ISD4002-150SY

Overview

The ISD4002-150SY is a single-chip voice record and playback solution from the ISD4002 ChipCorder series, manufactured by Nuvoton Technology Corporation. It provides 150 seconds of recording duration at a sampling frequency of 6.4 kHz with a typical filter passband of 2.7 kHz. The device operates on a single 3-volt supply (2.7 V to 3.3 V) and features an internal oscillator. It utilizes multilevel Flash memory for non-volatile storage and communicates via a Serial Peripheral Interface (SPI). The component is housed in a 28-lead Plastic Small Outline IC (SOIC) package.

Feature Summary

• Direct analog storage technology preserves natural voice quality without digitization or compression algorithms.
• AutoMute feature minimizes background noise during silence periods through signal amplitude detection.
• Fully addressable memory architecture allows for multiple message management via SPI control.
• Integrated audio amplifier drives output loads directly.

Applications

• Voice alarm systems requiring clear speech reproduction
• Portable consumer electronics with limited power budgets
• Industrial control panels needing status announcements

Procurement Notes

Verify the specific suffix 'SY' confirms the SOIC package type and commercial temperature range against the manufacturer's ordering guide. Confirm RoHS compliance status as datasheet specifications may vary by production batch. Ensure the design supports the required 3V logic levels for the SPI interface.

Selection Notes

Select this model when 150 seconds of high-quality voice storage is required within a compact surface-mount footprint. Compare against ISD4002-120SY for shorter durations or ISD4002-180SY/240SY for longer times at lower sample rates. Ensure the host microcontroller supports the necessary SPI protocol timing.

Part Context

This component belongs to the ISD4002 ChipCorder series, which offers various duration options ranging from 120 to 240 seconds. The series is designed for microprocessor-based systems requiring low-power, high-fidelity voice messaging capabilities using patented multilevel storage technology.

Replacement Considerations

Nuvoton recommends the I3900FYI as a manufacturer-recommended replacement. Verify pin compatibility and software register mapping before substitution.