ISD17240EYI

Overview

The Nuvoton ISD17240EYI is a single-chip voice record and playback device from the ISD1700 series. It features an operating voltage range of 2.4 V to 5.5 V and supports sampling frequencies between 4 kHz and 12 kHz, determined by an external resistor. The component provides a message duration of up to 480 seconds at 4 kHz sampling. It operates in standalone push-button mode or via SPI interface. Key electrical parameters include a standby current of 1 µA and speaker output power of 670 mW at 5.5 V into an 8 Ω load. The device utilizes Multi-Level Storage (MLS) technology for direct audio storage without compression.

Feature Summary

• Integrated message management system enabling standalone operation with automatic power-down after each cycle.
• Dual input channels including differential microphone with Automatic Gain Control (AGC) and auxiliary analog input.
• Dual output configuration supporting PWM Class D speaker driver and configurable analog output.
• On-chip oscillator and flash memory providing zero-power message storage.

Applications

• Standalone electronic greeting cards and toys
• Voice-enabled industrial control panels
• Automotive warning systems and announcements

Procurement Notes

Verify the specific suffix 'EYI' against official documentation to confirm package type and temperature rating. Confirm availability status as datasheets may indicate end-of-life phases for specific variants. Ensure ordering details match the required industrial temperature range and SOIC packaging specifications.

Selection Notes

Select this model when extended recording time up to 480 seconds is required. Choose based on the need for high-quality uncompressed audio reproduction. Evaluate the trade-off between sampling frequency and duration using the external oscillator resistor. Consider the dual-mode capability if microcontroller integration is needed alongside simple push-button functionality.

Part Context

This component belongs to the ISD1700 ChipCorder series, which offers various message durations. The ISD17240 variant specifically targets applications requiring longer recording times compared to shorter-duration models like the ISD1730 or ISD1760 within the same family.

Replacement Considerations

ISD17240SYIR: Same functional capabilities but in a SOIC package instead of TSOP. Verify pin compatibility and thermal characteristics before substitution.