ISD1806SY

Overview

The ISD1806SY is a single-chip, single-message voice record/playback device from the ISD1800 series, manufactured by Winbond Technology Corporation. It provides user-selectable durations of 6 to 12 seconds depending on the external resistor connected to the ROSC pin. The CMOS device integrates an on-chip oscillator, microphone preamplifier with automatic gain control, anti-aliasing filter, multilevel nonvolatile storage array, smoothing filter, and an 8Ω speaker amplifier. Recordings are stored directly in natural form within on-chip Flash memory, ensuring zero-power message storage with typical retention of 100 years and endurance of 100,000 record cycles. The device operates on a single +3V supply and features automatic power-down to standby mode (0.5µA typical) after each cycle.

Feature Summary

• Push-button interface supporting both edge-activated (PLAYE) and level-activated (PLAYL) playback modes
• Variable record/playback duration controlled by external resistor selection at the ROSC pin
• Automatic power-down mode entering standby immediately following record or playback cycles
• On-chip 8Ω speaker driver eliminating the need for external amplification components

Applications

• Single-message voice prompts in consumer electronics
• Voice-enabled toys requiring simple recording and playback functionality
• Security systems utilizing voice alerts or status messages
• Industrial equipment signaling with recorded warnings or instructions

Procurement Notes

Verify the specific ordering suffix 'SY' against official manufacturer documentation, as standard datasheets list 'S' for SOIC packages. Confirm package type availability, noting that PDIP variants are restricted to sampling only. Ensure component authenticity through authorized distributors and validate part markings against the provided datasheet specifications.

Selection Notes

Select the ISD1806SY when a maximum recording duration of 12 seconds is sufficient, distinguishing it from the ISD1810 series which supports up to 16 seconds. Choose this model for applications requiring minimal external components due to integrated AGC and speaker drivers. Consider the ROSC resistor value carefully to achieve the desired sample rate and duration trade-off between audio fidelity and recording time.

Part Context

The ISD1806SY belongs to the ISD1800 series of ChipCorder devices, which utilize patented multilevel storage technology for high-quality solid-state voice reproduction. This series includes variants like the ISD1810 for longer durations. The device represents a complete solution for single-message applications, integrating all necessary analog and digital functions onto a single CMOS chip without requiring external algorithm development.

Replacement Considerations

Direct substitutes within the same family include the ISD1810 series for extended duration requirements. For identical 6-12 second performance, verify compatibility with other ISD1806 variants such as ISD1806X (die) or ISD1806P (PDIP), though packaging differences must be accounted for in design implementation.