AK4373 Datasheet | Asahi Kasei Microdevices

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 k Hz ∼ 48 k Hz † 8-times Over sampling Digital Filter † SCF with high tolerance to clock jitter † Stereo Headphone Amplifier 65m W output (Single-ended mode) into 16Ω 3.3V SNR: 96d B 130m W output (Differential mode) into 32Ω 3.3V SNR: 96d B 60m W output (Pseudo cap-less mode) into 16Ω 3.3V SNR: 86d B Pop-noise free at power-up and reset † Stereo Lineout SNR: 96d B † Mono Speaker Driver Available for both Dynamic and Piezo Speaker 0.8W @ 8Ω HVDD = 4.0V 1.0W @ 4Ω HVDD = 4.0V SNR: 97d B † Digital Processing HPF, LPF, 3D Enhance, Frequency pensation, 5-Bi Quads, Digital ALC/Limiter: +36d B to -54d B, 0.375d B/step † Digital Volume Control: +12d B to -115d B, 0.5d B/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 plement 16/20/24bit MSB justified, 16/20/24bit LSB justified, 16/20/24bit I2S, 16/20/24bit DSP Mode † CMOS Input Level MS0991-E-00 -1- 2008/...