ISD2590P

Overview

The ISD2590P is a voice record and playback integrated circuit from Nuvoton Technology Corporation's ChipCorder series. It supports multiple message recording with a duration of 90 seconds. The device utilizes an internal or external oscillator and features automatic gain control for signal optimization. It operates on a supply voltage ranging from 4.5 V to 6.5 V within an operating temperature range of 0°C to 70°C. The sampling frequency is 5.3 kHz, and the pass band is 2.3 kHz. Input signals are analog single-ended or microphone-based, while the output is a PWM speaker signal. The component is housed in a 28-DIP package (0.600 inch / 15.24 mm) designed for through-hole mounting.

Feature Summary

• Supports multiple message recording and playback functionality
• Integrates automatic gain control for audio signal management
• Provides pushbutton interface for operation control

Applications

• Voice messaging systems
• Automated announcement devices
• Educational toys with voice capabilities

Procurement Notes

Verify component status as the ISD2590P is listed as obsolete by the manufacturer. Confirm availability through authorized distributors or secondary market suppliers. Check RoHS compliance status, which is indicated as non-compliant in available documentation. Ensure the 28-DIP package matches the target PCB footprint requirements before procurement.

Selection Notes

Select this component when a dedicated voice recording solution with pushbutton control is required. Consider the 90-second recording limit and 5.3 kHz sampling rate for audio quality needs. Verify that the 4.5 V to 6.5 V supply voltage aligns with the system power design. The through-hole 28-DIP package dictates specific board layout constraints compared to surface-mount alternatives.

Part Context

The ISD2590P belongs to the Nuvoton ChipCorder family, which includes variants like the ISD2560, ISD2575, and ISD25120. These components share similar voice recording architectures but differ in memory capacity and recording duration. The ISD2590P specifically offers 90 seconds of recording time, positioning it between shorter and longer duration models in the series.

Replacement Considerations

Direct substitutes include other members of the ISD25xx series such as ISD2560, ISD2575, or ISD25120, depending on required recording duration. Verify pin compatibility and package type (28-DIP) when selecting alternatives. Since the part is obsolete, evaluate newer Nuvoton voice ICs if long-term supply stability is critical.