ISD4002-120EYIR

Overview

The ISD4002-120EYIR is a single-chip voice record and playback solution from the ISD4002 ChipCorder series. It provides 120 seconds of recording duration at an 8.0 kHz sampling frequency with a typical filter passband of 3.4 kHz. The device operates on a single 3V supply, drawing 15 mA during playback and 25 mA during recording, with a standby current of 1 µA. It features an SPI interface for control, AutoMute functionality, and non-volatile Flash memory storage.

Feature Summary

• Single-chip architecture integrating analog transceivers, filters, amplifier, and multilevel Flash memory
• Direct analog storage without digitization or compression for high-quality natural voice reproduction
• AutoMute feature minimizes background noise attenuation during silence periods
• SPI serial interface allows fully addressable multiple message handling

Applications

• Cellular phones and portable messaging devices
• Microprocessor-based systems requiring zero-power message storage
• Voice prompts in consumer electronics

Procurement Notes

Verify the specific suffix 'EYIR' against official Nuvoton documentation to confirm package type and temperature range. Datasheet lists SOIC and PDIP packages; ensure the physical footprint matches the design requirements. Confirm RoHS compliance status as specified in the ordering information section of the latest datasheet revision.

Selection Notes

Select this model for applications requiring exactly 120 seconds of audio time. Choose based on the required sampling rate of 8.0 kHz for optimal voice quality within that duration. Ensure the system supports SPI communication and can handle the 3V supply voltage. Consider the commercial temperature range if industrial ratings are not needed.

Part Context

This component belongs to the ISD4002 series, which offers durations ranging from 120 to 240 seconds. The series utilizes Nuvoton's patented multilevel storage technology in CMOS Flash memory. Other variants include ISD4002-150, -180, and -240 for longer recording times with lower sampling rates.

Replacement Considerations

ISD4002-120SY is a documented alternative in the same series with identical electrical specifications but may differ in package style (SOIC vs. potentially different variant). Verify pin compatibility and thermal characteristics before substitution.