描述 Description

The AK4331 is an advanced 32-bit high sound quality stereo audio DAC with a built-in ground-referenced headphone amplifier. The AK4331 has four types of 32-bit digital filters for better sound quality, achieving low distortion characteristics and wide dynamic range. The AK4331 also has a jitter cleaner with a built-in SRC and a Crystal. The AK4331 is available in a 36-pin CSP package, utilizing less board space than competitive offerings.

特性 Features

·Product Name：??AK4331ECB??Advanced D/A Converter with Headphone Amplifier：
·DAC：　Advanced 32-bit Stereo Audio D/A Converter；
·????Sound Color：　4 Types, 32-bit 8-fold Digital Filters　　- Short Delay Sharp Roll-off, GD=5.5/fs　　- Short Delay Slow Roll-off, GD=4.5/fs　　- Sharp Roll-off　　- Slow Roll-off：
·Headphone Amplifier：　Ground Referenced Class-G Stereo Headphone Amplifier　　- Output Power: 70mW @ 8Ω　　- Output Noise Level: -114dBV (Analog Volume = -10dB)　　- Analog Volume: +4 to -10dB, 2dB Step　　- Ground Loop Noise Canceling：
·????THD+N：　-100dB；
·????SNR：　109dB；
·Sampling Rate：　8kHz to 192kHz??Master/Slave Mode；
·Jitter Cleaner：　Available (with Asynchronous Sample Rate Converter / Crystal Oscillator / Low Jitter PLL)：
·Digital Microphone Interface：　Available (Stereo)：
·Resolution：　32-bit；
·Number of Channel：　2 channels；
·Microcomputer Interface：　I2C (400kHz)；
·VELVET SOUND Technology：　Low-distortion Technology　OSRD (Over Sampling Ratio Doubler) Technology；
·Power Consumption：　4.4mW (fs=48kHz)：
·Power Supply：　AVDD = CVDD = LVDD = 1.7 to 1.9V　TVDD = 1.65 to 3.6V；
·Operation Temperature：　-40 to 85°C；
·Package：　36-pin CSP (2.533 × 2.371mm, 0.4mm pitch)；
·Sales Start：　September 2018 ：

應(yīng)用 Application

Bluetooth Headphones, USB Headphones, Portable Music Players, etc