TDA2822
DUAL POWER AMPLIFIER
. . . .
SUPPLY VOLTAGE DOWN TO 3 V LOW CROSSOVER DISTORSION LOW QUIESCENT CURRENT BRIDGE OR STEREO CONFIGURATION
POWERDIP (Plastic 12+2+2) ORDERING NUMBER : TDA2822
D E SC R I PT I O N The TDA2822 is a monolithic integrated circuit in 12+2+2 powerdip, intended for use as dual audio power amplifier in portable radios and TS sets.
T Y P I C A L APPLICATION CIRCUIT (STEREO)
September 2003
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P I N CONNECTION (top view)
INPUT+(1) N.C. INPUT-(1) GND GND OUTPUT(1) N.C. +VS
1 2 3 4 5 6 7 8
D95AU321
16 15 14 13 12 11 10 9
INPUT+(2) N.C. INPUT-(2) GND GND OUTPUT(2) N.C. N.C.
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Vs Io Ptot Tstg, Tj Supply Voltage Output Peak Current Total Power Dissipation at Tamb = 50 C at Tcase = 70 C Storage and Junction Temperature Parameter Value 15 1.5 1.25 4 40 to 150 Unit V A W W C
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THERMAL DATA
Symbol Rth j-amb Rth j-case Parameter Thermal Resistance Junction-ambient Thermal Resistance Junction-pins Max Max Value 80 20 Unit C/W C/W
ELECTRICAL CHARACTERISTICS (Vs = 6 V, Tamb = 25 C, unless otherwise specified) STEREO (test circuit of fig. 1)
Symbol Vs Vc Id Ib Po Parameter Supply Voltage Quiescent Output Voltage Quiescent Drain Current Input Bias Current Output Power (each channel) d = 10 % Vs = 9 V Vs = 6 V Vs = 4.5 V f = 1 kHz f = 1 kHz Rs = 10 k B = 22 Hz to 22 kHz Curve A f = 100 Hz Rg = 10 k f = 1 kHz 24 f = 1 kHz RL = 4 RL = 4 RL = 4 1.3 0.45 36 100 Vs = 9 V Vs = 6 V Test Condition Min. 3 4 2.7 6 100 1.7 0.65 0.32 39 41 12 Typ. Max. 15 Unit V V V mA nA W W W dB k 2.5 2 30 50 V V dB dB
Gv Ri
e
Closed Loop Voltage Gain Input Resistance Total Input Noise
N
SVR CS
Supply Voltage Rejection Channel Separation
Vs Id Vos Ib Po
Supply Voltage Quiescent Drain Current Output Offset Voltage Input Bias Current Output Power
3 RL = RL = 8 d = 10 % f = 1 kHz Vs = 9 V RL = 8 Vs = 6 V RL = 8 Vs = 4.5 V RL = 4 RL = 8 f = 1 kHz f = 1 kHz Po = 0.5 W 100 3 2.5 40 6 10 100 2.7 0.9 3.2 1.35 1 0.2 39
15 12 60
V mA mV nA W W W % dB k V V dB
d Gv Ri
e
Distortion (f = 1 kHz) Closed Loop Voltage Gain Input Resistance Total Input Noise
N
Rs = 10 k B = 22 Hz to 22 kHz Curve A f = 100 Hz
SVR
Supply Voltage Rejection
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Figure 1 : Test Circuit (stereo).
Figure 2 : P.C. Board and Components Layout of the Circuit of Figure 1 (1:1 scale).
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Figure 3 : Test Circuit (bridge).
Figure 4 : P.C. Board and Components Layout of the Circuit of Figure 3 (1:1 scale).
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Figure 5 : Output Power vs. Supply Voltage (Stereo). Figure 6 : Output Power vs. Supply Voltage (Bridge).
Figure 7 : Distorsion vs. Output Power (Bridge).
Figure 8 : Distorsion vs. Output Power (Bridge).
Figure 9 : Supply Voltage Rejection vs. Frequency.
Figure 10 : Quiescent Current vs. Supply Voltage.
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Figure 11 : Total Power Dissipation vs. Output Power (Stereo). Figure 12 : Total Power Dissipation vs. Output Power (Bridge).
Figure 13 : Total Power Dissipation vs. Output Power (Bridge).
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Figure 14 : Application Circuit for Portable Radios.
M O U N T I N G INSTRUCTION The Rth j-amb of the TDA2822 can be reduced by soldering the GND pins to a suitable copper area of the printed circuit board (Figure 15) or to an external heatsink (Figure 16). The diagram of Figure 17 shows the maximum dissipable power Ptot and the Rth j-amb as a function of the side "" of two equal square copper areas having a thickness of 35 (1.4 mils). Figure 15 : Example of P.C. Board Copper Area which is used as Heatsink.
During soldering the pins temperature must not exceed 260 C and the soldering time must not be longer than 12 seconds. The external heatsink or printed circuit copper area must be connected to electrical ground.
Figure 16 : External Heatsink Mounting Example.
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Figure 6 : Maximum Dissipable Power and Junction to Ambient Thermal Resistance vs. Side "". Figure 7 : Maximum Allowable Power Dissipation vs. Ambient Temperature.
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mm MIN. a1 B b b1 D E e e3 F I L Z 3.30 1.27 8.80 2.54 17.78 7.10 5.10 0.130 0.38 0.51 0.85 0.50 0.50 20.0 0.346 0.100 0.700 0.280 0.201 0.015 1.40 TYP. MAX. MIN. 0.020 0.033 0.020 0.020 0.787 0.055 inch TYP. MAX.
DIM.
OUTLINE AND MECHANICAL DATA
Powerdip 16
0.050
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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. Specifications 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.
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