ISD17120SYR

Overview

The ISD17120SYR 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 26 to 120 seconds, with sampling frequencies adjustable between 4 kHz and 12 kHz via an external resistor. The device operates on a supply voltage of 2.4 V to 5.5 V and supports both standalone push-button and SPI microcontroller modes. Key internal components include an on-chip oscillator, microphone preamplifier with Automatic Gain Control (AGC), Multi-Level Storage (MLS) Flash memory, and a PWM Class D speaker driver.

Feature Summary

• Integrated message management system enabling self-managed address locations for multiple messages in standalone mode.
• Dual operating modes allowing either simple push-button control or full microcontroller management via SPI interface.
• Direct drive capability for standard 8 Ω speakers or buzzers through a built-in Pulse Width Modulation (PWM) Class D output.
• Zero-power message storage utilizing patented Multi-Level Storage (MLS) technology without digital compression.

Applications

• Electronic systems requiring high-quality voice prompts and announcements
• Battery-powered devices optimized for low standby current consumption
• Microcontroller-based audio interfaces requiring serial command control

Procurement Notes

Verify the specific package type against the ordering information section of the datasheet, as the ISD1700 series includes SOIC and PDIP options. Confirm that the 'SY' suffix corresponds to the required temperature range and packaging variant for your application environment before finalizing procurement.

Selection Notes

Select this component when a single-chip solution for multi-message recording is needed without external compression algorithms. Ensure the required recording duration aligns with the available sampling frequencies (4 kHz to 12 kHz). Verify that the system can accommodate the necessary external oscillator resistor to set the desired sample rate and message length.

Part Context

The ISD17120SYR belongs to the Nuvoton ISD1700 ChipCorder series, which offers various message duration options including 30, 60, 120, and 240 seconds. This series is designed for applications needing natural voice reproduction and flexible input/output configurations, supporting both differential microphone inputs and auxiliary analog inputs.

Replacement Considerations

Other members of the ISD1700 series, such as ISD1730, ISD1760, and ISD17240, share similar pinouts and operational characteristics but offer different maximum message durations. Verify compatibility if substituting with these variants based on specific recording time requirements.