ISD17120EYR

Overview

The ISD17120EYR is a member of the Nuvoton ISD1700 ChipCorder series, functioning as a fully integrated single-chip multi-message voice record and playback device. 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 oscillator resistor, enabling message durations up to 120 seconds at 8 kHz or 80 seconds at 12 kHz. Operating voltage spans 2.4 V to 5.5 V. It features dual operating modes: standalone push-button control and microcontroller SPI interface. Key components include a microphone preamplifier with Automatic Gain Control (AGC), auxiliary analog input, PWM Class D speaker driver, and configurable analog output.

Feature Summary

• Integrated message management system allowing self-managed address locations for multiple messages in standalone mode.
• Dual input channels supporting differential microphone inputs with AGC and single-ended auxiliary analog input.
• Dual output capabilities including a PWM Class D speaker driver for direct speaker connection and a configurable current/voltage analog output.
• Non-volatile message storage using MLS technology providing zero-power retention and high-quality uncompressed audio reproduction.

Applications

• Standalone voice messaging systems requiring simple push-button operation.
• Microcontroller-based voice recording and playback modules utilizing SPI interface.
• Battery-powered electronic devices optimized for low voltage operation.
• Applications requiring customizable sound effects and new message indicators.

Procurement Notes

Verify the specific suffix 'EYR' against the manufacturer's official ordering information table to confirm package type and temperature grade. The datasheet lists SOIC and PDIP packages; ensure the physical footprint matches the design requirements. Confirm availability status as product lifecycles may change. Cross-reference the exact part number with the latest revision of the ISD1700 datasheet to validate pinout compatibility and electrical specifications before procurement.

Selection Notes

Select this component when uncompressed audio quality is required without external DSP processing. Choose based on the desired balance between recording duration and sampling frequency by adjusting the external oscillator resistor. Ensure the application environment falls within the specified commercial or industrial temperature ranges. Verify that the power supply voltage remains within the 2.4 V to 5.5 V range. Consider the standalone versus SPI mode requirements for system integration complexity.

Part Context

The ISD17120EYR belongs to the ISD1700 ChipCorder series, which offers various message duration options. Other models in the series include ISD1730, ISD1760, and ISD17240, providing durations from 20 seconds to 480 seconds depending on the sampling frequency. This series is designed for high-quality voice and music reproduction using solid-state memory technology.

Replacement Considerations

Compatible substitutes within the same family include ISD1730SYI, ISD1760SYI, and ISD17240SYI, provided the message duration requirements align. Verify pinout compatibility across different package types such as SOIC and PDIP. Check for any updates in the manufacturing process or packaging recommendations in the latest datasheet revisions.