Asahi Kasei Microdevices AK4678
The AK4678 is a 24bit stereo CODEC with a built-in Microphone-Amplifier, Receiver-Amplifier, Mono Class-D Speaker-Amplifier, Cap-less Class-G Headphone-Amplifier and Line-Amplifier. The AK4678 features dual PCM I/F in addition to audio I/F that allows easy interfacing in mobile phone designs with Bluetooth I/F. The playback features also include 5-band Parametric EQ and Dynamic Range Control, therefore the AK4678 can automatically adjust a comfortable volume without distortion and provides great flexibility.GENERAL DESCRIPTION
The AK4678 is available in a 49pin CSP, utilizing less board space than competitive offerings.FEATURES
1. Recording Function (Stereo CODEC)● 4 Stereo Input Selectors
● 4 Stereo Inputs (Single-ended) or 3 Mono Input (Full-differential)
● MIC Amplifier: +24dB ~ 6dB, 3dB step
● 2 Output MIC Power Supplies
● Digital ALC (Automatic Level Control): +36dB ~ 54dB, 0.375dB Step, Mute
● AD