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| TECHNICAL DATA 2W+2W AMPLIFIER WITH DC VOLUME CONTROL DESCRIPTION The KKA7496L is a stereo 2W+2W class AB power amplifier assembled in the @ Powerdip 14+3+3 package, specially designed for high quality sound, TV and Monitor applications. Features of the KKA7496L include linear volume control, Stand-by and mute functions. * * * * * * * * * * * * * 2W+2W OUTPUT POWER RL = 8 @THD = 10% Vcc = 14V KKA7496L ST-BY AND MUTE FUNCTIONS) LOW TURN-ON TURN-OFF POP NOISE LINEAR VOLUME CONTROL DC COUPLED WITH POWER OP. AMP. NO BOUCHEROT CELL NO ST-BY RC INPUT NETWORK SINGLE SUPPLY RANGING UP TO 15V SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION INTERNALLY FIXED GAIN SOFT CLIPPING VARIABLE OUTPUT AFTER VOLUME CONTROL CIRCUIT POWERDIP (14+3+3) PACKAGE ORDERING INFORMATION KKA7496L Plastic TA = 0 to 70 C BLOCK DIAGRAM 1 KKA7496L Absolute Maximum Ratings Symbol Vs VIN Tamb Tstg, Tj V6 DC Supply Voltage Maximum Input Voltage Ambient Operating Temperature Storage and Junction Temperature Volume CTRL DC voltage Parameter Value 26 8 0 to 70 -40 to 150 7 Unit V Vpp C C V PIN CONNECTION ELECTRICAL CHARACTERISTICS (Refer to the test circuit Vs = 14V, RL = 80,Rg = 50 , Tam = 25C) Symbol Vs Iq DC/Vos Vo Po THD Ipeak Vin Gv GvLine AMin VOL BW Parameter Supply Voltage Range Total Quiescent Current Output DC Offset Referred to SVR Potenial Quiescent Output Voltage Output Power Total Harmonic Distortion Output Peak Current Input Signal Closed Loop Gain Monitor Out Gain Attenuation at Minimum Volume Test Condition No Input Signal Min 10 Typ 25 200 7 2 1.3 Max 18 50 Unit V mA mV V W W % A Vrms dB dB dB MHz THD = 10%, RL = 8 THD = 1%, RL = 8 Gv = 30dB, Po = 1W, f = 1KHz (internally limited) Vol Ctrl > 4.5V Vol Ctrl > 4.5V, Zload > 30K Vol Ctrl < 0.5V 1.6 0.4 0.7 28.5 -1.5 80 0.9 30 0 2.8 31.5 1.5 0.6 2 KKA7496L ELECTRICAL CHARACTERISTICS (continued) Symbol eN Parameter Total Output Noise Test Condition f = 20Hz to 22KHz Play, max volume f = 20Hz to 22KHz Play, max attenuation f = 20Hz to 22KHz Mute Min Typ 500 100 60 Max 800 250 150 Unit V V V V/s K SR Ri RVar Out Rload Var Out SVR Slew Rate Input Resistance Variable Output Resistance Variable Output Load Supply Voltage Rejection f = 1kHz, max volume CSVR = 470F, VRIP = 1Vrms f = 1kHz, max attenuation CSVR = 470F, VRIP = 1Vrms 5 22.5 2 35 55 8 30 30 39 65 150 160 100 K dB dB C C TM Ts Thermal Muting Thermal Shut-down MUTE STAND-BY & INPUT SELECTION FUNCTIONS VST ON VST OFF VM ON VM OFF IqST-BY AMUTE IstbyBIAS Stand-by ON Threshold Stand-by OFF Threshold Mute ON Threshold Mute OFF Threshold Quiescent Current @ Stand-by Mute Attenuation Stand-by bias current Stand by on VST-BY = 5V VMUTE = 5V Play or Mute Mute Play 0.6 50 65 80 -20 -5 1 0.2 5 2 3.5 1.5 1 3.5 1.5 V V V V mA dB A A A A A ImuteBIAS Mute bias current APPICATION SUGGESTIONS The recommended values of the external components are those shown on the application circuit of figure 1A. Different values can be used, the following table can help the designer. COMPONENT SUGGESTION VALUE R1 R2 P1 C1 C2 C3 C4 C5 C6 C7 C8 C9 300K 10K 50K 1000F 470nF 470nF 470F 100nF 1000F 1F 1000F 100nF PURPOSE Volume control circuit Mute time constant Volume control circuit Supply voltage bypass Input DC decoupling Input DC decoupling Ripple rejection Volume control time constant Output DC decoupling Mute time constant Output DC decoupling Supply voltage bypass LARGER THAN SUGGESTION Larger volume regulation time Larger mute on/off time SMALLER THAN SUGGESTION Smaller volume regulation time Smaller mute on/off time Danger of oscillation Higher low frequency cutoff Higher low frequency cutoff Worse SVR Smaller volume regulation time Higher low frequency cutoff Smaller mute on/off time Higher low frequency cutoff Danger of oscillation Lower low frequency cutoff Lower low frequency cutoff Better SVR Larger volume regulation time Lower low frequency cutoff Larger mute on/off time Lower low frequency cutoff 3 KKA7496L Figure 1 A. Application Circuit 4 KKA7496L MUTE STAND-BY TRUTH TABLE MUTE H L H L ST-BY H H L L OPERATING CONDITIO STANDBY STANDBY MUTE PLAY Turn ON/OFF Sequences (for optimizing the POP performances) A) USING MUTE AND STAND-BY FUNCTIONS B) USING ONLY THE MUTE FUNCTION To simplify the application, the stand-by pin can be connected directly to Ground. During the ON/OFF transitions is recommend to respect the following conditions. - At the turn-on, the transition mute-play must be made when the SVR pin is higher than 2.5V - At the turn-off, the KKA7496L must be brought to mute from the play condition when the SVR pin is higher than 2.5V 5 KKA7496L Quiescent current vs. Supply Voltage Output DC Voltage vs. Supply Voltage Output DC Offset vs. Supply Voltage Output Power vs. Supply Voltage Distortion vs. Output Power Closed Loop gain vs. Frequency 6 KKA7496L St-By Attenuation vs. Vpin 11 Mute Attenuation vs. Vpin 12 7 KKA7496L PACKAGE DIMENSION N SUFFIX PLASTIC DIP (MS - 001AD) A Dimension, mm 20 11 B 1 10 Symbol A B C MIN 24.89 6.10 MAX 26.92 7.11 5.33 F L D F 0.36 1.14 2.54 7.62 0 2.92 7.62 0.20 0.38 0.56 1.78 C -T- SEATING N G D 0.25 (0.010) M T K PLANE G H H J M J K L M N 10 3.81 8.26 0.36 NOTES: 1. Dimensions "A", "B" do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side. 8 |
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