ISD4003-04MSY

Overview

The ISD4003-04MSY is a single-chip voice record and playback IC from Nuvoton's ChipCorder series, designed for portable messaging applications. It features a 28-SOIC package and supports multiple messages via an SPI interface. The device operates on a 2.7 V to 3.3 V supply with typical standby current of 1 µA. Key electrical parameters include an 8 kHz sampling frequency, a 3.4 kHz filter passband, and a recording duration of 4 minutes. It utilizes non-volatile multilevel Flash memory for zero-power storage.

Feature Summary

• Direct analog storage technology preserves natural voice quality without digitization or compression artifacts.
• AutoMute feature minimizes background noise during silence periods by attenuating the output signal.
• Fully addressable memory architecture allows for precise control over message location and management via SPI commands.

Applications

• Lane departure warning systems in automotive environments
• Voice prompts for cellular phones and portable consumer electronics
• Industrial alarm and security system audio notifications

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm the specific suffix MSY corresponds to the 28-SOIC package variant. Check for RoHS compliance status and ensure the part meets the required commercial temperature range specifications before integration into final designs.

Selection Notes

Select this model when a fixed 4-minute recording capacity at 8 kHz sampling rate is required. Ensure the host microcontroller supports SPI communication protocols compatible with the ISD4003 series. Verify that the system power supply remains within the 2.7 V to 3.3 V operating range to maintain optimal audio performance and low power consumption.

Part Context

This component belongs to the ISD4003 series, which offers varying durations including 5, 6, and 8 minutes. The -04M designation specifically indicates the 4-minute duration variant. The MSY suffix denotes the plastic small outline integrated circuit (SOIC) package type with lead-free composition, suitable for surface-mount assembly processes.

Replacement Considerations

The I3900FYI is listed as a manufacturer-recommended alternative. Verify pin compatibility and software command set equivalence before substitution. Note that the ISD4003 series is marked as obsolete; confirm availability and lifecycle status of potential replacements with the supplier.