 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| TDA7497 10 + 10W STEREO AMPLIFIER WITH MUTE/ST-BY PRODUCT PREVIEW WIDE SUPPLY VOLTAGE RANGE (UP TO 22V ABS MAX.) SPLIT SUPPLY HIGH OUTPUT POWER: 10 + 10W @ THD =10%, R L = 8, VS = +14V NO POP AT TURN-ON/OFF MUTE (POP FREE) STAND-BY FEATURE (LOW IQ) FEW EXTERNAL COMPONENTS SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION DESCRIPTION The TDA7497 is class AB dual Audio power amplifier assembled in the Multiwatt package, speFigure 1: Typical Application Circuit Multiwatt 8 ORDERING NUMBER: TDA7497 cially designed for high quality sound application as Hi-Fi music centers and stereo TV sets. +V S 1000F 15K 1F MUTE/ ST-BY IN (L) 1F +VS 4 6 + 2 3 OUT (L) 4.7 100nF RL (L) 15K +5V P 18K GND 7 1F IN (R) 8 + 5 -VS 1 OUT (R) 4.7 100nF RL (R) 1000F D94AU069A September 1995 1/7 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. TDA7497 ABSOLUTE MAXIMUM RATINGS Symbol VS IO Ptot Tstg, Tj DC Supply Voltage Output Peak Current (internally limited) Power Dissipation Tcase = 70C Storage and Junction Temperature Parameter Value 22 3 12 -40 to +150 Unit V A W C PIN CONNECTION (Top view) 8 7 6 5 4 3 2 1 Tab connected to pin 5 D94AU096 IN (1) GND IN (2) -VS MUTE/ST-BY OUTPUT (2) +VS OUTPUT (1) THERMAL DATA Symbol Rth j-case Description Thermal Resistance Junction-case Max Value 2 Unit C/W 2/7 TDA7497 ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS + 14V; RL = 8; Rs = 50; f = 1KHz; Tamb = 25C, unless otherwise specified.) Symbol VS Iq PO d CT SR GV GV eN Ri SVR Parameter Supply Range Total Quiescent Current Output Power Total Harmonic Distortion Cross Talk Slew Rate Closed Loop Voltage Gain Voltage Gain Matching Total Input Noise A Curve f = 20Hz to 22KHz 15 fr = 100Hz; Vripple = 0.5VRMS Test Condition Min. +5 Typ. 80 10 7.5 0.02 0.5 70 60 10 30 0.2 2.5 3.5 20 60 145 Max. +20 Unit V mA W W % % dB dB V/s dB dB V V K dB C d = 10% d = 1% PO = 1W PO = 0.1 to 5W f = 0.1 to 15KHz f = 1KHz f = 10KHz 29 31 8 Input Resistance Supply Voltage Rejection (each channel) Tj Thermal Shut-down Junction Temperature MUTE FUNCTION [ref: +VS] Mute / Play Threshold VTMUTE AM Mute Attenuation STAND-BY FUNCTION [ref: +VS] VTST-BY AST-BY Iq ST-BY Stand-by / Mute Threshold Stand-by Attenuation Quiescent Current @ Stand-by -7 60 -3.5 -6 90 -2.5 110 3 -5 V dB V dB mA -1.5 Note : (*) FULL POWER up to. VS = 22.5V with R L = 8 and VS = 16V with RL = 4 MUSIC POWER is the maximal power which the amplifier is capable of producing across the rated load resistance (regardless of non linearity) 1 sec after the application of a sinusoidal input signal of frequency 1KHz. APPLICATIONS SUGGESTION (Demo Board Schematic) The recommended values of the external compoCOMPONENTS R1 R2 R3 R4 R5, R6 C1, C2 C3 C4, C6 C5, C7 C8, C9 Dz RECOMMENDED VALUE 10K 15K 18K 15K 4.7 1F 1F 1000F 0.1F 0.1F 5.1V PURPOSE Mute Circuit Mute Circuit Mute Circuit Mute Circuit Frequency Stability Input DC Decoupling St-By/Mute Time Constant Supply Voltage Bypass Supply Voltage Bypass Frequency Stability Mute Circuit nents are those shown on the demo board schematic. Different values can be used: the following table can help the designer. LARGER THAN RECOMMENDED VALUE Increase of Dz Biasing Current Vpin # 4 Shifted Downward Vpin # 4 Shifted Upward Vpin # 4 Shifted Upward Danger of Oscillations SMALLER THAN RECOMMENDED VALUE Vpin # 4 Shifted Upward Vpin # 4 Shifted Downward Vpin # 4 Shifted Downward Danger of Oscillations Higher Low Frequency Cutoff Smaller On/Off Time Danger of Oscillations Danger of Oscillations Larger On/Off Time 3/7 TDA7497 Figure 2: Application circuit +VS R2 15K C3 1F C1 1F C4 1000F C5 100nF MUTE/ ST-BY IN (L) +VS 4 6 + 2 R1 SW1 DZ T1 3 OUT (L) R5 4.7 C8 100nF R4 15K SW2 R3 18K GND 7 RL (L) C2 1F IN (R) 8 + 5 -VS C7 100nF 1 OUT (R) R6 4.7 C9 100nF RL (R) D94AU068A C6 1000F Figure 3: Demo Board Schematic 4/7 TDA7497 MUTE STAND-BY FUNCTION The pin 4 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to +VS. - When Vpin4 higher than = +VS - 2.5V the amplifier is in Stand-by mode and the final stage generators are off - when Vpin4 is between +VS - 2.5V and +VS - 6V the final stage current generators are switched on and the amplifier is in mute mode - when Vpin4 is lower than +VS - 6V the amplifier is play mode. Figure 4: Attenuation & Total Quiescent Current vs. Vpin4 Voltage +VS (V) 20 t -VS -20 VIN (mV) Vpin4 (V) VS VS-2.5 VS-6 VS-10 Iq (mA) 0 VOUT (V) OFF STDBY MUTE PLAY STDBY PLAY OFF STDBY D94AU084 MUTE MUTE MUTE 5/7 TDA7497 MULTIWATT8 PACKAGE MECHANICAL DATA DIM. A B C E F F1 G G1 H1 H2 L L1 L2 L3 L4 L5 L7 S S1 U Z Dia1 MIN. mm TYP. MAX. 5 2.65 1.6 0.55 0.85 0.75 2.68 17.92 20.2 20.65 15.7 17.20 17.5 10.7 17.35 17.75 10.9 15.75 2.9 2.6 2.6 0.55 0.85 3.85 MIN. inch TYP. MAX. 0.197 0.104 0.063 0.022 0.033 0.029 0.105 0.71 0.795 0.81 0.62 0.68 0.689 0.421 0.68 0.699 0.429 0.62 0.114 0.102 0.102 0.022 0.034 0.152 0.49 0.78 0.68 2.40 17.64 19.6 20.35 17.05 17.25 10.3 15.45 2.65 1.9 1.9 0.40 0.70 3.65 2.54 17.78 0.019 0.030 0.027 0.094 0.69 0.772 0.80 0.67 0.679 0.406 0.61 0.104 0.075 0.075 0.015 0.028 0.144 0.10 0.70 6/7 TDA7497 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics 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 SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 7/7 |
Price & Availability of TDA7497
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |