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AK4649 Datasheet(PDF) 1 Page - Asahi Kasei Microsystems |
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AK4649 Datasheet(HTML) 1 Page - Asahi Kasei Microsystems |
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1 / 96 page  [AK4649] MS1023-E-01 2010/08 - 1 - GENERAL DESCRIPTION The AK4649 features a stereo CODEC with a built-in Microphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit, and Output circuits include a Speaker-Amplifier. These circuits are suitable for portable application with recording/playback function. The AK4649 is available in a 29pin CSP (3x3.3mm 0.5mm pitch), utilizing less board space than competitive offerings. FEATURES 1. Recording Function • Stereo Single-ended input with two Selector • MIC Amplifier (+29dB/+26dB/+23dB/+20dB/+16dB/+12dB/+9dB/+6dB/+3dB/0dB) • Digital ALC (Automatic Level Control) - Setting Range: +36dB ∼ −54dB, 0.375dB Step - Noise Suppression • ADC Performance: S/(N+D): 80dB, DR, S/N: 89dB (MIC-Amp=+20dB, AVDD=3.3V) S/(N+D): 80dB, DR, S/N: 100dB (MIC-Amp=0dB, AVDD=3.3V) • Wind-noise Reduction Filter • 5 Band Notch Filter • Stereo Separation Emphasis • Digital MIC Interface 2. Playback Function • Digital De-emphasis Filter (tc=50/15μs, fs=32kHz, 44.1kHz, 48kHz) • Digital ALC (Automatic Level Control) - Setting Range: +36dB ∼ −54dB, 0.375dB Step - Noise Suppression • Digital Volume Control: - 0dB ∼ −18dB, 6dB Step & 256 Linear Step (+0dB ∼ - 48.13dB & Mute) • Stereo Separation Emphasis • Stereo Line Output - S/(N+D): 87dB, S/N: 97dB • Mono Speaker-Amp - SPK-AMP Performance: S/(N+D): 60dB@150mW, S/N: 98dB - BTL Output - Output Power: 400mW@8 Ω (SVDD=3.3V) • Analog Mixing: Mono Input 3. Power Management 4. Master Clock: (1) PLL Mode • Frequencies: 11.2896MHz, 12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin) 1fs (LRCK pin) 32fs or 64fs (BICK pin) (2) External Clock Mode • Frequencies: 256fs, 512fs or 1024fs (MCKI pin) 5. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs • PLL Slave Mode (LRCK pin): 7.35kHz ∼ 48kHz • PLL Slave Mode (BICK pin): 7.35kHz ∼ 48kHz • PLL Slave Mode (MCKI pin): 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz 24bit Stereo CODEC with MIC/SPK-AMP AK4649 |
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