TDA2822
Septe mbe r 20 03
DUAL POWER AMPLIFIER
®
.SUPPLY VOLTAGE DOWN TO 3 V
.LOW CROSSOVER DISTORSION
.LOW QUIESCENT CURRENT
.BRIDGE OR STE R EO CON FIGU RATION
DESCRIPTION
The TDA2822 is a monolithic integrated circuit in
12+2+2 powerdip, intended for use as dual audio
power am plifier in por t abl e r adio s a nd T S s ets.
POWERDIP
(Pla sti c 12+ 2+2 )
ORDERI NG NUMBE R : TDA2822
TYPICAL APP LICATION CIRCUIT (STEREO)
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SCHEMATIC DIAGRAM
ABSOLUTE MAXI MUM RATI NGS
Symbol Parameter Value Unit
VsSupply Voltage 15 V
IoOutput Peak Current 1.5 A
Ptot Total Power D issipation at Tamb = 50 °C
at Tcase = 70 °C1.25
4W
W
Tstg, TjStorage and Junction T emperature – 40 to 150 °C
PIN CO NNECTION (t op view)
INPUT+(1)
N.C.
INPUT-(1)
GND
GND
N.C.
OUTPUT(1)
1
3
2
4
5
6
7 N.C.
GND
OUTPUT(2)
GND
INPUT-(2)
N.C.
INPUT+(2)16
15
14
13
12
10
11
D95AU321
+V
S
8 N.C.9
TDA2822
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THERMAL DATA
Symbol Parameter Value Unit
Rth j-amb
Rt h j- ca se
Thermal Resistance Junction-ambient
Thermal Resistance Junction-pins Max
Max 80
20 °C/W
°C/W
ELECTRICAL CHARACTERISTICS (Vs = 6 V, Tamb = 25 °C, unless otherwise specified)
STEREO (test c ircuit of fig. 1)
Symbol Parameter Test Condition Min. Typ. Max. Un it
VsSupply Voltage 3 15 V
VcQuiescent Output Voltage Vs = 9 V
Vs = 6 V 4
2.7 V
V
IdQuiescent Drain Current 6 12 mA
IbInput Bias Current 100 nA
PoOutput Power
(each c hannel) d = 10 % f = 1 kHz
Vs = 9 V RL = 4 Ω
Vs = 6 V RL = 4 Ω
Vs = 4.5 V RL = 4 Ω
1.3
0.45 1.7
0.65
0.32
W
W
W
GvClosed Loop Voltage Gain f = 1 kHz 36 39 41 dB
RiInput Resistance f = 1 kHz 100 kΩ
eN Total Input Noise Rs = 10 kΩ
B = 22 Hz to 22 kH z
Curve A 2.5
2µV
µV
SVR Supply Voltage Rejection f = 100 Hz 24 30 dB
CS Channel Separation Rg = 10 kΩ f = 1 kH z 50 dB
VsSupply Voltage 3 15 V
IdQuiescent Drain Current RL = ∞612mA
V
os Output Offset Voltage RL = 8 Ω10 60 mV
IbInput Bias Current 100 nA
PoOutput Pow er d = 10 % f = 1 kHz
Vs = 9 V RL = 8 Ω
Vs = 6 V RL = 8 Ω
Vs = 4.5 V RL = 4 Ω
2.7
0.9 3.2
1.35
1
W
W
W
d Distortion (f = 1 kH z) RL = 8 Ω Po = 0.5 W 0.2 %
GvClosed Loop Voltage Gain f = 1 kHz 39 dB
RiInput Resistance f = 1 kHz 100 kΩ
eN Total Input Noise Rs = 10 kΩ
B = 22 Hz to 22 kH z
Curve A 3
2.5 µV
µV
SVR Supply Voltage Rejection f = 100 Hz 40 dB
TDA2822
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Figure 1 : Test Circuit (stereo).
Figure 2 : P.C . Bo ar d and Com ponents Layout o f the Circ uit of F igu re 1 (1:1 s c ale).
TDA2822
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Figure 3 : Tes t Cir c uit (b ri dge) .
Figure 4 : P.C . Bo ar d and Com ponents Layout o f the Circ uit of F igu re 3 (1:1 s c ale).
TDA2822
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Figure 5 : Outp ut Po wer v s. S up ply V olt ag e
(Stereo). Figur e 6 : Output P ow er vs . S upply Voltage
(Bridge).
Figure 7 : Distor s ion vs. Output Po wer (B r id ge) . Figure 8 : Dist or s ion v s . O utput P ow er (B r idge ).
Figure 9 : S upply Volt age Rejection vs .
Frequency. Figur e 10 : Qui es c ent Curr ent v s . Sup ply V olt ag e.
TDA2822
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Figure 11 : Total Po wer Dissipation vs. Output
Power (Stereo). Figure 12 : Total P ow er Dis s ipation vs . O utput
Powe r ( B ri dge ).
Figure 13 : Total Po wer Dissipation vs. Output
Power (Br idge).
TDA2822
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Figure 14 : App lic at io n Circuit for P or ta ble Radios.
MOUNTING I NSTRUCTION
The Rth j-amb of the TDA2822 can be reduced by sol-
dering the G ND pins to a suitab le copp er area of the
printed circuit board (Figure 15) or to an external
heatsink (Fig ur e 16).
The dia gr am of F igu re 17 shows t he m ax im um dis-
sipable power Ptot and the Rth j-am b as a function of
the side "∂" of two equal square copper areas having
a thick nes s of 35 µ (1.4 mils).
Duri ng s oldering t he pins tem pe rature m us t not ex -
ceed 260 °C and the soldering time must not be
longer t han 12 se c onds .
The ex ter nal heats ink or pr inted circ uit c opper ar ea
mus t be c onnected to electr ic al gr ou nd.
Figure 15 : Ex am pl e of P.C . Bo ar d Cop per A re a
whic h is us ed as H eat s ink . Figure 16 : Ex tern al Heatsink M ounting Exam ple .
TDA2822
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Figure 6 : Maxi m um Dis s ipable Power and
Junc tion to Am bient Therm al
Resi stance vs. S ide "∂".
Figure 7 : Maxim um A ll owable Power Dis s ipation
vs . A mb ient Tem peratur e.
TDA2822
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DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
a1 0.51 0.020
B 0.85 1.40 0.033 0.055
b 0.50 0.020
b1 0.38 0.50 0.015 0.020
D 20.0 0.787
E 8.80 0.346
e 2.54 0.100
e3 17.78 0.700
F 7.10 0.280
I 5.10 0.201
L 3.30 0.130
Z 1.27 0.050
Powerdip 16
OUTLINE AND
MECHANICAL DATA
TDA2822
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quences 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. Specifications mentioned in this
publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMi-
croelectronics products are not authorized for use as critical components in life support devices or systems without express written
approval of STMicr oelectroni cs.
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TDA2822
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