ISD1760EY

Overview

The ISD1700 Series is a fully integrated single-chip multi-message voice record and playback device. The ISD1760EY variant supports message durations from 26 to 120 seconds, with sampling frequencies adjustable between 4 kHz and 12 kHz via an external resistor. It operates on a supply voltage ranging from 2.4 V to 5.5 V. The device features Multi-Level Storage (MLS) technology for non-volatile memory, eliminating the need for digital compression. It includes an on-chip oscillator, microphone preamplifier with Automatic Gain Control (AGC), PWM Class D speaker driver, and analog output capabilities.

Feature Summary

• Integrated message management system enabling standalone push-button operation or microcontroller SPI control
• Patented Multi-Level Storage (MLS) technology for direct audio data storage in solid-state memory
• Dual input channels supporting differential microphone inputs with AGC and single-ended auxiliary analog input
• Dual output channels providing a PWM Class D speaker driver and configurable current/voltage analog output

Applications

• Electronic systems requiring simple push-button voice messaging
• Battery-powered applications due to wide operating voltage range and automatic power-down
• Line-powered electronic devices needing high-quality voice reproduction
• Microcontroller-based systems utilizing SPI interface for complex message management

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and temperature rating. Ensure the component matches the required industrial or commercial specifications. Confirm pinout compatibility during integration. Check for lead-free packaging requirements if applicable. Validate that the selected variant aligns with the intended message duration and sampling frequency needs.

Selection Notes

Select the appropriate sampling frequency based on the desired balance between recording quality and message duration. Choose between Standalone mode for simple applications or SPI mode for advanced control. Consider the operating temperature range requirements for the specific environment. Evaluate the power supply constraints to ensure compatibility with the 2.4 V to 5.5 V operating range. Assess the need for additional amplification based on the available PWM and analog outputs.

Part Context

The ISD1760EY belongs to the Nuvoton ISD1700 ChipCorder series, which offers various message duration options including 30, 60, 120, and 240 seconds. This series utilizes proprietary MLS technology to store audio data directly without compression. The family supports both standalone and SPI modes, providing flexibility for different application complexities and control requirements.

Replacement Considerations

Other variants within the ISD1700 series, such as ISD1730 or ISD17120, offer different message durations but share similar interfaces and functionality. Verify pinout and electrical characteristics when substituting. Ensure the replacement part meets the specific duration and sampling frequency requirements of the design.