la4802t Sanyo Semiconductor Corporation, la4802t Datasheet
la4802t
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la4802t Summary of contents
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... Ordering number : ENN6657 Overview The LA4802T is a headphone stereo power amplifier for portable CD and MD players. It features a high signal-to- noise ratio, a high ripple rejection ratio, low distortion, and low current drain. Functions • Headphone stereo power amplifier • Power switch • Muting switch • ...
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... Output noise voltage Crosstalk Ripple rejection ratio Switch Threshold Voltages and Pin Influx Currents • Standby switch (pin 1) 120 100 • Mute switch (pin 20), boost switch (pin LA4802T Symbol Conditions 2 kHz ...
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... This function can be turned on or off from pin 4. When used as a line output, the load will be less than 16 , and the bass frequency characteristics will be somewhat increased. Therefore we recommend leaving the bass compensation circuit off in this case. + Output pin Load terminal A13554 LA4802T = 2.4 Vp-p. When the muting function is off, the IN Off time ...
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... Pre GND MUTE Vref C5 OUT Vref C6 OUT Beep 0.1 F R.F C8 OUT + 10 4 Package : MSOP-20 LA4802T 10k 10k A Boost SW 10k 10k B Vref A Vref B Beep R.F Vcc OFF OUT A C18 + 19 C17 220 F 0 BST NF ...
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... Output capacitors. Low band attenuation increases with lower capacitances. • Smoothing resistor for the boost switch on/off transition. Note that using a smaller value will increase the idling current when the boost switch is off. • R2, R3 (10 ) Output oscillation prevention resistors. LA4802T No. 6657-5/10 ...
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... Pre GND MUTE Vref OUT A 7 Vref OUT Beep 0.1 F R.F OUT + 10 4 Package : MSOP-20 LA4802T 10k 10k A Boost SW 10k 10k B Vref A Vref B Beep R.F Vcc OFF OUT 220 F 0.1mF 16 10 BST NF A ...
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... BOOST SW • 0.5 V: Boost on • 1.4 to 4.5 V: Boost off • Connection for the mute switch on/off 6 MUTE C 1.27 impulse noise reduction capacitor 7 V OUT • V 1.21 REF REF 8 LA4802T Pin description amplifier reference Equivalent circuit 1 20k A13730 10k A13731 4 300 A13732 10k 6 300 ...
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... Ripple filter reference V CONT C • 1.21 REF REF • Connection for the bass compensation 1.33 circuit switch on/off impulse noise reduction capacitor LA4802T Pin description 9 10 amplifier reference Equivalent circuit 300 300 2.5k 2.5k A13735 300 A13736 12k 300 45k 11 ...
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... The amount of bass boost depends on the 18 capacitance used. 16 POWER OUT 1.23 • Power outputs 19 • Muting on/off switch 20 MUTE SW • 0.5 V: Muting off • 1.4 to 4.5 V: Muting on LA4802T Pin description PWR Equivalent circuit 75k 40k 10k A13740 PWR OUT ...
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... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of July, 2002. Specifications and information herein are subject to change without notice. LA4802T PS No. 6657-10/10 ...