ISD5104SYI

Overview

The ISD5104SYI is a single-chip voice record and playback IC from the Nuvoton ISD5100 ChipCorder series, housed in a 28-SOIC package. It supports multiple messages with a duration of 2 minutes 11 seconds to 4 minutes 22 seconds. The device operates on a supply voltage of 2.7 V to 3.3 V and features an I2C interface for control. Sampling frequencies range from 4 kHz to 8 kHz, with a filter passband of 1.7 kHz to 3.4 kHz. It includes automatic gain control, digital data storage capabilities, and volume control.

Feature Summary

• Integrated single-chip solution for analog and digital data storage without compression algorithms.
• Dual operating modes allowing flexible message management via I2C serial interface.
• Built-in audio processing including automatic gain control, auto mute, and speaker driver.

Applications

• Cellular phone answering machines and voice memo recording.
• Automotive communication systems and GPS navigation interfaces.
• Portable consumer electronics requiring low-power voice messaging.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'SYI' matches the required industrial temperature range and package variant. Check for end-of-life status and ensure replacement parts like the I3800FYI are validated for pin compatibility and electrical specifications before integration into new designs.

Selection Notes

Select this model when a duration between 2 and 4 minutes is sufficient for the application. Ensure the host system supports I2C communication at standard or fast mode speeds. Verify that the 2.7V to 3.3V supply voltage aligns with the target system's power rails. Consider the 28-SOIC package dimensions for PCB layout constraints compared to alternative packaging options.

Part Context

The ISD5104SYI belongs to the ISD5100 ChipCorder family, which provides fully integrated voice recording solutions. This series utilizes Nuvoton's patented multilevel storage technology to store voice signals directly in nonvolatile memory. The ISD5104 specifically offers mid-range capacity within the series, bridging the gap between shorter duration models like the ISD5102 and longer duration models like the ISD5108.

Replacement Considerations

Publicly confirmed substitutes include the I3800FYI. Verify functional equivalence regarding I2C command sets and audio performance characteristics. Ensure the replacement part meets the same industrial temperature range (-40°C to +85°C) and package requirements (28-SOIC) for direct board-level integration.