ISD2115AYYIR

Overview

The ISD2100 Series is a digital ChipCorder providing single-chip storage and playback of high-quality audio. The ISD2115A variant features 512Kbit flash storage, enabling up to 15 seconds of audio duration based on 8kHz/4-bit ADPCM compression. It integrates digital de-compression, memory management, and a Class D speaker driver capable of delivering 420mW into an 8Ω load at 3.3V. The device operates within a voltage range of 2.7V to 3.6V and supports industrial temperatures from -40°C to 85°C. Control is achieved via SPI or standalone GPIO triggers.

Feature Summary

• Integrated Class D speaker driver for direct connection to speakers or buzzers without external components
• Supports standalone operation through customizable Voice Macro scripts assigned to GPIO trigger pins
• Utilizes variable-bit-rate optimized compression algorithms including Enhanced ADPCM for efficient storage
• Includes non-volatile flash storage with integrated checksum calculation for fast verification

Applications

• Voice prompts in consumer electronics
• Sound effects generation for user interfaces
• Standalone audio announcement systems
• Industrial control panel feedback

Procurement Notes

Verify the specific suffix 'YYIR' against the manufacturer's official ordering information to confirm package type (SOP-14) and temperature grade (Industrial). Ensure the design utilizes the correct 2.7V to 3.6V power supply range. Confirm that the application requires the 15-second duration limit inherent to the ISD2115A model rather than the 30-second ISD2130 variant.

Selection Notes

Select this component when a compact, single-chip audio solution is required without external microcontrollers for basic playback. The ISD2115A is suitable for applications needing approximately 15 seconds of compressed audio. Consider the SOP-14 package if board space is limited compared to the QFN-20 option. Evaluate the need for GPIO triggering versus SPI control based on system architecture complexity.

Part Context

The ISD2115AYYIR belongs to the ISD2100 series of digital ChipCorders manufactured by Nuvoton Technology Corporation. This family focuses on simplifying audio integration by combining flash memory, compression logic, and amplification into one package. The series differentiates models primarily by storage capacity, which dictates maximum audio recording time.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Nuvoton directly for cross-reference recommendations or evaluate other members of the ISD2100 family, such as the ISD2130, if increased storage duration is acceptable.