ISD4002-150SYI

Overview

The ISD4002-150SYI is a single-chip voice record and playback IC from the ISD4002 ChipCorder series 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, anti-aliasing filter, smoothing filter, AutoMute feature, audio amplifier, and high-density multilevel Flash memory array. It utilizes a Serial Peripheral Interface (SPI) for address and control, minimizing pin count. The component is housed in a 28-lead Plastic Small Outline IC (SOIC) package.

Feature Summary

• Direct analog storage into non-volatile Flash memory without digitization or compression.
• AutoMute feature provides background noise attenuation during silence periods.
• Fully addressable multiple message handling via SPI interface.
• Zero-power message storage with long-term retention capabilities.

Applications

• Cellular phones and portable products
• Microprocessor or microcontroller-based systems
• Multiple messaging applications

Procurement Notes

Verify the specific suffix 'SYI' against official documentation to confirm package type and temperature range. The datasheet lists commercial packaged units operating from 0°C to +70°C and industrial units from -40°C to +85°C. Ensure the ordering information matches the required environmental specifications for the target application.

Selection Notes

Select this model for applications requiring approximately 150 seconds of voice storage. The 6.4 kHz sampling rate offers a balance between audio quality and duration compared to other variants in the series. Consider the SOIC package for surface-mount assembly requirements and verify SPI compatibility with the host controller.

Part Context

The ISD4002-150SYI belongs to the ISD4002 ChipCorder series, which includes variants with durations of 120, 150, 180, and 240 seconds. These devices share a common architecture utilizing Nuvoton’s patented multilevel storage technology for direct analog voice storage. The series is designed for low-power, single-supply operation in portable electronic devices.

Replacement Considerations

Other models in the ISD4002 series, such as ISD4002-120, ISD4002-180, and ISD4002-240, offer different recording durations and sampling rates. Substitution requires verifying that the alternative duration and audio quality meet system requirements. Package variations (PDIP vs. SOIC) must also be considered for physical compatibility.