AK4331ECB

Digital To Analog Converters Overview

The AK4331ECB is a 32-bit stereo audio DAC with an integrated Class-G headphone amplifier, housed in a 36-pin CSP package. It operates on AVDD, CVDD, and LVDD supplies ranging from 1.7 V to 1.9 V, with TVDD supporting 1.65 V to 3.6 V. Key electrical parameters include a signal-to-noise ratio of 109 dB, THD+N of -100 dB at 10 mW output into 32 Ω, and power consumption of 4.4 mW in playback mode at 48 kHz. The device supports sampling rates up to 192 kHz via I2S or MSB justified interfaces.

Digital To Analog Converters Feature Summary

• Integrated ground-referenced Class-G stereo headphone amplifier delivering 70 mW into 8 Ω
• Built-in asynchronous sample rate converter (SRC) with up to ×6.02 upsampling capability
• Four selectable 32-bit digital filters including short delay sharp/slow roll-off options
• Jitter cleaner utilizing a built-in crystal oscillator and PLL for improved audio performance

Digital To Analog Converters Applications

• Portable audio devices requiring low power consumption and high sound quality
• Smartphones and tablets integrating digital microphone interfaces
• Bluetooth audio receivers and wireless headphones
• Digital voice recorders and portable media players

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'ECB' corresponds to the 36-pin CSP package configuration. Confirm that the source document explicitly defines this suffix; otherwise, treat it as a standard variant identifier without functional deviation. Ensure compatibility with the required I2C control interface speed of 400 kHz during procurement validation.

Digital To Analog Converters Selection Notes

Select this component when a combined DAC and headphone amplifier solution is required to minimize board space. The 36-pin CSP footprint measures 2.533 mm by 2.371 mm. Consider the internal SRC if input clock frequencies differ significantly from the desired output sampling rate. Verify that the system design can accommodate the necessary external capacitors for the charge pump and LDO circuits.

Digital To Analog Converters Part Context

The AK4331ECB belongs to Asahi Kasei Microdevices' advanced 32-bit DAC family. It shares pin and register compatibility with the AK4375A, facilitating potential upgrades or replacements in existing designs. The device integrates features typically found in separate components, such as a jitter cleaner and digital microphone interface, into a single compact package.

Digital To Analog Converters Replacement Considerations

The AK4375A is documented as pin compatible and register backward compatible with the AK4331. Designers should verify specific pin function differences, particularly regarding the XTI/MCKI and DMCLK/SDTO pins, when substituting between these models.