ISD17120SYI

Overview

The ISD17120SYI 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 33 to 120 seconds, depending on the sampling frequency. The sampling frequency is adjustable between 4 kHz and 12 kHz via an external oscillator resistor. Operating voltage spans 2.4 V to 5.5 V. The device supports standalone push-button operation or microcontroller SPI mode. Key internal components include an on-chip oscillator, microphone preamplifier with Automatic Gain Control (AGC), Multi-Level Storage (MLS) array, volume control, and a PWM Class D speaker driver.

Feature Summary

• Integrated message management system for self-managing address locations in standalone mode
• Dual operating modes: Standalone (Push-Button) and Microcontroller (SPI)
• Non-volatile message storage using patented Multi-Level Storage (MLS) technology
• Dual output channels including differential PWM Class D speaker driver and configurable analog output

Applications

• Electronic systems requiring simple push-button voice messaging
• Battery-powered applications due to wide voltage range and power-down capabilities
• Microcontroller-based voice recording and playback systems
• Industrial environments requiring operation across extended temperature ranges

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type matches design requirements, specifically the 28-SOIC variant for this model. Check for lead-free packaging compliance if required by environmental standards. Ensure supply chain stability as availability may vary.

Selection Notes

Select based on required message duration and sampling frequency trade-offs. Higher sampling frequencies provide better audio quality but reduce total recording time. Choose between standalone or SPI mode based on system complexity. Verify operating temperature range suitability for the specific application environment.

Part Context

The ISD17120SYI belongs to the ISD1700 ChipCorder series, which offers various message duration options. Other models in the series include ISD1730, ISD1760, and ISD17240, providing flexibility for different memory requirements. All share similar core functionalities and interface options within the same family.

Replacement Considerations

Public confirmed substitute part numbers include I2361YYI and I3800FYI from Nuvoton Technology Corporation. Verify compatibility with existing circuit designs when substituting.