ISD1740PY

Overview

The ISD1740PY is a single-chip voice record and playback integrated circuit manufactured by Nuvoton Technology Corporation. It supports multiple message recording with a duration ranging from 26 to 80 seconds. The device utilizes 16-bit PCM audio technology and includes automatic gain control for high-quality output. It operates via pushbutton or SPI interfaces and is housed in a 28-DIP package.

Feature Summary

• Single-chip solution integrating voice recording and playback capabilities
• Supports sampling frequencies from 4kHz to 12kHz
• Includes automatic gain control for consistent audio quality

Applications

• Multiple message announcement systems
• Voice-enabled consumer electronics
• Industrial voice prompts

Procurement Notes

Verify the specific package type, which is documented as 28-DIP, against your board design requirements. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure interface compatibility with your host system, as the component supports both pushbutton and SPI control methods.

Selection Notes

Select this component when a dedicated voice recording and playback function is required without external memory. The choice depends on the need for up to 80 seconds of total recording time and the preference for a single-chip architecture. Consider the 28-DIP package form factor for through-hole mounting applications.

Part Context

This part belongs to the ISD series of voice record/playback ICs from Nuvoton. These components are designed to replace complex discrete solutions by integrating flash memory, ADC, DAC, and amplifiers into a single unit. The ISD1740PY specifically targets applications requiring moderate recording durations with straightforward interface options.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and functional compatibility before considering any alternative devices from other manufacturers.