ISD4003-05MSYI

Overview

The ISD4003-05MSYI is a single-chip voice record and playback device from the ISD4003 ChipCorder series, manufactured by Nuvoton Technology Corporation. It provides approximately five minutes of recording duration at a sampling frequency of 6.4 kHz. The component operates on a single 2.7V to 3.3V supply and features an internal oscillator with a typical filter pass band of 2.7 kHz. It utilizes multilevel direct analog storage technology for high-fidelity audio reproduction without digital compression. The device communicates via SPI or Microwire interfaces and is housed in a 28-SOIC package.

Feature Summary

• Multilevel direct analog storage technology preserves natural voice quality without quantization noise
• Integrated AutoMute feature attenuates background noise during silence periods
• Non-volatile Flash memory retains messages for up to 100 years with zero power consumption
• Supports multiple message addressing through standard SPI or Microwire serial interfaces

Applications

• Portable cellular phones and mobile communication terminals
• Advertising players and voice-enabled promotional devices
• Remote home appliance control systems with voice feedback
• Public transport automatic announcement systems

Procurement Notes

Verify the specific suffix 'I' indicates industrial temperature range (-40°C to +85°C) compared to commercial variants. Confirm package type matches design requirements. Check current product status as older ISD4003 models may have discontinuation notices. Ensure ordering documentation aligns with Nuvoton's latest datasheet revisions.

Selection Notes

Select this model when five-minute recording time at 6.4 kHz sampling rate is required. Choose over other durations if balance between audio fidelity and storage capacity is needed. Verify interface compatibility with host microcontroller SPI settings. Consider external clock precision if strict timing stability is necessary for the application environment.

Part Context

The ISD4003 series represents Nuvoton's CMOS-based solution for portable voice messaging. It integrates oscillators, filters, and amplifiers on a single chip. The series includes 4, 5, 6, and 8-minute variants. The ISD4003-05 variant specifically targets applications requiring moderate duration with higher sampling rates than longer-duration models.

Replacement Considerations

ISD4003-05MSIR (Commercial Temperature Range): Identical electrical specifications but rated for 0°C to +70°C operation instead of industrial range.