AK4490EQ 32-Bit 2ch DAC

By AKM Semiconductor Inc 53

AK4490EQ 32-Bit 2ch DAC

The AK4490 from AKM is a new generation premium 32-bit 2ch DAC with new technologies, achieving the industry's leading level low-distortion characteristics and wide dynamic range. The AK4490 integrates a newly developed switched capacitor filter "OSR Doubler", making it capable of supporting a wide range signals and achieving low out-of-band noise while realizing low power consumption. Moreover, the AK4490 has five types of 32-bit digital filters, realizing simple and flexible sound tuning in wide range of applications. The AK4490 accepts up to 768 kHz PCM data and 11.2 MHz DSD data, ideal for a high-resolution audio source playback that is becoming widespread in network audios, USB-DACs and car audio systems.

Features
  • 256x over-sampling
  • Sampling rate: 30 kHz ~ 768 kHz
  • 32 Bit 8x digital filter
    • Ripple: ±0.005 dB, Attenuation: 100 dB
    • Short delay sharp roll-off, GD=6.25/fs
    • Short delay slow roll-off, GD=5.3/fs
    • Sharp roll-off
    • Slow roll-off
    • Super-slow roll-off
  • High tolerance to clock jitter
  • Low distortion differential output
  • 2.8 MHz, 5.6 MHz, 11.2 MHz DSD input support
    • Filter (fc=50 kHz, fc=150 kHz 2.8 MHz mode)
    • Filter bypass mode
  • Digital de-emphasis for 32, 44.1, 48 kHz sampling
  • Mono mode
  • External digital filter mode
  • THD+N: -112 dB
  • DR, S/N: 120 dB (Mono mode, 123 dB)
  • I/F format: 24/32-bit MSB justified, 16-/20-/24-/32-bit LSB justified, I2S, DSD
  • Master clock:
    • 30 kHz ~ 32 kHz: 1152 fs
    • 30 kHz ~ 54 kHz: 512 fs or 768 fs
    • 30 kHz ~ 108 kHz: 256 fs or 384 fs
    • 108 kHz ~ 216 kHz: 128 fs or 192 fs
      • ~ 384 kHz: 64 fs or 128 fs
      • ~ 768 kHz: 64 fs
  • Power supply: DVDD = AVDD = 3.0 ~ 3.6 V, VDD 1/2 = 4.75 ~ 5.25 V
  • Digital input level: CMOS
  • Package: 48-pin LQFP
Applications
  • AV Receivers
  • CD/SACD players
  • Network audios
  • USB DACs
  • USB headphones
  • Sound plates/bars
  • Car audios
  • Automotive external amplifiers
  • Measurement equipment
  • Control systems
  • Public audios (PA)
  • Smart phones
  • IC-Recorders
  • Bluetooth headphones
  • HD audio/voice conference systems

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AK4490EQ

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