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AK4953AEN Datasheet(PDF) 1 Page - Asahi Kasei Microsystems |
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AK4953AEN Datasheet(HTML) 1 Page - Asahi Kasei Microsystems |
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1 / 99 page  [AK4953A] MS1252-E-05 2015/10 - 1 - GENERAL DESCRIPTION The AK4953A is a low power consumption 24bit stereo CODEC with a microphone, headphone and speaker amplifiers. The input circuits include a microphone amplifier and an ALC (Automatic Level Control) circuit, and the output circuits include a cap-less headphone amplifier and a speaker amplifier. It is suitable for portable application with recording/playback function. The integrated charge pump circuit generates a negative voltage and removes the output AC coupling capacitors. The speaker amplifier has a wide operating voltage range, which is from 0.9V to 5.5V, enabling a direct drive to batteries. The AK4953A is available in a small 36-pin QFN (5x5mm 0.4mm pitch), utilizing less board space than competitive offerings. FEATURES 1. Recording Function Stereo Single-ended input with three Selectors MIC Amplifier (+29dB/+26dB/+23dB/+20dB/+16dB/+12dB/0dB) Digital ALC (Automatic Level Control) (Setting Range: +36dB 54dB, 0.375dB Step) ADC Performance: S/(N+D): 82dB, DR, S/N: 88dB (MIC-Amp=+20dB) S/(N+D): 85dB, DR, S/N: 96dB (MIC-Amp=0dB) Wind-noise Reduction Filter 5 Band Notch Filter Digital MIC Interface 2. Playback Function Digital De-emphasis Filter (tc=50/15s, fs=32kHz, 44.1kHz, 48kHz) Digital ALC (Automatic Level Control) (Setting Range: +36dB ~ 54dB, 0.375dB Step) Digital Volume Control (+12dB ~ 115dB, 0.5dB Step, Mute) Capacitor-less Stereo Headphone Amplifier - HP-Amp Performance: S/(N+D): 80dB@24mW, S/N: 96dB - Output Power: 24mW@16 - Pop Noise Free at Power-ON/OFF Mono Speaker-Amplifier - SPK-Amp Performance: S/(N+D): 70dB@250mW, S/N: 95dB - BTL Output - Output Power: 400mW@8 (SVDD=3.3V) 100mW@8 (SVDD=1.5V) Beep Generator 3. Power Management 4. Master Clock: (1) PLL Mode Frequencies: 11.2896MHz, 12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin) 32fs or 64fs (BICK pin) (2) External Clock Mode Frequencies: 256fs, 384fs, 512fs or 1024fs (MCKI pin) AK4953A 24bit Stereo CODEC with MIC/HP/SPK-AMP |
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