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INTEGRATED CIRCUITS
DATA SHEET
TDA1521A
2 x 6 W hi-fi audio power amplifier
July 1994
Product specification
File under Integrated Circuits, IC01
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A GENERAL DESCRIPTION The TDA1521A is a dual hi-fi audio power amplifier encapsulated in a 9-lead plastic power package. The device is especially designed for mains fed applications (e.g. stereo tv sound and stereo radio). Features • Requires very few external components • Input muted during power-on and off (no switch-on or switch-off clicks) • Low offset voltage between output and ground • Excellent gain balan
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A Fig.1 Block diagram. July 1994 3
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A PINNING 1 - INV1 non-inverting input 1 negative supply (symmetrical) 5 - V P 2 INV1 inverting input 1 ground (asymmetrical) ground (symmetrical) 6 OUT2 output 2 3 GND 1 ⁄ V (asymmetrical) 7 + V positive supply 2 P P 4 OUT1 output 1 8 INV2 inverting input 2 9 - INV2 non-inverting input 2 FUNCTIONAL DESCRIPTION This hi-fi stereo power amplifier is designed for mains fed applications. The circuit is designed for
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A Fig.2 Power derating curve. THERMAL RESISTANCE From junction to case R = 6 K/W th j-c HEATSINK DESIGN EXAMPLE With derating of 6 K/W, the value of heatsink thermal resistance is calculated as follows: given R = 8 Ω and V = ± 12 V, the measured maximum dissipation is 7,8 W; then, for a maximum ambient temperature L P of 60 °C, the required thermal resistance of the heatsink is 150 – 60 R = – 6 = 5,5 K/W ------
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A CHARACTERISTICS PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT Supply voltage range operating mode V ± 7,5 ± 12,0 ± 20,0 V P input mute mode V ± 2,0 -± 5,8 V P Repetitive peak output current I -- 2,2 A ORM Operating mode: symmetrical power supply; test circuit as per Fig.11; V = ± 12 V; R = 8 Ω; T = 25 °C; f = 1 kHz P L amb Total quiescent current without R I 18 40 70 mA L tot Output power THD = 0,5% P 56 - W
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT Operating mode: asymmetrical power supply; test circuit as per Fig.12; V = 24 V; R = 8 Ω; T = 25 °C; f = 1 kHz P L amb Total quiescent current I 18 40 70 mA tot Output power THD = 0,5% P 56 - W o THD = 10% P 6,5 8 - W o Total harmonic distortion P = 4 W THD - 0,13 0,2 % o Power bandwidth THD = 0,5% 40 to note 1 B 16 k Hz Voltage gain G 29 30 31 dB v Gain balance
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A APPLICATION INFORMATION Input mute circuit 1 The input mute circuit operates only during switching on and off of the supply voltage. The circuit compares the ⁄ supply 2 voltage (at pin 3) with an internally fixed reference voltage (V ), derived directly from the supply voltage. When the ref voltage at pin 3 is lower than V the non-inverting inputs (pins 1 and 9) are disconnected from the amplifier. The voltage
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A Fig.4 Output power as a function of supply voltage; symmetrical supply; R = 8 Ω; f = 1 kHz. L Fig.5 Distortion as a function of frequency; symmetrical supply; V = ±12 V; R = 8 Ω; P = 3 W. P L o July 1994 9
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A Fig.6 Supply voltage ripple rejection; symmetrical supply, V = ±12 V; V = 200 mV. P RR Fig.7 Power dissipation as a function of output power; asymmetrical supply; V = 24 V; R = 8 Ω; f = 1 kHz. S L July 1994 10
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A Fig.8 Output power as a function of supply voltage; asymmetrical supply; R = 8 Ω; f = 1 kHz. L Fig.9 Distortion as a function of frequency; asymmetrical supply; V = 24 V; R = 8 Ω; P = 3 W. S L o July 1994 11
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A Fig.10 Supply voltage ripple rejection; asymmetrical supply; V = 24 V; V = 200 mW. S RR July 1994 12
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A (1) To be connected as close as possible to the I.C. Fig.11 Test and application circuit; symmetrical power supply. (1) To be connected as close as possible to the I.C. Fig.12 Test and application circuit; asymmetrical power supply. July 1994 13
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A PACKAGE OUTLINE SIL9MPF: plastic single in-line medium power package with fin; 9 leads SOT110-1 D D 1 q A P P 2 1 A 3 q 2 q 1 A A 4 E pin 1 index c L 19 b Z e Q b w M 2 b 1 0 5 10 mm scale DIMENSIONS (mm are the original dimensions) (1) A 2 Z (1) (1) UNIT A Abc b b D D E eL P P Q q q q w A 3 4 1 2 1 1 1 2 max. max. 18.5 8.7 15.8 1.40 0.67 1.40 0.48 21.8 21.4 6.48 3.9 2.75 3.4 1.75 15.1 4.4 5.9 2.54 mm 3.7 0.25
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Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A SOLDERING The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the Introduction specified maximum storage temperature (T ). If the stg max printed-circuit board has been pre-heated, forced cooling There is no soldering method that is ideal for all IC may be necessary immediately after soldering to keep the packages. Wave soldering is often preferred when te
