ISD4002-120EY

Overview

The ISD4002-120EY is a single-chip voice record and playback solution from the ISD4002 ChipCorder series, designed for portable messaging applications. It features 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 (2.7V to 3.3V) and includes an on-chip oscillator, anti-aliasing filter, smoothing filter, AutoMute feature, audio amplifier, and high-density multilevel Flash memory array. Control is managed via a Serial Peripheral Interface (SPI).

Feature Summary

• Single-chip CMOS-based solution integrating analog transceivers, decoders, power conditioning, and non-volatile multilevel storage.
• AutoMute feature provides background noise attenuation during playback silence periods.
• Direct analog storage into Flash memory without digitization or compression for high-quality natural voice reproduction.
• Fully addressable multiple message handling through SPI or Microwire serial interface.

Applications

• Cellular phones and other portable products requiring messaging capabilities.
• Microprocessor or microcontroller-based systems needing zero-power message storage.
• Voice prompting and announcement modules in consumer electronics.

Procurement Notes

Verify the specific suffix 'EY' against official Nuvoton documentation to confirm package type and temperature range, as datasheet listings primarily specify SOIC and PDIP options. Ensure compatibility with the required 3V supply voltage and SPI interface timing parameters for your system design.

Selection Notes

Select this model when a 120-second recording duration at 8.0 kHz sampling rate is required. Consider the ISD4002-150, -180, or -240 variants if longer durations are needed, accepting lower sampling frequencies. Verify that the system can support the 2.7V to 3.3V operating voltage range and provide appropriate decoupling for separate analog and digital supplies.

Part Context

The ISD4002 belongs to the ChipCorder series, which utilizes patented multilevel storage technology for direct analog voice storage. This family offers various durations (120s to 240s) and is designed for low-power, single-supply operation. The series eliminates the need for external codecs or compression algorithms by storing signals directly in Flash memory.

Replacement Considerations

ISD4002-120SY is a documented alternative within the same series offering identical functional specifications but in a different package configuration.