Datasheet > AK4490E

AK4490E

更新时间： 2024-11-04 12:56:43

品牌	Logo	应用领域
AKM		解码器
页数	文件大小	规格书
68页	2049K
描述
32BIT的DAC解码器

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AK4490E 数据手册

[AK4490]

AK4490

Premium 32-Bit 2ch DAC

1. General Description

AK4490 is a new generation Premium 32-bit 2ch DAC with new technologies, achieving 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 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 768kHz PCM data and 11.2MHz DSD data, ideal for a high-resolution audio source

playback that are becoming widespread in network audios, USB-DACs and Car Audio Systems.

Application: AV Receivers, CD/SACD player, Network Audios, USB DACs, USB Headphones, Sound

Plates/Bars, Car Audios, Automotive External Amplifiers, Measurement Equipment, Control

Systems, Public Audios (PA), Smart Cellular Phones, IC-Recorders, Bluetooth Headphones, HD

Audio/Voice Conference Systems

2. Features

 256x Over sampling

 Sampling Rate: 30kHz  768kHz

 32-bit 8x Digital Filter

- Ripple: 0.005dB, Attenuation: 100dB

- 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

 2.8MHz, 5.6MHz and 11.2MHz DSD Input Support

- Filter (fc=50kHz, fc=150kHz, 2.8MHz mode)

 Digital De-emphasis for 32, 44.1, 48kHz sampling

 Soft Mute

 Digital Attenuator (255 levels and 0.5dB step)

 Mono Mode

 External Digital Filter Mode

 THD+N: -112dB

 DR, S/N: 120dB (Mono mode: 123dB)

 I/F Format: 24/32bit MSB justified, 16/20/24/32bit LSB justified, I²S, DSD

 Master Clock:

30kHz ~ 32kHz: 1152fs

30kHz ~ 54kHz: 512fs or 768fs

30kHz ~ 108kHz: 256fs or 384fs

108kHz ~ 216kHz: 128fs or 192fs

~ 384kHz: 64fs or 128fs

~ 768kHz: 64fs

 Power Supply: DVDD=AVDD=3.0  3.6V, VDD1/2=4.75  7.2V

 Digital Input Level: CMOS

 Package: 48-pin LQFP

MS1648-E-03

2014/11

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中文翻译

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