AK4645

ASAHI KASEI [AK4645] AK4645 Stereo CODEC with MIC/HP-AMP GENERAL DESCRIPTION The AK4645 is a stereo CODEC with a built-in Microphone-Amplifier and Headphone-Amplifier. The AK4645 features analog mixing circuits and PLL that allows easy interfacing in mobile phone and portable A/V player designs. The AK4645 is available in a 32pin QFN, utilizing less board space than competitive offerings. FEATURES 1. Recording Function 4 Stereo Input Selector 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 Programmable EQ 2. Playback Function Digital De-emphasis Filter (tc=50/15µs, fs=32kHz, 44.1kHz, 48kHz) Bass Boost Soft Mute Digital Volume (+12dB ...