AK4621 Datasheet, PDF (1/41 Pages) Asahi Kasei Microsystems – 24-Bit 192kHz Stereo Audio CODEC

[AK4621]
AK4621
24-Bit 192kHz Stereo Audio CODEC
GENERAL 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.
FEATURES
□ 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
□ μP Interface: 3-wire Serial Interface
□ Master Clock: 128fs/192fs/256fs/384fs/512fs/768fs/1024fs
MS1258-E-01
-1-
2011/01