Asahi Kasei Microdevices AK4636
The AK4636 is a 16-bit mono CODEC with Microphone-Amplifier, Speaker-Amplifier and VideoAmplifier. The AK4636 suits a video recording/playback system of Digital Still Cameras. The AK4636 is housed in a space-saving 29-pin CSP 2.5mm x 3.0mm package (AK4636ECB) or a 32pin QFN 4.0mm x 4.0mm package (AK4636EN).GENERAL DESCRIPTION
Input circuits include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit. Output circuits include a Speaker-Amplifier and Mono Line Output. Video circuits include a LPF and Video-Amplifier. FEATURE 1. 16-Bit Delta-Sigma Mono CODEC 2. Recording Function● 1ch Mono Input
● MIC Amplifier: (0dB/+3dB/+6dB/+10dB/ +17dB/+20dB/+23dB/+26dB/+29dB/+32dB)
● Digital ALC (Automatic Level Control) - Output Noise Suppression - Setting Rate (+36dB ∼ -54dB, 0.375dB Step, Mute)
● ADC Performance (MIC-Amp=+20dB) - S/(N+D): 83dB - DR, S/N: 85dB
● Wind-noise Reduction Filter
● 5 band notch Filter
● Digital Microphone Interface 3. Playback Function
● Digital ALC (Automatic Level Control) - Output Noise Suppression - Setting Rate (+36dB ∼ -54dB, 0.375dB Step, Mute)
● Mono Line Output: - S/(N+D): 84dB - S/N: 90dB
● Mono Speaker-Amp - S/(N+D): 60dB (150mW@8Ω) - BTL Output - Output Power: 400mW @ 8Ω (SVDD=3.3V)
● Beep Generator 4. Video Function
● A Composite Video Input
● Gain Control (-1.0dB ∼ +10.5dB, 0.5dB Step)
● Low Pass Filter
● A Video-Amp for Composite Video Signal
● DC Direct Output 5.