AK4352VT

ADCs/DACs - Special Purpose Overview

The AK4352VT is an 18-bit stereo digital-to-analog converter (DAC) utilizing a Multi-Bit Delta-Sigma architecture. Designed for low-voltage operation, it functions within a supply range of 1.8V to 3.6V with typical power dissipation of 6mW at 2V. The device integrates an on-chip 8x FIR interpolator and a buffer with single-ended outputs, eliminating the need for external reconstruction filters. It supports sampling rates from 8kHz to 50kHz and offers dynamic ranges of 94dB at 2V and 96dB at 3V. The component is housed in a compact 16-pin TSSOP package suitable for portable audio systems.

ADCs/DACs - Special Purpose Feature Summary

• Multi-Bit Delta-Sigma DAC architecture providing high dynamic range (94dB @ 2V, 96dB @ 3V).
• Integrated 8x FIR interpolator with passband ripple of ±0.06dB and stopband attenuation of 43dB.
• On-chip buffer with single-ended analog outputs requiring no external filtering components.
• Low power consumption of 6mW at 2V supply voltage.

ADCs/DACs - Special Purpose Applications

• Portable audio systems such as MiniDisc (MD) players.
• Digital audio equipment requiring small form factors and low voltage operation.
• Battery-powered consumer electronics.

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix VT against current manufacturer documentation to confirm the 16-pin TSSOP package and -40°C to +85°C operating temperature range. Ensure that all digital input pins are properly terminated and not left floating during operation to maintain signal integrity and prevent undefined states.

ADCs/DACs - Special Purpose Selection Notes

Select this component for designs requiring an 18-bit resolution with integrated interpolation and output buffering. It is appropriate for applications where minimizing external passive components is critical. Verify that the system clock requirements (256fs or 384fs) align with the available master clock sources in the host system.

ADCs/DACs - Special Purpose Part Context

The AK4352VT belongs to the AK4352 product family manufactured by Asahi Kasei Microdevices/AKM. The 'VT' suffix specifically denotes the 16-pin TSSOP package variant with an extended industrial temperature range of -40°C to +85°C. This distinguishes it from other potential package options within the same functional series.

ADCs/DACs - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers for the AK4352VT are not available in the provided source material. Designers should consult the manufacturer's official documentation for any recommended cross-references or updated component alternatives.

ADCs/DACs - Special Purpose FAQ

What digital audio interface formats does the AK4352 support?

The AK4352 supports four digital input formats selectable via DIF0 and DIF1 pins: 16-bit LSB justified, 18-bit LSB justified, 18-bit MSB justified, and I2S compatible mode.

How is the de-emphasis filter enabled?

The digital de-emphasis filter, which corresponds to a 44.1kHz sampling rate, is enabled by setting the DEM pin to a high logic level.

What is the function of the PD pin?

The Power-Down (PD) pin controls the operational state. When held low, the device enters power-down mode and the analog outputs become high-impedance. It must be pulled low upon power-up to reset the device.