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TDA1521A Dataheets PDF



Part Number TDA1521A
Manufacturers NXP
Logo NXP
Description 2 x 6 W hi-fi audio power amplifier
Datasheet TDA1521A DatasheetTDA1521A Datasheet (PDF)

INTEGRATED CIRCUITS DATA SHEET TDA1521A 2 x 6 W hi-fi audio power amplifier Product specification File under Integrated Circuits, IC01 July 1994 Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier GENERAL DESCRIPTION TDA1521A 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 com.

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INTEGRATED CIRCUITS DATA SHEET TDA1521A 2 x 6 W hi-fi audio power amplifier Product specification File under Integrated Circuits, IC01 July 1994 Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier GENERAL DESCRIPTION TDA1521A 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 balance between channels • Hi-fi according to IEC 268 and DIN 45500 • Short-circuit-proof • Thermally protected. QUICK REFERENCE DATA Stereo applications Supply voltage range Output power at THD = 0,5%, VP = ± 12 V Voltage gain Gain balance between channels Ripple rejection Channel separation Noise output voltage Po GV ∆GV SVRR α Vno(rms) typ. typ. typ. typ. typ. typ. 6 W 30 dB 0,2 dB 60 dB 70 dB 70 µV VP ± 7,5 to ± 21,0 V PACKAGE OUTLINE TDA1521A: 9-lead single in-line; plastic power (SOT 110B); SOT110-1; 1996 July 22. July 1994 2 Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier TDA1521A Fig.1 Block diagram. July 1994 3 Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier PINNING 1 2 3 4 −INV1 INV1 GND OUT1 non-inverting input 1 inverting input 1 ground (symmetrical) 1⁄ 2 VP (asymmetrical) TDA1521A 5 6 7 8 9 −VP OUT2 + VP INV2 −INV2 negative supply (symmetrical) ground (asymmetrical) output 2 positive supply inverting input 2 non-inverting input 2 output 1 FUNCTIONAL DESCRIPTION This hi-fi stereo power amplifier is designed for mains fed applications. The circuit is designed for both symmetrical and asymmetrical power supply systems. An output power of 2 × 6 watts (THD = 0,5%) can be delivered into an 8 Ω load with a symmetrical power supply of ± 12 V. The gain is fixed internally at 30 dB. Internal gain fixing gives low gain spread and very good balance between the amplifiers (0,2 dB). A special feature of this device is a mute circuit which suppresses unwanted input signals during switching on and off. Referring to Fig.12, the 100 µF capacitor creates a time delay when the voltage at pin 3 is lower than an internally fixed reference voltage. During the delay the amplifiers remain in their DC operating mode but are isolated from the non-inverting inputs on pins 1 and 9. Two thermal protection circuits are provided, one monitors the average junction temperature and the other the instantaneous temperature of the power transistors. Both protection circuits activate at 150 °C allowing safe operation to a maximum junction temperature of 150 °C without added distortion. RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) PARAMETER Supply voltage Non-repetitive peak output current Total power dissipation Storage temperature range Junction temperature Short-circuit time: outputs short-circuited to ground (full signal drive) CONDITIONS pin 7 pin 5 pins 4 and 6 see Fig.2 SYMBOL VP = V7-3 −VP = V5-3 IOSM Ptot Tstg Tj see note 1 symmetrical power supply asymmetrical power supply Note 1. For asymmetrical power supplies (at short circuiting of the load) the maximum supply voltage is limited to VP = 28 V. MIN. − − − MAX. +21 −21 4 UNIT V V A −55 − + 150 150 °C °C tsc tsc − − 1 1 hour hour July 1994 4 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 HEATSINK DESIGN EXAMPLE With derating of 6 K/W, the value of heatsink thermal resistance is calculated as follows: given RL = 8 Ω and VP = ± 12 V, the measured maximum dissipation is 7,8 W; then, for a maximum ambient temperature of 60 °C, the required thermal resistance of the heatsink is 150 – 60 R th h-a = --------------------- – 6 = 5,5 K/W 7, 8 Note: The metal tab (heatsink) has the same potential as pin 5 ( − VP). Rth j-c = 6 K/W July 1994 5 Philips Semiconductors Product specification 2 x 6 W hi-fi audio power amplifier CHARACTERISTICS PARAMETER Supply voltage range operating mode input mute mode Repetitive peak output current VP = ± 12 V; RL = 8 Ω; Tamb = 25 °C; f = 1 kHz Total quiescent current Output power Total harmonic distortion Power bandwidth Po = 4 W THD = 0,5% note 1 Voltage gain Gain balance Noise output voltage (r.m.s. value); unweighted (20 Hz to 20 kHz) Input impedance Ripple rejection Channel separation Input bias current DC output offset voltage with respect to ground VOFF − 30 note 2 RS = 0 Ω RS = 2 kΩ Vno(rms) |Zi| SVRR α Iib − 14 40 46 − 70 20 60 70 0,3 B Gv ∆Gv 29 − 20 to 16 k 30 0,2 THD − 0,15 without RL THD = 0,5% THD = 10% Itot Po Po 18 5 6,5 40 6 8,0 IORM − − VP VP ± 7,5 ± 2,0 ± 12,0 − CONDITIONS SYMBOL MIN. TYP. TDA1521A MAX. ± 20,0 ± 5,8 2,2 V V A UNIT Operating mode: symmetrical powe.


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