AK4621EF

115dB 192kHz 24-Bit 2ch ADC & 2ch DAC with Low Latency Digital Filter

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Description

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.

Key Features

・ 24-bit 2-channel ADC

- Full Differential Inputs

- Selectable Digital Filter

1. ADC Sharp Roll Off Filter (GD=39/fs)

Passband: 0 to 21.8kHz (@fs=48kHz)

Stopband Attenuation: 100dB

2. ADC Short Delay Sharp Roll Off Filter (GD=14/fs)

Passband: 0 to 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 to 21.8kHz (@fs=48kHz)

Stopband Attenuation: 70dB

2. DAC Slow Roll Off Filter (GD=27/fs)

Passband: 0 to 8.9kHz (@fs=48kHz)

Stopband Attenuation: 73dB

3. DAC Short Delay Sharp Roll Off Filter (GD=7/fs)

Passband: 0 to 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 to – 72dB, Linear 256 + 16steps

- Zero Detection Function

- Audio Interface Format: MSB justified, LSB justified, I2S

・ High Jitter Tolerance

・ Sampling Rate: 32kHz to 216kHz

・ µP Interface: 3-wire Serial Interface

・ Master Clock: 128fs/192fs/256fs/384fs/512fs/768fs/1024fs

・ Power Supply

Analog: 4.75 to 5.25V (typ. 5.0V)

Digital: 3.0 to 3.6V (typ. 3.3V)

Digital I/O: DVDD to 5.25V (typ. 5.0V)

・ Package: 30pin VSOP

・ Ta: -10 to 70°C

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