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TDA7497 Fiches technique(PDF) 3 Page - STMicroelectronics |
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TDA7497 Fiches technique(HTML) 3 Page - STMicroelectronics |
3 / 5 page ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS + 14V; RL =8 Ω;Rs =50Ω; f = 1KHz; Tamb =25 °C, unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit VS Supply Range +5 +20 V Iq Total Quiescent Current 80 mA PO Output Power d = 10% d= 1% 10 7.5 W W d Total Harmonic Distortion PO =1W PO = 0.1 to 5W f = 0.1 to 15KHz 0.02 0.5 % % CT Cross Talk f = 1KHz f = 10KHz 70 60 dB dB SR Slew Rate 10 V/ µs GV Closed Loop Voltage Gain 29 30 31 dB ∆GV Voltage Gain Matching 0.2 dB eN Total Input Noise A Curve f = 20Hz to 22KHz 2.5 3.5 8 µV µV Ri Input Resistance 15 20 K Ω SVR Supply Voltage Rejection (each channel) fr = 100Hz; Vripple = 0.5VRMS 60 dB Tj Thermal Shut-down Junction Temperature 145 °C MUTE FUNCTION [ref: +VS] VTMUTE Mute / Play Threshold -7 -6 -5 V AM Mute Attenuation 60 90 dB STAND-BY FUNCTION [ref: +VS] VTST-BY Stand-by / Mute Threshold -3.5 -2.5 -1.5 V AST-BY Stand-by Attenuation 110 dB Iq ST-BY Quiescent Current @ Stand-by 3 mA Note : (*) FULL POWER up to.VS = ±22.5V with RL =8Ω and VS = ±16V with RL =4Ω 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. COMPONENTS RECOMMENDED VALUE PURPOSE LARGER THAN RECOMMENDED VALUE SMALLER THAN RECOMMENDED VALUE R1 10K Ω Mute Circuit Increase of Dz Biasing Current R2 15K Ω Mute Circuit Vpin # 4 Shifted Downward Vpin # 4 Shifted Upward R3 18K Ω Mute Circuit Vpin # 4 Shifted Upward Vpin # 4 Shifted Downward R4 15K Ω Mute Circuit Vpin # 4 Shifted Upward Vpin # 4 Shifted Downward R5, R6 4.7 Ω Frequency Stability Danger of Oscillations Danger of Oscillations C1, C2 1 µF Input DC Decoupling Higher Low Frequency Cutoff C3 1 µF St-By/Mute Time Constant Larger On/Off Time Smaller On/Off Time C4, C6 1000 µF Supply Voltage Bypass Danger of Oscillations C5, C7 0.1 µF Supply Voltage Bypass Danger of Oscillations C8, C9 0.1 µF Frequency Stability Dz 5.1V Mute Circuit APPLICATIONS SUGGESTION (Demo Board Schematic) The recommended values of the external compo- nents are those shown on the demo board sche- matic. Different values can be used: the following table can help the designer. TDA7497 3/7 |
Numéro de pièce similaire - TDA7497 |
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Description similaire - TDA7497 |
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