ISD1760EYI

Overview

The ISD1760EYI is a fully integrated single-chip voice record and playback device from the Nuvoton ISD1700 ChipCorder series. It utilizes patented Multi-Level Storage (MLS) technology to store audio data directly in on-chip Flash memory without digital compression, ensuring high-quality reproduction. The device supports user-selectable message durations ranging from 26 seconds to 120 seconds and sampling frequencies adjustable from 4 kHz to 12 kHz via an external resistor. Operating voltage spans 2.4 V to 5.5 V, with a typical standby current of 1 µA. It features dual input channels for differential microphone or auxiliary analog signals and provides both PWM Class D speaker outputs and configurable analog outputs.

Feature Summary

• Integrated message management system enabling standalone push-button operation with automatic power-down after each cycle.
• Dual operating modes supporting simple hardware control or full microcontroller management via SPI interface.
• Built-in Automatic Gain Control (AGC) for microphone preamplification and four customizable sound effects for operational feedback.
• Non-volatile storage providing long-term message retention and resistance to shock and vibration.

Applications

• Voice messaging systems requiring multi-message recording and playback
• Industrial equipment status indicators and alarm systems
• Consumer electronics with voice prompts and interactive feedback
• Automotive interior announcement and notification modules

Procurement Notes

Verify the specific suffix 'EYI' against official ordering tables to confirm package type and temperature grade. Ensure the design matches the required sampling frequency by selecting the correct external oscillator resistor value. Confirm that the application environment stays within the specified operating voltage and temperature limits for reliable performance.

Selection Notes

Select this component when a self-managing voice solution is needed without complex firmware development. The ISD1760 offers a balance of duration and quality suitable for mid-range applications. Consider the ISD1730 or ISD17120 if shorter or longer recording times are required respectively. Verify that the target system can accommodate the necessary external passive components for audio filtering and power supply decoupling.

Part Context

This part belongs to the ISD1700 ChipCorder family, which includes variants like the ISD1730, ISD17120, and ISD17240. These devices share a common architecture and feature set but differ primarily in their maximum message duration capabilities based on the internal memory size. The series is designed for applications ranging from simple voice notes to complex multi-message sequences.

Replacement Considerations

Direct replacements within the same series include the ISD1730SYI for shorter durations or the ISD17120SYI for longer durations. When substituting, verify that the pinout remains compatible and adjust the external oscillator resistor to maintain the desired sampling frequency and audio quality characteristics.