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STK433-730-E 데이터시트(PDF) 11 Page - Sanyo Semicon Device |
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STK433-730-E 데이터시트(HTML) 11 Page - Sanyo Semicon Device |
11 / 12 page STK433-730-E No. A1249-11/12 STK433-700series Stand-by Control & Mute Control Application [The example of use STK433-*00series Stand-by control circuit] Features • By using the recommended stand-by control application, the pop noise level when the power is turned on/off can be significantly reduced. • By adjusting the limiting resistance (*1) in accordance with the voltages of the microcontroller and other components used, it is possible to perform stand-by control, facilitating the finished product design effort. (ex) STK433-*00series test circuit. When impressed by Stand-by control control [+5V]. Operation Explanation 1) About VST ( #13pin Stand-by Threshold) <1> Operation Mode When pin 13 reference voltage VST is equal to or greater than 2.5 V, the stand-by circuit is set off, and the amplifier is set to the operation mode. <2> Stand-by Mode When pin 13 reference voltage VST is equal to or less than 0.6V, the stand-by circuit is set off, and the amplifier is set to the stand-by mode. (*3) The pop noise that occurs when the power is turned ON is reduced by providing a time constant using a capacitor during operation. (*4) The pop noise level is reduced by discharging the capacitor with a resistor in the stand-by mode. 2 3 4 5 6 7 8 9 10 11 12 13 14 1 15 STK433-*00series +VCC Ch1 IN Ch1 NF Ch2 IN Ch2 NF Ch2 OUT Ch1 OUT -VCC MONITOR +PRE ST-BY Ch1 OUT Ch2 OUT -PRE 33k Ω 2k Ω (*4) 1k Ω (*1) 33 μF (min) (*3) Stand-by control circuit part H: Operation mode (+5V) L: Stand-by mode (0V) ΔVBE SUB/ GND ΔVBE ex) VST=(Stand-by Control-VBE*2) × (*2)/((*1)+(*2))+VBE =(5V-0.6V*2) ×4.3kΩ/(4.3kΩ+1kΩ)+0.6V ≈3.68(V) Stand-by Circuit in Pre Driver IC 4.3k Ω (*2) VST ST-BY PLAY MUTE ST-BY MUTE +5V +5V Stand-by Control Mute Control Ch1 OUT GND +VCC -VCC STK433-700series GND Ch2 IN GND Ch1 IN 33k Ω 2k Ω 1k Ω 33 μF 10k Ω 10k Ω 10k Ω 2.2k Ω VST GND Ch2 OUT Mute Control H: Single Mute L: Normal Stand-by Control(ex) H: Operation Mode(+5V) L: Stand-by Mode(0V) 2 3 4 5 6 7 8 9 10 11 12 13 14 1 15 +VCC Ch1 IN Ch1 NF Ch2 IN Ch2 NF Ch2 OUT Ch1 OUT -VCC SUB/ GND MONITOR +PRE ST-BY Ch1 OUT Ch2 OUT -PRE MONITOR |
유사한 부품 번호 - STK433-730-E |
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유사한 설명 - STK433-730-E |
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