ISD1620BSYI

Overview

The ISD1620BSYI is a single-message voice record and playback chip from Nuvoton Technology Corporation, designed for applications requiring brief audio messaging. It features an internal FLASH memory capable of recording durations ranging from 6.6 to 40 seconds. The device supports sampling frequencies between 4 kHz and 12 kHz, ensuring adaptable audio quality for various use cases. Operating on a supply voltage range of 2.4 V to 5.5 V, it integrates automatic gain control to maintain consistent signal levels. Packaged in a 16-SOIC surface-mount format, the component operates within a temperature range of -40°C to 85°C, providing robust performance across diverse environmental conditions.

Feature Summary

• Integrates automatic gain control for stable audio output levels
• Utilizes internal FLASH memory for non-volatile voice storage
• Supports variable sampling frequencies for flexible audio quality

Applications

• Single-button message devices
• Automated voice prompts
• Simple audio alert systems

Procurement Notes

Verify the specific suffix 'SYI' corresponds to the 16-SOIC surface-mount package variant rather than other packaging options like DIP. Confirm that the required recording duration falls within the 6.6 to 40-second operational window defined by the datasheet. Ensure the target application environment remains within the specified -40°C to 85°C operating temperature range. Cross-reference the supply voltage requirements with the 2.4 V to 5.5 V specification to guarantee compatibility with the system power design.

Selection Notes

Select this component when a single-message functionality is sufficient for the application, as opposed to multi-message or continuous recording needs. Consider the 16-SOIC package if surface-mount assembly is preferred over through-hole alternatives. Evaluate the need for automatic gain control to simplify microphone interface circuitry. Assess whether the maximum 40-second recording limit meets the content length requirements before choosing this series over longer-duration variants.

Part Context

This part belongs to the ISD1620 series of ChipCorder products, which are specialized for simple voice recording and playback tasks. The series distinguishes itself by using FLASH technology, eliminating the need for complex erase/erase cycles associated with older EEPROM technologies. The ISD1620BSYI represents the surface-mount version of this family, offering design flexibility for modern PCB layouts while maintaining the core single-message architecture established by the series.

Replacement Considerations

The ISD1620BSY is the identical functional counterpart but utilizes different packaging. Verify if the system board layout supports SOIC-16 surface mount components. If through-hole mounting is required, the ISD1620BPIY serves as the pin-compatible alternative in a 16-DIP package. Ensure mechanical constraints allow for the switch between these package types without redesigning the footprint.