ISD5008SI

Overview

The ISD5008SI is a single-chip voice record and playback device from Nuvoton Technology Corporation, designed for seamless integration into digital cellular phones, automotive communications, GPS systems, and portable devices. It supports 4 to 8 minutes of voice storage duration depending on the selected sampling frequency (4.0 kHz to 8.0 kHz). The device operates on a single +3V supply with typical operating currents of 15 mA during playback and 25 mA during recording, while standby current is 1 µA. It features an SPI or Microwire interface for microcontroller control, integrated automatic gain control (AGC), summing amplifiers, and a speaker driver capable of delivering 23 mW into an 8 Ω load.

Feature Summary

• Fully integrated single-chip solution combining analog front-end, multi-level storage array, and digital control logic without external components.
• Supports one-way and two-way full-duplex conversation recording and playback via internal summing amplifiers.
• Includes integrated automatic gain control (AGC) for microphone input and configurable audio gating switches.
• Features a built-in Class D speaker driver and auxiliary output interface suitable for car kit applications.

Applications

• Digital cellular phones (GSM, CDMA, TDMA, PDC, PHS)
• Automotive communications and car kits
• GPS and navigation systems
• Portable communication products

Procurement Notes

Verify the specific ordering suffix 'SI' against the manufacturer's official datasheet to confirm package type and temperature range. Ensure the component source provides valid traceability documentation. Confirm that the device revision matches the required application specifications before procurement.

Selection Notes

Select this component when a compact, low-power voice storage solution is required for mobile or automotive environments. Consider the available memory duration options based on the desired sampling rate. Ensure the host system supports SPI or Microwire interfaces for configuration and control operations.

Part Context

The ISD5008 belongs to the ChipCorder family of voice record/playback devices. It utilizes patented multilevel storage technology to store voice signals directly in nonvolatile memory without compression. This approach preserves natural sound quality and eliminates the need for complex codec algorithms typically found in other solid-state solutions.

Replacement Considerations

Check for direct substitutes within the ISD5008 series offering different duration or packaging options. Verify compatibility with existing SPI/Microwire protocols if replacing with other voice ICs. No specific alternative part numbers are confirmed in the provided documentation.