mA
W
W
W
W
w
w
%
%
%
%
dB
dB
2/10
TD A 2004A
ELECTRICAL CHARACTERISTICS (continued
Symbol Parameter Test Condition Min. Typ. Max. Unit
InputResistance (non invertinginput) f = 1KHz 70 200 KΩ
R
i
Low Frequency Roll off (-3dB) RL=4Ω
f
L
HighFrequency Roll off (-3dB) RL= 1.6Ω to 4Ω 15 KHz
f
H
Voltagegain (open loop) f = 1KHz 90 dB
G
V
Voltagegain (closed loop) f = 1KHz 48 50 51 dB
closedloop gainmatching 0.5 dB
TotalInput noise Voltage Rg= 10KΩ (**) 1.5 5 µV
e
N
SVR Supply Voltage Rejection f
η Efficiency V
T
Thermal Shutdown Junction
J
Temperature
Notes : (*) 9.3W without Bootstrap
(**) BandwithFilter: 22Hz to 22KHz.
R
=2Ω
L
R
= 3.2Ω
L
R
= 1.6Ω
L
=100Hz; Rg= 10KΩ
ripple
C3 = 10µFV
= 14.4V f = 1KHz
S
R
=4Ω PO=6.5W
L
R
=2Ω PO= 10W
L
V
= 13.2V f = 1KHZ
S
R
=3.2Ω PO=6.5W
L
R
= 1.6Ω PO=10W
L
ripple
35 45 dB
=0.5Vrms
70
60
70
60
145 °C
35
50
40
55
Hz
Hz
Hz
Hz
%
%
%
%
Figure 1 : Test an d App lica tion Circ u it .
3/10
TD A200 4A
Figure 2 : P.C. B oard and Component layout of the fig. 1 (scale 1 : 1).
Figure3 : QuiescentOutputVoltagevs.
SupplyVoltage.
4/10
Figure4 : QuiescentDrainCurrentvs.
SupplyVoltage.
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