ISD2590SR

Overview

The ISD2590SR is a single-chip voice record and playback integrated circuit from Nuvoton's ChipCorder series, designed for multiple message applications with a recording duration of 90 seconds. It utilizes an internal oscillator and features automatic gain control to ensure audio quality. The device operates on a supply voltage ranging from 4.5 V to 6.5 V and supports a sampling frequency of 5.3 kHz with a pass band of 2.3 kHz. It accepts analog single-ended microphone input and provides PWM speaker output. The component is housed in a 28-DIP package suitable for through-hole mounting and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Single-chip solution integrating microphone preamplifier, automatic gain control, anti-aliasing filter, smoothing filter, and speaker amplifier.

Applications

• Pushbutton message cueing systems
• Multiple message voice prompts

Procurement Notes

Verify the exact suffix 'SR' against official Nuvoton documentation, as primary distributor data lists the ISD2590P variant. Confirm RoHS compliance status, as related models are noted as non-compliant. Check for obsolete status and standard package quantities before ordering.

Selection Notes

Select this component for standalone voice messaging requiring up to 90 seconds of storage without external microcontrollers. Ensure the design accommodates the 4.5 V to 6.5 V supply requirement and 28-DIP footprint. Consider the 5.3 kHz sampling rate for required audio fidelity.

Part Context

The ISD2590SR belongs to the ISD2560/75/90/120 family of ChipCorder devices. These CMOS parts provide high-quality single-chip record/playback solutions using on-chip nonvolatile memory cells for zero-power message storage.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing PCB footprints and electrical specifications if considering alternative variants within the same series.