Asahi Kasei Microdevices AK4497SVQ 129dB 2-Channel Stereo Premium DAC
Asahi Kasei Microdevices AK4497SVQ 129dB 2-Channel Stereo Premium Digital-to-Analog Converter (DAC) is a premium device that exemplifies VELVETSOUND™ technology, delivering high-fidelity audio with remarkable precision. Designed for high-end audio applications, the AK4497SVQ supports up to 768kHz/32-bit PCM and DSD512 input formats, ensuring accurate reproduction of high-resolution audio sources. The Asahi Kasei Microdevices AK4497SVQ features a switched capacitor filter voltage output and six selectable digital filters, allowing for flexible sound tuning across various use cases.
With a signal-to-noise ratio of up to 129dB (133dB in mono mode) and total harmonic distortion plus noise as low as -117dB, this DAC achieves exceptional clarity and dynamic range. The AK4497SVQ also incorporates Data Weighted Averaging (DWA) routing technology to minimize conversion element variation, enhancing analog performance. Automotive-grade compliance further broadens applicability, making the AK4497SVQ ideal for luxury car audio systems, in addition to network audio, USB DACs, and professional audio gear.
Features
- Enhanced analog performance
- Seamless high-resolution audio playback
- Automotive qualification compliance
- Superior sound quality
- THD+N: -117dB (2VRMS), -113dB (2.6VRMS)
- DR, S/N: 129dB (2VRMS), 131dB (2.6VRMS), 133dB (mono mode, 2.6VRMS)
- 256 times over sampling
- Audio I/F format
- 24/32-bit MSB justified
- 16/20/24/32-bit LSB justified
- 16/24/32-bit I2S compatible
- TDM128/256/512
- DSD64/128/256/512
- External Digital Filter (EXDF) interface
- Sampling frequency
- 30kHz to 768kHz for PCM
- 384kHz and 768kHz for EXDF
- 2.8MHz, 5.6MHz, 11.2MHz, and 22.4MHz for DSD
- 32-bit 8x Digital filter
- Short delay, sharp roll-off, group delay = 6.0/fs,
- Short delay, slow roll-off, group delay = 5.0/fs
- Sharp roll-off
- Slow roll-off
- Low dispersion short delay filter, group delay = 10.0/fs
- Super slow roll-off
- DSD filter
- Filter1 (fc = 39kHz, DSD64 mode)
- Filter2 (fc = 76kHz, DSD64 mode)
- Digital de-emphasis for 32kHz, 44.1kHz, and 48kHz sampling
- Soft mute
- Digital attenuator (0dB to -127dB in 0.5dB steps and mute)
- Mono mode
- Master clock (PCM mode)
- fs = 30kHz to 32kHz : 256fs, 384fs, 512fs, 768fs, and 1152fs
- fs = 32kHz to 54kHz : 256fs, 384fs, 512fs, and 768fs
- fs = 54kHz to 108kHz : 256fs and 384fs
- fs = 108kHz to 216kHz : 128fs and 192fs
- fs = 216kHz to 388kHz : 32fs, 48fs, 64fs, and 96fs
- fs = 388kHz to 776kHz : 16fs, 32fs, 48fs, and 64fs
- Operation control - register control by 3-wire serial or I2C-bus, pin control
- CMOS digital input level
- Power supply
- Using an internal LDO for digital core (DVDD)
- 3.0V to 3.6V for TVDD and AVDD
- 4.75V to 5.25V for VDDL and VDDR
- Using an external supply for digital core (DVDD)
- 1.7V to 1.98V for DVDD
- DVDD to 3.6V for TVDD and AVDD
- 4.75V to 5.25V for VDDL and VDDR
- Using an internal LDO for digital core (DVDD)
- -40°C to +105°C operating temperature range
- 64-pin HTQFP package, 10mm x 10mm mold size, 0.5mm pin pitch
Applications
- Network audio and USB DACs
- USB and BLUETOOTH® headphones
- CD/SACD players
- Wireless speaker systems
- Soundbars
- Digital audio players
- Electronic musical instruments
- Audio interfaces
- Digital mixers
- AV receivers
- Measurement equipment
- Control systems
- HD audio/voice conference systems
- Public Address (PA)
- Luxury car audio systems
Block Diagram
Application Note
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發佈日期: 2025-05-14
| 更新日期: 2025-07-31