Product Summary

The AK4373EN 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 AK4373EN 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 AK4373EN is packaged in a space-saving 32-pin QFN package.

Parametrics

AK4373EN absolute maximum ratings: (1)Power Supplies: Analog, AVDD: -0.3 to 4.6 V; Digital, DVDD: -0.3 to 4.6 V; Headphone-Amp / Speaker-Amp, HVDD: -0.3 to 4.6 V; (2)Input Current, Any Pin Except Supplies, IIN: ±10 mA; (3)Analog Input Voltage, VINA: -0.3 to (AVDD+0.3) or 4.6 V; (4)Digital Input Voltage, VIND: -0.3 to (DVDD+0.3) or 4.6 V; (5)Ambient Temperature (powered applied), Ta: -30 to 85 ℃; (6)Storage Temperature, Tstg: -65 to 150 ℃; (7)Maximum Power Dissipation, Pd: 511 mW.

Features

AK4373EN features: (1)Sampling Rate: 8 kHz to 48 kHz; (2)8-times Over sampling Digital Filter; (3)SCF with high tolerance to clock jitter; (4)Stereo Headphone Amplifier; (5)Stereo Lineout: SNR: 96dB; (6)Mono Speaker Driver; (7)Digital Processing; (8)Digital Volume Control: +12dB to -115dB, 0.5dB/step, Mute; (9)Analog Mixing: Mono input; (10)Master Clock (MCKI pin): 256/512/1024fs; (11)Master Clock Output (MCKO pin): 32fs, 64fs, 128fs, 256fs; (12)μP Interface: 3-Wire serial, I2C bus (version1.0, 400 KHz Fast-mode); (13)CMOS Input Level; (14)Package: 32-pin QFN (5mm x 5mm, 0.5mm pitch); (15)Pin/Register compatible with AK4343.

Diagrams

AK4373EN circuit diagram

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