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 |
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- 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
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- 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
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Applications |
- AV Receivers
- CD/SACD players
- Network audios
- USB DACs
- USB headphones
- Sound plates/bars
- Car audios
- Automotive external amplifiers
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- Measurement equipment
- Control systems
- Public audios (PA)
- Smart phones
- IC-Recorders
- Bluetooth headphones
- HD audio/voice conference systems
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