The AK4649 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 AK4649 is available in a 29pin CSP (3x3.3mm 0.5mm pitch), utilizing less board space than competitive offerings.

1. Applications: Digital Still Camera(DSC), Digital Video Camera(DVC), Security Camera
2. Recording Function
   · Stereo Single-ended input with two Selectors
   · MIC Amplifier
   (+29dB/+26dB/+23dB/+20dB/+16dB/+12dB/+9dB/+6dB/+3dB/0dB)
   · Digital ALC (Automatic Level Control)
   - Setting Range: +36dB ~ -54dB, 0.375dB Step
   - Noise Suppression
   · ADC Performance: S/(N+D): 80dB, DR, S/N: 89dB (MIC-Amp=+20dB, AVDD=3.3V)
   S/(N+D): 80dB, DR, S/N: 100dB (MIC-Amp=0dB, AVDD=3.3V)
   · Wind-noise Reduction Filter
   · 5 Band Notch Filter
   · Stereo Separation Emphasis
   · Digital MIC Interface
3. Playback Function
   · Digital De-emphasis Filter (tc=50/15µs, fs=32kHz, 44.1kHz, 48kHz) fs=32kHz, 44.1kHz, 48kHz)
   · Digital ALC (Automatic Level Control)
   - Setting Range: +36dB ~ -54dB, 0.375dB Step
   - Noise Suppression
   · Digital Volume Control:
   - 0dB ~ -18dB, 6dB Step & 256 Linear Step (+0dB ~ - 48.13dB & Mute)
   · Stereo Separation Emphasis
   · Stereo Stereo Line Output
   - S/(N+D): 87dB, S/N: 97dB
   · Mono Speaker-Amp
   - SSPK-AMP Performance: S/(N+D): 60dB@150mW, S/N: 98dB
   - BTL Output
   - Output Power: 400mW@8 (SVDD=3.3V)
   · Analog Mixing: Mono Input
4. Power Management
5. 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)
6. Output Master Clock Frequencies: 32fs/64fs/128fs/256fs
   · PLL Slave Mode (LRCK pin): 7.35kHz ~ 48kHz
   · PLL Slave Mode (BICK pin): 7.35kHz ~ 48kHz
   · PLL Slave Mode (MCKI pin):
   8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz
   · PLL Master Mode:
   8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz
   · EXT Master/Slave Mode:
   7.35kHz ~ 48kHz (256fs), 7.35kHz ~ 26kHz (512fs), 7.35kHz ~ 13kHz (1024fs)
7. P I/F: 3-wire Serial, I²C Bus (Ver 1.0, 400kHz Fast-Mode)
8. Master/Slave mode
9. Audio Interface Format: MSB First, 2’s complement
   · ADC: 24bit MSB justified, 16/24bit I²S
   · DAC: 24bit MSB justified, 16bit LSB justified, 24bit LSB justified, 16/24bit I²S
10. Ta = -30 ~ 85°C
11. Power Supply:
    · Analog Power Supply (AVDD): 2.4 ~ 3.6V
    · Digital Power Supply (DVDD): 1.6 ~ 3.6V
    · Speaker Power Supply (SVDD): 2.4 ~ 3.6V
12. Package : 29pin CSP (3 x 3.3mm, 0.5mm pitch)
13. Register Compatible with the AK4646
14. Evaluation Board: AKD4649