AK4649VN
AK4649VN is 24bit Stereo CODEC manufactured by Asahi Kasei Microdevices.
DESCRIPTION
The AK4649VN features a stereo CODEC with a built-in Microphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit, and Output circuits include a Speaker-Amplifier. These circuits are suitable for portable application with recording/playback function. The AK4649VN is available in 32pin QFN(5x5mm 0.5mm pitch) utilizing less board space than petitive offerings.
FEATURES
1. Recording Function
- Stereo Single-ended input with two Selectors
- MIC Amplifier (+29d B/+26d B/+23d B/+20d B/+16d B/+12d B/+9d B/+6d B/+3d B/0d B)
- Digital ALC (Automatic Level Control)
- Setting Range: +36d B ∼
- 54d B, 0.375d B Step
- Noise Suppression
- ADC Performance: S/(N+D): 80d B, DR, S/N: 89d B (MIC-Amp=+20d B, AVDD=3.3V) S/(N+D): 80d B, DR, S/N: 100d B (MIC-Amp=0d B, AVDD=3.3V)
- Wind-noise Reduction Filter
- 5 Band Notch Filter
- Stereo Separation Emphasis
- Digital MIC Interface
2. Playback Function
- Digital De-emphasis Filter (tc=50/15μs, fs=32k Hz, 44.1k Hz, 48k Hz)
- Digital ALC (Automatic Level Control)
- Setting Range: +36d B ∼
- 54d B, 0.375d B Step
- Noise Suppression
- Digital Volume Control:
- 0d B ∼
- 18d B, 6d B Step & 256 Linear Step (+0d B ∼
- 48.13d B & Mute)
- Stereo Separation Emphasis
- Stereo Line Output
- S/(N+D): 87d B, S/N: 97d B
- Mono Speaker-Amp
- SPK-AMP Performance: S/(N+D): 60d B@150m W, S/N: 98d B
- BTL Output
- Output Power: 400m W@8Ω (SVDD=3.3V)
- Analog Mixing: Mono Input
3. Power Management 4. Master Clock:
(1) PLL Mode
- Frequencies: 11.2896MHz, 12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)
1fs (LRCK pin) 32fs or 64fs (BICK pin) (2) External Clock Mode
- Frequencies: 256fs, 512fs or 1024fs (MCKI pin) 5. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs
- PLL Slave Mode (LRCK pin): 7.35k Hz ∼ 48k Hz
- PLL Slave Mode (BICK pin): 7.35k Hz ∼ 48k...
