ISD2590SY

Overview

The ISD2590SY is a single-chip voice record and playback integrated circuit from Nuvoton's ChipCorder series, designed for multiple message applications. It provides approximately 90 seconds of recording duration with a sampling frequency of 5.3 kHz and a pass band of 2.3 kHz. The device operates on a supply voltage ranging from 4.5 V to 6.5 V and features an internal oscillator. It utilizes non-volatile memory for zero-power message storage and includes automatic gain control. The component is housed in a 28-DIP package suitable for through-hole mounting.

Feature Summary

• Integrates microphone preamplifier, automatic gain control, anti-aliasing filter, smoothing filter, and speaker amplifier on a single chip.
• Stores recordings in on-chip nonvolatile memory cells, enabling zero-power message storage without battery backup.
• Compatible with microcontrollers to facilitate complex messaging and addressing operations.

Applications

• Pushbutton-operated voice messaging systems
• Message cueing devices
• Standalone voice record/playback units

Procurement Notes

Verify the obsolete status of this component before design finalization, as it may no longer be manufactured by Nuvoton Technology Corporation. Confirm that the 28-DIP package and 4.5 V to 6.5 V supply requirements align with current system constraints. Ensure compliance with RoHS non-compliant status if environmental regulations apply to the target deployment region.

Selection Notes

Select this part when standalone voice messaging with pushbutton control is required without external microcontroller complexity. The 90-second duration suits moderate-length announcements. Verify that the 2.3 kHz audio bandwidth meets quality expectations. Consider the through-hole 28-DIP package for prototyping or specific board layout needs compared to surface-mount alternatives.

Part Context

The ISD2590SY belongs to the ISD2560/75/90/120 family of single-chip voice recorders. These CMOS devices offer durations ranging from 60 to 120 seconds. The series shares common architectural features such as on-chip oscillators and high-density multi-level storage arrays, differing primarily in memory capacity and resulting recording time.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, alternative solutions may require evaluating newer ChipCorder series models or discrete audio processing components.