TDA7231A
1.6W AUDIO AMPLIFIER
. . . . .
OPERATING VOLTAGE 1.8 TO 15 V LOW QUIESCENT CURRENT HIGH POWER CAPABILITY LOW CROSSOVER DISTORTION SOFT CLIPPING
MINIDIP (4+4)
ORDERING NUMBER : TDA7231A
DESCRIPTION The TDA7231A is a monolithic integrated circuit in 4 + 4 lead minidip package. It is intended for use as class AB power amplifier with wide range of supply voltage in portable radios, cassette recorders and players, etc. PIN CONNECTION
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ABSOLUTE MAXIMUM RATINGS
Symbol Vs Ptot Io Tstg, Tj Supply Voltage Total Power Dissipation at Tamb = 50 C at Tcase = 70 C Output Peak Current Storage and Junction Temperature Parameter Value 16 1.25 4 1 40 to 150 Unit V W W A C
THERMAL DATA
Symbol Rth j-amb Rth j-pins Parameter Thermal Resistance Junction-ambient Thermal Resistance Junction-pins Max. Max. Value 80 15 Unit C/W C/W
ELECTRICAL CHARACTERISTICS (Vs = 6 V, Tamb = 25 C, unless otherwise specified)
Symbol Vs Vo Id Ib Po Parameter Supply Voltage Quiescent Out Voltage Quiescent Drain Current Input Bias Current Output Power d = 10% Vs = 12V Vs = 9V Vs = 6V Vs = 6V Vs = 3V Vs = 3V f = 1kHz RL = 8 RL = 4 RL = 8 RL = 4 RL = 4 RL = 8 VS = 6 V VS = 3 V Test Conditions Min. 1.8 Typ. 2.7 1.2
Max.
d
Distortion
Gv Ri n eN
Closed Loop Voltage Gain Input Resistance Total Input Noise
Figure 1 : Test and Application Circuit
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Po = 0.2 W f = 1 kHz RL = 8
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3.6 100 1.8 1.6 0.4 0.7 110 70 0.3
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V V V
Unit
mA nA W W W W mW mW %
38 B = Curve A B = 22Hz to 22kHz 2 3
dB k V V
f = 1kHz Rs = 10k
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Figure 2 : P C. Board and Components Layout of the figure 1 (1:1 scale) .
Figure 3 : Output Power versus Supply Voltage
Figure 4 : Quiescent Current versus Supply Voltage
Figure 5 : Quiescent Output Voltage versus Supply Voltage
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Figure 6 : Supply Voltage Rejection versus Frequency
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mm MIN. A a1 B B1 b b1 D E e e3 e4 F I L Z 0.44 3.3 1.6 0.017 8.8 2.54 7.62 7.62 7.1 4.8 0.130 0.063 0.38 0.7 1.39 0.91 0.5 0.5 9.8 0.346 0.100 0.300 0.300 0.280 0.189 0.015 1.65 1.04 TYP. 3.3 0.028 0.055 0.036 0.020 0.020 0.386 0.065 0.041 MAX. MIN. inch TYP. 0.130 MAX.
DIM.
OUTLINE AND MECHANICAL DATA
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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. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners 2003 STMicroelectronics - All rights reserved STMicroelectronics GROUP OF COMPANIES Australia Belgium - Brazil - Canada - China Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States www.st.com.
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