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APA4838 Datasheet(PDF) 5 Page - Anpec Electronics Coropration |
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APA4838 Datasheet(HTML) 5 Page - Anpec Electronics Coropration |
5 / 29 page Copyright ANPEC Electronics Corp. Rev. A.1 - Apr., 2003 APA4838 www.anpec.com.tw 5 APA4838 Symbol Parameter Test Conditions Typ. Unit V OS Output Offset Voltage V IN=0V 5 mV THD=1%, f=1kHz, R L=32Ω 95 P O Output Power THD=10%, f=1kHz, R L=32Ω 110 mW A V= 1 , VOUT=1VRMS, RL=10kΩ, f=1kHz 0.05 % THD+N Total Harmonic Distortion plus Noise P O =75mW, RL=32Ω, AV= 1, f=1kHz 0.07 % PSRR Power Supply Rejection Ratio V RIPPLE=100mVRMS , f=120Hz, CB=2.2µF 52 dB X TALK Channel Separation C B=2.2µF, RL=8Ω , f=1kHz 90 dB SNR Signal-to-Noise Ratio P O =75mW, RL=32Ω, A-Wtd Filter 102 dB V N Output Noise Voltage R L=32Ω, A-Wtd Filter 20 µV Electrical Characteristics (Cont.) Electrical Characteristics for SE Mode Operation (Cont.) The following specifications apply for V DD= 5V unless otherwise noted. Limits apply for T A= 25°C Pin Description Pin Name No I/O Description GND 1, 8, 14, 20, 23 Ground connection for circuitry. Shutdown 2 I Shutdown mode control signal input, place entire IC in shutdown mode when held high, Idd=0.7uA Gain Select 3 I Gain select input pin, logic high will switch the amplifier to external gain mode, and logic low will switch to internal unity gain. Mode 4 I Mode select input pin, fixed gain when logic L and gain adjustable mode when logic H. Mute 5 I Mute control input pin, active H. V DD 6, 16, 27 Supply voltage input pin DC_Vol 7 I Volume control function input pin. Right Dock 9 O Right docking output pin Right In 10 I Right channel audio input pin Beep In 11 I Beep signal input pin Left In 12 I Left channel audio input pin Left Dock 13 O Right docking output pin Left Out + 15 O Left channel positive output pin Left Out - 17 O Left channel negative output pin Left Gain 2 18 Connect pin 2 of the external gain setting resistor for left channel Left Gain 1 19 Connect pin 1 of the external gain setting resistor for left channel HP Sense 21 I Headphone sense control pin |
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