• pic_02

    Cart
  • pic_02

    Login

    AK4954AEN-L

    The AK4954A is a low power consumption 32-bit stereo CODEC with a microphone, a headphone and a
    speaker amplifiers. The input circuits include a microphone amplifier and an ALC (Automatic Level
    Control) circuit, and the output circuits include a cap-less headphone amplifier and a speaker amplifier.
    It is suitable for portable application with recording/playback function. The integrated charge pump circuit
    generates a negative voltage and removes the output AC coupling capacitors. The speaker amplifier has
    a wide operating voltage range, which is from 0.9V to 5.5V, enabling a direct drive to batteries. The
    AK4954A is available in a small 32-pin QFN (4x4mm 0.4mm pitch), utilizing less board space than
    competitive offerings.

    Category:

    Download Details PDF
    Notice:

    In stock will ship in 2 days. Real-time inventory pls confirm with us.

    INQUIRY ONLINE




      SPECIFICATION

      1. Recording Function
      • Two Low Noise Microphone Power Supplies
      • Stereo Single-ended input with three Selectors
      • Low Noise Microphone Amplifier (+26dB/+20dB/+13dB/+6dB/0dB)
      • Digital ALC (Automatic Level Control)
      (Setting Range: +36dB  52.5dB, 0.375dB Step)
      • ADC Performance: S/(N+D): 88dB, DR, S/N: 97dB (Microphone Amplifier =+20dB)
      S/(N+D): 88dB, DR, S/N: 100dB (Microphone Amplifier =0dB)
      • Two Types of Decimation Filters
      • Overflow Detection
      • Wind-noise Reduction Filter
      • Stereo Separation Emphasis Circuit
      • 5-band Notch Filter
      • Digital Microphone Interface
      2. Playback Function
      • Digital ALC (Automatic Level Control)
      (Setting Range: +36dB ~ 52.5dB, 0.375dB Step)
      • 3-band Dynamic Range Control Circuit
      • Digital Volume Control (+6dB ~ 65.5dB, 0.5dB Step, Mute)
      • Capacitor-less Stereo Headphone Amplifier
      – HP-Amplifier Performance: S/(N+D): 65dB@20mW, S/N: 100dB
      – Output Power: 20mW@16
      – Pop Noise Free at Power-ON/OFF
      • Mono Speaker-Amplifier (with Stereo Line Output Switch)
      – SPK-Amplifier Performance: S/(N+D): 70dB@250mW
      Output Noise Level: -97dBV
      – BTL Output
      – Output Power: 400mW@8 (SVDD=3.3V)
      100mW@8 (SVDD=1.5V)
      • Beep Generator
      3. Power Management

      4. Master Clock:
      (1) PLL Mode
      • Frequencies: 11.2896MHz, 12MHz, 12.288MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)
      32fs or 64fs (BICK pin)
      (2) External Clock Mode
      • Frequencies: 256fs, 384fs, 512fs or 1024fs (MCKI pin)
      5. Sampling Frequencies
      • PLL Slave Mode (BICK pin): 8kHz  96kHz
      • PLL Master Mode: 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz,
      44.1kHz, 48kHz, 64kHz, 88.2kHz, 96kHz
      • EXT Master/Slave Mode: 8kHz ~ 96kHz (256fs), 8kHz ~ 48kHz (384fs),
      8kHz ~ 48kHz (512fs), 8kHz ~ 12kHz (1024fs)
      6. Master/Slave mode
      7. Audio Interface Format: MSB First, 2’s complement
      • ADC: 16/24/32-bit MSB justified, 16/24/32-bit I
      2S
      • DAC: 16/24/32-bit MSB justified, 16/24-bit LSB justified, 16/24/32-bit I2S
      8. Serial P I/F: I
      2C Bus (Ver 1.0, 400kHz Fast-Mode)
      9. Ta = 30  85C
      10. Power Supply:
      • Analog Power Supply (AVDD): 2.5 ~ 3.5V
      • Digital Power Supply (DVDD): 1.6 ~ 1.98V
      • Digital I/O Power Supply (TVDD): 1.6 or (DVDD-0.2) ~ 3.5V
      • Speaker Power Supply (SVDD): 0.9 ~ 5.5V
      11. Package: 32-pin QFN (4 x 4mm, 0.4mm pitch)