ISD2590PY

Overview

The ISD2590PY is a voice record and playback integrated circuit from Nuvoton Technology Corporation's ChipCorder series. It supports multiple message recording with a maximum duration of 90 seconds. The device operates on a supply voltage range of 4.5 V to 6.5 V and features an internal or external oscillator configuration. Key electrical parameters include a sampling frequency of 5.3 kHz, a pass band of 2.3 kHz, and automatic gain control functionality. The input signal accepts analog single-ended sources such as microphones, while the output provides PWM speaker signals. It is housed in a 28-DIP package (0.600 inch / 15.24 mm) designed for through-hole mounting and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Pushbutton interface for direct user interaction without complex programming
• Automatic gain control to maintain consistent audio levels during recording
• Integrated PWM speaker output capability for direct audio driving

Applications

• Voice messaging systems
• Announcement modules
• Educational toys with recorded content

Procurement Notes

Verify component authenticity carefully as the ISD2590P series is listed as obsolete by the manufacturer. Confirm that the 'Y' suffix corresponds to the specific tape-and-reel or bulk packaging variant if required, though standard datasheets primarily reference the DIP package. Ensure compliance with RoHS non-compliant status if environmental regulations apply to the target assembly. Check for available stock from authorized distributors given the end-of-life status.

Selection Notes

Select this component when a simple, low-pin-count solution for short-duration voice recording is required. It is suitable for applications needing pushbutton operation rather than serial communication interfaces. Consider the 90-second limit and 5.3 kHz sampling rate against audio quality requirements. Verify that the 4.5 V to 6.5 V supply voltage aligns with the system power design, as it does not support lower voltage logic levels common in modern 3.3 V systems.

Part Context

The ISD2590PY belongs to the Nuvoton ChipCorder family, which integrates flash memory and voice processing circuits into a single chip. This series eliminates the need for external memory or DSP components. The ISD2590 model specifically targets the 90-second capacity tier within the lineup, offering a balance between recording time and pin count compared to higher-capacity variants like the ISD25120.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the product is obsolete, designers should evaluate newer Nuvoton voice ICs with digital interfaces or alternative manufacturers' offerings that support modern voltage levels and RoHS compliance.