AK4554VT

Codecs Overview

The AK4554VT is a low voltage, 16-bit A/D and D/A converter designed for portable digital audio systems. It utilizes delta-sigma modulation with single-ended analog signal inputs and outputs, eliminating the need for external filters. The device incorporates SCF techniques in its on-chip post-filter to improve accuracy against clock jitter. It supports sampling rates from 8kHz to 50kHz with master clocks of 256fs, 384fs, 512fs, or 768fs (and 1024fs for lower sample rates). Power supply ranges from 1.6V to 3.6V, with a typical supply current of 8mA at Ta = −40 to 85°C.

Codecs Feature Summary

• Integrated high-pass filter for DC-offset cancellation
• Single-ended ADC and DAC interfaces requiring no external filters
• Digital de-emphasis support for standard sampling rates
• High jitter tolerance through advanced filtering techniques

Codecs Applications

• Portable digital audio systems
• Low power consumer audio devices
• Compact audio recording equipment

Codecs Procurement Notes

Verify the specific suffix VT indicates tape and reel packaging when sourcing components. Confirm the manufacturer designation as Asahi Kasei Microdevices or AKM. Ensure the component meets the required operating temperature range of -40°C to 85°C for your specific application environment before finalizing procurement.

Codecs Selection Notes

Select this component for designs requiring small package size and low power consumption. It is suitable for applications where single-ended signals are acceptable and external filtering must be minimized. Verify that the required sampling rate falls within the 8kHz to 50kHz range and that the system can provide the necessary master clock frequencies.

Codecs Part Context

The AK4554 belongs to the AKM family of low-power audio codecs. It is often evaluated using the AKD4554-E evaluation board, which allows separate testing of the A/D and D/A sections. This part is distinct from higher-resolution models like the AK4558 or discontinued variants such as the AK4552.

Codecs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official replacement guides or contact the manufacturer directly for cross-reference information.