GENERAL DESCRIPTION

The AK4373 is a low power stereo 24bit DAC with an integrated stereo headphone amplifier and a monaural speaker driver. It can be used for a variety of portable audio and media player applications, including game consoles, dedicated headphone drivers, personal navigation devices, and portable media players. The output drivers can be configured for three unique use cases: mono speaker driver or single-ended ac-coupled headphones which can be used as stereo line-out, DC-coupled BTL headphones and Pseudo Cap-less. The AK4373 operates off of a low-voltage power supply, ranging from 2.2V to 3.6V. The output amplifiers operate at up to 4.0V of the headphone power supply. The device is packaged in a space-saving 32-pin QFN package.

FEATURES

□ Sampling Rate: 8 kHz ∼ 48 kHz

□ 8-times Over sampling Digital Filter

□ SCF with high tolerance to clock jitter

□ Stereo Headphone Amplifier 65mW output (Single-ended mode) into 16Ω 3.3V SNR: 96dB 130mW output (Differential mode) into 32Ω 3.3V SNR: 96dB 60mW output (Pseudo cap-less mode) into 16Ω 3.3VSNR: 86dB Pop-noise free at power-up and reset

□ Stereo Lineout S□NR: 96dB

□ Mono Speaker Driver Available for both Dynamic and Piezo Speaker 0.8W @ 8Ω HVDD = 4.0V 1.0W @ 4Ω HVDD = 4.0V SNR: 97dB

□ Digital Processing HPF, LPF, 3D Enhance, Frequency Compensation, 5-BiQuads, Digital ALC/Limiter: +36dB to -54dB, 0.375dB/step

□ Digital Volume Control: +12dB to -115dB, 0.5dB/step, Mute

□ Analog Mixing: Mono input

□ PLL: Input Frequency: 27MHz, 25MHz, 24MHz, 13.5MHz, 12.288MHz, 12MHz, and 11.2896MHz (MCKI pin) 1fs (LRCK pin) 32fs or 64fs (BICK pin) Input Level: CMOS or AC coupling Input

□ Master Clock (MCKI pin): 256/512/1024fs

□ Master Clock Output (MCKO pin): 32fs, 64fs, 128fs, 256fs

□ µP Interface: 3-Wire serial, I2C bus (version1.0, 400 KHz Fast-mode)

□ Audio Interface Format: MSB First, 2’s complement 16/20/24bit MSB justified, 16/20/24bit LSB justified, 16/20/24bit I2S, 16/20/24bit DSP Mode

□ CMOS Input Level

□ Power Supply: Analog (AVDD): 2.2 to 3.6V Digital (DVDD): 1.6 to 3.6V Driver (HVDD): 2.2 to 4.0V

□ Power Consumption: 11.9mW headphone playback

□ Ta = -30 ~ +85°C

□ Package: 32-pin QFN (5mm x 5mm, 0.5mm pitch)

□ Pin/Register compatible with AK4343

AK4373属于集成电路（IC） > ADC/DAC - 特殊用途。旭化成微电子株式会社制造生产的AK4373ADC/DAC - 特殊用途该产品族中的产品可用于模拟和数字表示的信息转换，适用于特定用例，或集成了通用数据转换器中不常见的其他功能。例如针对超声或汽车雷达应用集成了低噪声放大器和可变增益级的器件、注重音频和视频的产品、在段码式显示器上集成显示测量值功能的器件、集成输入输出电气隔离的器件等。