ISD17150SY

Overview

The ISD17150SY is a multi-message single-chip voice record and playback device from the Nuvoton ChipCorder series. It features non-volatile message storage using patented Multi-Level Storage (MLS) technology, allowing for user-selectable recording durations ranging from 26 to 120 seconds depending on the specific variant. The sampling frequency is adjustable from 4 kHz to 12 kHz via an external resistor, enabling flexibility between duration and audio quality. Operating voltage spans 2.4 V to 5.5 V, supporting both battery and line-powered applications. The device supports standalone push-button operation or microcontroller control via SPI interface.

Feature Summary

• Integrated proprietary message management system for automatic address location self-management
• On-chip microphone preamplifier with Automatic Gain Control (AGC)
• Built-in Pulse Width Modulation (PWM) Class D speaker driver
• Supports both standalone button mode and SPI microcontroller interface

Applications

• Electronic systems requiring simple push-button messaging
• Battery-operated voice recorders and players
• Microcontroller-based voice annotation modules
• Industrial and consumer electronic voice prompts

Procurement Notes

Verify the exact suffix against official Nuvoton datasheets to confirm pinout compatibility and specific duration ratings. Ensure the package type matches the target PCB footprint. Confirm current availability status as legacy audio components may have limited stock or end-of-life implications.

Selection Notes

Select based on required message duration and sampling frequency constraints. Choose variants with appropriate external resistor values for desired audio quality. Verify power supply requirements align with the 2.4 V to 5.5 V operating range. Consider interface needs when deciding between standalone and SPI-controlled modes.

Part Context

This component belongs to the Nuvoton ISD1700 ChipCorder series, designed for high-quality, fully integrated voice recording and playback. The series offers various duration options and packaging types, including PDIP, SOIC, and die forms, catering to diverse embedded audio application requirements.

Replacement Considerations

Check for direct substitutes within the ISD1700 family with compatible pinouts and similar MLS architecture. Verify functional equivalence in terms of AGC performance and PWM driver capabilities before substitution.