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ASAHI KASEI
[AK4640]
AK4640
16-Bit ∆Σ CODEC with MIC/HP/SPK-AMP
GENERAL DESCRIPTION The AK4640 targeted at PDA and other low-power, small size applications. It features a 16bit stereo CODEC with a built-in Microphone-Amplifier, Headphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Auto Level Control) circuit. The AK4640 is available in a smaller 57pin BGA in addition to a 52pin QFN that has compatibility with the AK4534/8, utilizing less board space than competitive offerings.
FEATURES
1. Resolution : 16bits 2. Recording Function
• Mono Input • 2 to 1 Selector (Internal and External MIC) • 1st MIC Amplifier : +20dB or 0dB • 2nd Amplifier with ALC : +27.5dB ∼ −8dB, 0.5dB Step • ADC Performance : S/(N+D) : 79dB, DR, S/N : 83dB 3.
AK4640 Datasheet
