ISD17120EYI

Overview

The ISD17120EYI is a single-chip multi-message voice record and playback device from the Nuvoton ISD1700 ChipCorder series. It features user-selectable message durations ranging from 26 to 120 seconds, with sampling frequencies adjustable between 4 kHz and 12 kHz via an external resistor. The device operates on a supply voltage of 2.4 V to 5.5 V and supports both standalone push-button and SPI microcontroller modes. Key specifications include a differential microphone input with Automatic Gain Control (AGC), a single-ended auxiliary analog input, and dual output channels comprising a PWM Class D speaker driver and a configurable analog output.

Feature Summary

• Integrated message management system enabling self-managed address locations for multiple messages in standalone mode.
• Dual operating modes supporting simple push-button control or full microcontroller control via SPI interface.
• On-chip oscillator and proprietary Multi-Level Storage (MLS) technology for direct solid-state audio storage without digital compression.
• Automatic power-down capability after operation cycles to conserve energy in battery-powered applications.

Applications

• Electronic systems requiring high-quality voice recording and playback
• Battery-operated devices utilizing low-power standby modes
• Microcontroller-based voice messaging interfaces

Procurement Notes

Verify the exact part number against official manufacturer documentation before procurement. Confirm package type availability and ensure compliance with specified operating temperature ranges. Check for any recent obsolescence notices or recommended replacement components directly from Nuvoton Technology Corporation sources.

Selection Notes

Select this component when designing systems requiring flexible message duration and quality trade-offs. Ensure the external oscillator resistor matches the desired sampling frequency. Verify that the application environment falls within the specified commercial or industrial temperature limits and voltage requirements.

Part Context

The ISD17120EYI belongs to the ISD1700 ChipCorder series, which provides integrated voice recording solutions. This series utilizes patented Multi-Level Storage technology to store audio data directly in flash memory, offering high reliability and long-term data retention for various electronic applications.

Replacement Considerations

Consult the official datasheet for compatible substitutes within the ISD1700 series. Verify pin compatibility and functional equivalence if replacing with other models such as ISD1730, ISD1760, or ISD17240 based on specific duration and feature requirements.