The AK4621 is a high performance 24-bit CODEC that supports up to 192kHz recording and playback. The on-board analog-to-digital converter has a high dynamic range due to AKM’s Enhanced Dual-Bit architecture. The DAC utilizes AKM’s Advanced Multi-Bit architecture that achieves low out-of-band noise and high jitter tolerance through the use of Switched Capacitor Filter (SCF) technology. The AK4621 is ideal for Pro Audio sound cards, Digital Audio Workstations, DVD-R, hard disk, CD-R recording/playback systems, and musical instrument recording.

• Applications: Professional Sound Cards, DVTRs, Electronic Music Instruments
• 24-bit 2-channel ADC
  - Full Differential Inputs
  - Selectable Digital Filter
  1. ADC Sharp Roll Off Filter (GD=39/fs)
  Passband: 0 ~ 21.8kHz (@fs=48kHz)
  Stopband Attenuation: 100dB
  2. ADC Short Delay Sharp Roll Off Filter (GD=14/fs)
  Passband: 0 ~ 21.7kHz (@fs=48kHz)
  Stopband Attenuation: 80dB
  - S/(N+D): 102dB
  - S/N: 115dB
  - Digital High-pass Filter for Offset Cancellation
  - Overflow Flag
  - Audio Interface Format: MSB justified or I²S
• 24-bit 2-channel DAC
  - Selectable Digital Filter
  1. DAC Sharp Roll Off Filter (GD=27/fs)
  Passband: 0 ~ 21.8kHz (@fs=48kHz)
  Stopband Attenuation: 70dB
  2. DAC Slow Roll Off Filter (GD=27/fs)
  Passband: 0 ~ 8.9kHz (@fs=48kHz)
  Stopband Attenuation: 73dB
  3. DAC Short Delay Sharp Roll Off Filter (GD=7/fs)
  Passband: 0 ~ 21.8kHz (@fs=48kHz)
  Stopband Attenuation: 70dB
  - Switched-cap Low Pass Filter
  - Differential Outputs
  - S/(N+D): 100dB
  - S/N: 115dB
  - De-emphasis for 32kHz, 44.1kHz, 48kHz Sampling
  - Output Digital Attenuator: 0dB ~ – 72dB, Linear 256 + 16steps
  - Zero Detection Function
  - Audio Interface Format: MSB justified, LSB justified, I²S
• High Jitter Tolerance
• Sampling Rate: 32kHz ~ 216kHz
• P Interface: 3-wire Serial Interface
• Master Clock: 128fs/192fs/256fs/384fs/512fs/768fs/1024fs
• Power Supply
  Analog: 4.75 ~ 5.25V (typ. 5.0V)
  Digital: 3.0 ~ 3.6V (typ. 3.3V)
  Digital I/O: DVDD ~ 5.25V (typ. 5.0V)
• Package: 30pin VSOP
• Ta: -10 ~ 70 °C
• Evaluation Board: AKD4621