ISD1760SY

Overview

The Nuvoton ISD1760SY is a fully integrated, single-chip multi-message voice record and playback device from the ISD1700 ChipCorder series. It utilizes patented Multi-Level Storage (MLS) technology to store audio data directly in on-chip Flash memory without digital compression. The device supports selectable sampling frequencies ranging from 4 kHz to 12 kHz via an external resistor, enabling message durations of up to 120 seconds at 4 kHz. Operating voltage spans 2.4 V to 5.5 V, and it features dual input channels (differential microphone with AGC and auxiliary analog input) alongside dual output channels (PWM Class D speaker driver and configurable analog output).

Feature Summary

• Integrated message management system for standalone push-button applications or microcontroller SPI control.
• Dual operating modes allowing automatic power-down after operations in standalone mode or full user control via SPI commands.
• Built-in Automatic Gain Control (AGC) for microphone preamplifier and volume control with eight adjustable levels.
• Supports optional vAlert feature to indicate new messages and four customizable sound effects for operational confirmation.

Applications

• Electronic systems requiring high-quality, natural voice reproduction without external compression chips.
• Battery-powered or line-powered devices optimized by wide operating voltage range.
• Applications needing sophisticated messaging flexibility in simple push-button environments.
• Systems requiring direct drive capability for standard 8 Ω speakers or typical buzzers via PWM output.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and temperature grade. Ensure the component matches the required industrial or commercial specifications before integration into the design.

Selection Notes

Select this model when a recording duration of approximately 120 seconds is required at lower sampling frequencies. Consider the external oscillator resistor value needed to achieve the desired balance between recording quality and duration based on the application's specific constraints.

Part Context

This component belongs to the ISD1700 ChipCorder series, which offers various message duration options. The ISD1760 specifically provides a middle-ground duration compared to shorter models like the ISD1730 and longer models like the ISD17240 within the same family architecture.

Replacement Considerations

ISD1760SO