TDA7269A W STEREO AMPLIFIER WITH MUTE & ST-BY

Transcription

1 TDAA STEREO AMPLIFIER ITH MUTE & STBY IDE SUPPLY VOLTAGE RANGE UP TO ±0V SPLIT SUPPLY HIGH OUTPUT THD =0%, RL =Ω,VS= V NO POP AT TURNON/OFF MUTE (POP FREE) STANDBY FEATURE (LO I q ) SHORT CIRCUIT PROTECTION TO THERMAL OVERLOAD PROTECTION DESCRIPTION The TDAA is class AB dual Audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound application as HiFi music centers and stereo TV sets. Multiwatt ORDERING NUMBER: TDAA Figure : Typical Application Circuit K µf MUTE/ STBY 000µF IN (L) OUT (L) K µf K K IN (L).Ω 00nF 0Ω RL (L) V µp 0 IN (R) 0Ω K µf IN (R) OUT (R).Ω RL (R) V S 00nF DAU0 000µF July /

2 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V S DC Supply Voltage ± V I O Output Peak Current (internally limited) A P tot Power Dissipation T case =0 C 0 T op Operating Temperature 0 to 0 C Tstg, Tj Storage and Junction Temperature 0 to 0 C PIN CONNECTION (Top view) 0 IN() IN() IN() IN() V S MUTE OUTPUT() OUTPUT() V S TAB CONNECTED TO PIN DAU THERMAL DATA Symbol Description Value Unit R th jcase Thermal Resistance Junctioncase Max. C/ SINGLE SUPPLY APPLICATION D.V R 0K C µf R K C 000µF C 0.µF PLAY V Q BSX MUTE/STBY IN (L) OUT (L) C 0µF 0 MUTE C 00µF R K C µf C µf IN (R) IN (L) IN (R) R 0K R K R.Ω C 0.µF C0 0µF OUT (L) 0 OUT (R) R 0K R K R.Ω C 0.µF OUT (R) DAU /

3 ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS = V; RL =Ω; RS = 0Ω; GV = 0dB; f = KHz; Tamb = C, unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit V S Supply Range R L =Ω ; 0 V R L =Ω ; V I q Total Quiescent Current 0 00 ma V OS Input Offset Voltage mv Ib Non Inverting Input Bias Current 00 na P O Output Power THD = 0% R L =Ω ; V S.V; R L =Ω THD = % R L =Ω ; V S.V; R L =Ω THD Total Harmonic Distortion RL = Ω ; PO = ; f = KHz 0.0 % R L =Ω ; P O = 0. to ; f = 00Hz to KHz 0. % 0. R L =Ω;P O = ; f = KHz 0.0 % R L =Ω ; V S 0V; P O = 0. to ; f = 00Hz to KHz % C T Cross Talk f = KHz f = 0KHz 0 SR Slew Rate. 0 V/µs G OL Open Loop Voltage Gain 0 db e N Total Input Noise A Curve f = 0Hz to KHz 0 0 R i Input Resistance 0 KΩ SVR Supply Voltage Rejection fr = 00Hz Vr = 0.V 0 db (each channel) T j Thermal Shutdown Junction Temperature C MUTE FUNCTION [ref: VS] (*) VT MUTE Mute / Play Threshold V A M Mute Attenuation 0 0 db STANDBY FUNCTION [ref: VS] (Only for Split Supply) VT STBY Standby / Mute Threshold... V ASTBY Standby Attenuation 0 db I q STBY Quiescent Standby ma (*) In mute condition the current drawn from pin must be 0µA. db db µv µv /

4 MUTE STANDBY FUNCTION The pin (MUTE/STANDBY) controls the amplifier status by two different thresholds, referred to. hen Vpin higher than = VS.V the amplifier is in Standby mode and the final stage generators are off when Vpin is between VS.V and VS V the final stage current generators are switched on and the amplifier is in mute mode when Vpin is lower than VS V the amplifier is play mode. Figure (V) 0 t V S 0 V IN (mv) Vpin (V) V S V S. V S V S 0 I q (ma) 0 VOUT (V) OFF STDBY PLAY STDBY PLAY OFF STDBY MUTE DAU0 MUTE MUTE MUTE /

5 Figure : Test and Application Circuit (Stereo Configuration) R R C MUTE/ STBY IN (L) C OUT (L) C S DZ R R C R IN (L) R R C RL (L) S 0 IN (R) R R C IN (R) OUT (R) R0 RL (R) V S C DAU0 C C APPLICATIONS SUGGESTION (Demo Board Schematic) The recommended values of the external components are those shown are the demo board schematic different values can be used: the following table can help the designer. COMPONENTS RECOMMENDED VALUE PURPOSE LARGER THAN RECOMMENDED VALUE SMALLER THAN RECOMMENDED VALUE R 0KΩ Mute Circuit Increase of Dz Biasing Current R KΩ Mute Circuit Vpin # Shifted Downward Vpin # Shifted Upward R KΩ Mute Circuit Vpin # Shifted Upward Vpin # Shifted Downward R KΩ Mute Circuit Vpin # Shifted Upward Vpin # Shifted Downward R, R KΩ Closed Loop Gain Increase of Gain R, R 0Ω Setting (*) Decrease of Gain R, R0.Ω Frequency Stability Danger of Oscillations Danger of Oscillations C, C µf C µf C, C 000µF Input DC Decoupling StBy/Mute Time Constant Supply Voltage Bypass C, C 0.µF Supply Voltage Bypass C, C 0.µF Frequency Stability Dz.V Mute Circuit (*) Closed loop gain has to be => db Larger On/Off Time Higher Low Frequency Cutoff Smaller On/Off Time Danger of Oscillations Danger of Oscillations /

6 MULTIATT PACKAGE MECHANICAL DATA DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A 0. B. 0.0 C. 0.0 D 0.0 E F G G H. 0. H L L L L L L M M S S Dia /

7 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. Specification 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 STMicroelectronics Printed in Italy All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia Brazil Canada China France Germany Italy Japan Korea Malaysia Malta Mexico Morocco The Netherlands Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A. /