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DIGITAL AUDIO and MULTIMEDIA SOUND CODECs
AK4647
2ch ADC & 2ch DAC with PLL and MIC/HP-Amp
The AK4647 features a stereo CODEC with a built-in Microphone-Amplifier and Headphone-Amplifier. Built-in PLL circuit supports an easy interface with variable systems. The AK4647 is available in a 48pin LQFP, which is easy to mount on PC board and suitable for automotive application.
  1. Application: Automotive
  2. Recording Function
    · 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
  3. Playback Function
    · Digital De-emphasis Filter (tc=50/15micros, 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
    · Stereo Headphone-Amp
    - S/(N+D): 70dB, S/N: 90dB
    - Output Power: 62mW@16omega (HVDD=3.3V)
    - Pop Noise Free at Power ON/OFF
    · Analog Mixing: Mono Input
  4. Power Management
  5. Master Clock:
    (1) PLL Mode
    · Frequencies:
    11.2896MHz, 12MHz, 12.288MHz, 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, I2C Bus (Ver 1.0, 400kHz High Speed Mode)
  9. Master/Slave mode
  10. Audio Interface Format: MSB First, 2’s complement
    · ADC : 16bit MSB justified, I2S
    · DAC : 16bit MSB justified, 16bit LSB justified, 16-24bit I2S
  11. Ta = -40 ~ 85°C
  12. Power Supply:
    · AVDD, DVDD: 2.6 ~ 3.6V (typ. 3.3V)
    · HVDD: 2.6 ~ 5.25V (typ. 3.3V/5.0V)
  13. Package: 48pin LQFP
  14. Evaluation board: AKD4647
PDF
Download		 PDF Data Sheets
Rev. MS0566-E-00 2006/11
PDF : 543KB / 72pages		    
AK4647 BLOCK DIAGRAM

AK4647 BLOCK DIAGRAM

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