AK4642

ASAHI KASEI [AK4642] 16-Bit ∆Σ Stereo CODEC with MIC/HP/SPK-AMP GENERAL DESCRIPTION The AK4642 features a 16-bit stereo CODEC with a built-in Microphone-Amplifier, Headphone-Amplifier and Speaker-Amplifier. Input circuits include a Micr ophone-Amplifier and an ALC (Auto Level Control) circuit that is suitable for portable application with recording/playback function. The AK4642 is available in a 32pin QFN, utilizing less board space than competitive offerings. FEATURES 1. Resolution: 16bits 2. Recording Function Stereo Mic Input (Full-differential or Single-ended) Stereo Line Input MIC Amplifier (+32dB/+26dB/+20dB or 0dB) Digital ALC (Automatic Level Control) (+36dB ∼ −54dB, 0.375dB Step, Mute) ADC Performance: S/(N+D): 83dB, DR, S/N: 86dB (MIC-Amp=+20dB) S/(N+D): 88dB, DR, S/N: 95dB (MIC-Amp=0dB) Wind-noise Reduction Filter Stereo Separation Emphasis 3. Playback Function Digital De-emphasis Filter (tc=50/15µs, fs=32kHz, 44.1kHz, 48kHz) Digital Volume (+12dB ∼ −115.0dB, 0.5dB Step, Mute) Digital ALC (Automatic Level Control) (+36dB ∼ −54dB, 0.375dB Step, Mute) Stereo Separation Emphasis Stereo Line Output - Performance: S/(N+D): 88dB, S/N: 92dB Stereo Headphone-Amp - S/(N+D): 70dB, S/N: 90dB - Output Power: 15mW@16Ω (HVDD=3.3V) - Pop Noise Free at Power ON/OFF Mono Speaker-Amp - S/(N+D): 50dB@240mW, S/N: 90dB - BTL Output - Availbable for both Dynamic and Piezo Speaker - Output Power: 400mW@8Ω (HVDD=3.3V) 3.0Vrms@50Ω (HVDD=5V) Beep Input 4. Pow...