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DIGITAL AUDIO and MULTIMEDIA SOUND CODECs
AK4646
Low Power 2ch ADC & 2ch DAC with ALC/Eq and MIC/SPK-Amp
The AK4646 features a stereo CODEC with a built-in Microphone-Amplifier and Speaker-Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Auto Level Control) circuit, and Output circuits include a Speaker-Amplifier. These circuits are suitable for portable application with recording/playback function. The AK4646 is available in a small 32pin QFN (5mmx5mm: AK4646EN, 4mmx4mm: AK4646EZ), utilizing less board space than competitive offerings.
AK4646
  1. Applications: Digital still camera, Digital video camera
  2. Recording Function
    · Stereo Mic Input (Full-differential or Single-ended)
    · Stereo Line Input
    · MIC Amplifier (+32dB/+29dB/+26dB/+23dB/+20dB/+17dB/+10dB/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
    · 5 Band Notch Filter
    · Stereo Separation Emphasis
  3. Playback Function
    · Digital De-emphasis Filter (tc=50/15micros, fs=32kHz, 44.1kHz, 48kHz)
    · 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 Speaker-Amp
    - S/(N+D): 60dB@150mW, S/N: 90dB
    - BTL Output
    - Available for both Dynamic and Piezo Speaker
    - Output Power: 400mW@8omega (SVDD=3.3V)
    · Analog Mixing: Mono Input
  4. Power Management
  5. Master Clock:
    (1) PLL Mode
    · Frequencies:
    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
  7. Sampling Rate:
    · 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 Slave Mode:
    7.35kHz ~ 48kHz (256fs), 7.35kHz ~ 26kHz (512fs), 7.35kHz ~ 13kHz (1024fs)
  8. microP I/F: 3-wire Serial
  9. Master/Slave mode
  10. Audio Interface Format: MSB First, 2’s compliment
    · ADC: 16bit MSB justified, I2S
    · DAC: 16bit MSB justified, 16bit LSB justified, 16-24bit I2S
  11. Ta = -30 ~ 85°C
  12. Power Supply:
    · AVDD: 2.2 ~ 3.6V (typ. 3.3V)
    · DVDD: 1.6 ~ 3.6V (typ. 3.3V)
    · SVDD: 2.2 ~ 4.0 V (typ. 3.3V)
  13. Power supply Current: 19mA
  14. Package: 32pin QFN, 5mm x 5mm, 0.5mm pitch (AK4646EN)
    32pin QFN, 4mm x 4mm, 0.4mm pitch (AK4646EZ)
  15. Pin/Register Compatible with AK4642EN/AK4643EN (AK4646EN)
  16. Evaluation Board: AKD4646
PDF
Download		 PDF Data Sheets
Rev. MS0557-E-05 2011/01
PDF : 726KB / 81pages		 PDF Evaluation Board Manual
Rev. KM084101 2006/08
PDF : 572KB / 30pages
AK4646 BLOCK DIAGRAM

AK4646 BLOCK DIAGRAM

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