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TDA7496L Datasheet(PDF) 3 Page - STMicroelectronics |
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TDA7496L Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 10 page ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Test Condition Min. Typ. Max. Unit eN Total Output Noise f = 20Hz to 22KHz Play, max volume 500 800 µV f = 20Hz to 22KHz Play, max attenuation 100 250 µV f = 20Hz to 22KHz Mute 60 150 µV SR Slew Rate 5 8 V/ µs Ri Input Resistance 22.5 30 K Ω RVar Out Variable Output Resistance 30 100 Ω Rload Var Out Variable Output Load 2 K Ω SVR Supply Voltage Rejection f = 1kHz; max volume CSVR = 470 µF; VRIP = 1Vrms 35 39 dB f = 1kHz; max attenuation CSVR = 470 µF; VRIP =1Vrms 55 65 dB TM Thermal Muting 150 °C Ts Thermal Shut-down 160 °C MUTE STAND-BY & INPUT SELECTION FUNCTIONS VST ON Stand-by ON Threshold 3.5 V VST OFF Stand-by OFF Threshold 1.5 V VM ON Mute ON Threshold 3.5 V VM OFF Mute OFF Threshold 1.5 V IqST-BY Quiescent Current @ Stand-by 0.6 1 mA AMUTE Mute Attenuation 50 65 dB IstbyBIAS Stand-by bias current Stand by on VST-BY = 5V VMUTE = 5V 80 µA µA Play or Mute -20 -5 µA ImuteBIAS Mute bias current Mute 1 5 µA Play 0.2 2 µA APPLICATION SUGGESTIONS The recommended values of the external components are those shown on the application circuit of fig- ure 1A. Different values can be used, the following table can help the designer. COMPONENT SUGGESTION VALUE PURPOSE LARGER THAN SUGGESTION SMALLER THAN SUGGESTION R1 300K Volume control circuit Larger volume regulation time Smaller volume regulation time R2 10K Mute time constant Larger mute on/off time Smaller mute on/off time P1 50K Volume control circuit C1 1000 µF Supply voltage bypass Danger of oscillation C2 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoff C3 470nF Input DC decoupling Lower low frequency cutoff Higher low frequency cutoff C4 470 µF Ripple rejection Better SVR Worse SVR C5 100nF Volume control time costant Larger volume regulation time Smaller volume regulation time C6 1000 µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff C7 1 µF Mute time costant Larger mute on/off time Smaller mute on/off time C8 1000 µF Output DC decoupling Lower low frequency cutoff Higher low frequency cutoff C9 100nF Supply voltage bypass Danger of oscillation TDA7496L 3/10 |
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