Asahi Kasei Microdevices AK4644
The AK4644 is a stereo CODEC with a built-in Microphone-Amplifier, Headphone-Amplifier and Receiver-Amplifier. The AK4644 features analog mixing circuits and PLL that allows easy interfacing in mobile phone and portable A/V player designs. The AK4644 is available in a 32pin QFN, utilizing less board space than competitive offerings.| Part No. | AK4644 |
|---|---|
| Datasheet | AK4644 Download |
| Manufacturer |  Asahi Kasei Microdevices |
| Description | Stereo CODEC |
| Buy | Stock & Price |
GENERAL DESCRIPTION
FEATURES
1. Recording Function● 3 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 ∼ −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
● Mono Receiver-Amp - BTL Output - Output Power: 30mW@32Ω (AVDD=3.3V)
● Stereo Headphone-Amp - S/(N+D): 70dB@7.5mW, S/N: 90dB - Output Power: 70mW@16Ω (HVDD=5V), 62mW@16Ω (HVDD=3.3V) - Pop Noise Free at Power ON/OFF
● Analog Mixing: 3 Stereo Input 3.
