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LA4613 데이터시트(PDF) 4 Page - Sanyo Semicon Device |
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LA4613 데이터시트(HTML) 4 Page - Sanyo Semicon Device |
4 / 7 page LA4613 No. 6014-4/7 1. Standby switching function (9) Power is switched ON and OFF by controlling the High and Low states at pin 9, respectively (standby). To switch power ON, apply 1.5V or more, or 800 µA to pin 9. • When directly connecting the microcontroller with this pin, add a resistor in series to optimize the current for the microcontroller. 2. Input pins (11,13) Voltage at the input pins is approx. 2 VBE (1.4V). Input impedance is approx. 30 k Ω. • The recommended value for the input capacitor is 0.22 µF, but this can be varied in order to adjust the starting time (ts). (The starting time is the time required from applying voltage to the standby pin until sound output is ob- tained.) 3. Filter (decoupling) pin (7) Pin voltage is approx. 1/2 VCC. The recommended value for the filter capacitor is 100 µF. When capacitance is lower, pop noise when setting the standby pin to Low (power OFF) will increase. Filter capacitor= 100 µF Filter capacitor= 47 µF Current supplied to pin 9 Applied voltage Applied voltage – VBE (approx. 0.7V) 2 k Ω 2 k Ω + Pin Descriptions Input capacitator 1.0 µF 2.2 µF 3.3 µF 4.7 µF 10 µF Starting time t s 0.2s 0.3s 0.5s 0.65s 1.5s 9 To bias circuit VCC 2k Ω 2k Ω AC voltage (100 mV) Output DC voltage AC voltage (200 mV) Output DC voltage A11495 A11496 . = . |
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