ISD5108SY

Overview

The ISD5108SY is a single-chip voice record and playback device from the Nuvoton ISD5100 ChipCorder series, housed in a 28-lead Small Outline Integrated Circuit (SOIC) package. It provides an analog recording duration of 4 to 8 minutes using patented multilevel storage technology that stores audio signals directly into solid-state memory without compression. The device supports dual storage capabilities for both analog voice data and digital information, such as phone numbers or system parameters. It operates on a supply voltage ranging from +2.7V to +3.3V and features a standard I2C serial interface for control, requiring only two lines for address and command operations.

Feature Summary

• Integrated single-chip solution combining voice recording, playback, and digital data storage with zero-power retention.
• Supports flexible audio path configuration including full-duplex conversation recording, voice memos, and answering machine functions.
• Features built-in automatic gain control, power amplifier, speaker driver, and volume control to minimize external circuitry.
• Utilizes a 2-wire I2C serial interface for microcontroller communication, supporting both Standard and Fast modes.

Applications

• Cellular phones and portable communication devices
• Automotive communications systems
• GPS and navigation systems
• In-terminal answering machines

Procurement Notes

Verify the specific ordering suffix 'SY' against the manufacturer's official datasheet to confirm it corresponds to the SOIC package variant. Ensure compatibility with the required logic interface voltage levels, as the device supports both 2.0V and 3.0V interface options. Confirm that the selected component meets the commercial temperature range specifications if used in non-industrial environments.

Selection Notes

Select the ISD5108SY when a recording duration between 4 and 8 minutes is required. Consider this part for applications needing simultaneous storage of analog voice messages and digital configuration data within a single chip. Evaluate the I2C interface requirements and ensure the host microcontroller can manage the serial protocol for address and command loading.

Part Context

The ISD5108SY belongs to the ISD5100 ChipCorder series, which enhances the previous ISD5000 architecture by adding I2C control and digital storage capabilities. This series includes variants with different durations: ISD5102 (1-2 min), ISD5104 (2-4 min), ISD5108 (4-8 min), and ISD5116 (8-16 min). All models share the same core multilevel flash technology and integrated audio processing blocks.

Replacement Considerations

Direct replacements within the same family include the ISD5108EYI, which offers identical functionality but in a TSSOP-28 package. For different duration requirements, consider the ISD5104 for shorter recordings or the ISD5116 for longer durations, provided the pinout and interface remain compatible.