ISD1800 provides high-quality, single-chip, single-message, record/playback solutions with a user-selectable duration of 6 to 16 seconds. The CMOS devices include an on-chip oscillator (with external control), microphone preamplifier, automatic gain control, anti-aliasing filter, multilevel storage array, smoothing filter, and speaker amplifier.
A minimum record/playback subsystem can be configured with a microphone, a speaker, several passive components, two pushbuttons, and a power source. Recordings are stored in on-chip nonvolatile memory cells, providing zero-power message storage. Voice and audio signals are stored directly into memory in their natural form, providing high-quality, solid-state voice reproduction.
CHIP: ISD1806 6S; Zero-power message storage Eliminates battery backup circuits 100-year message retention (typical) 100,000 record cycles (typical) On-chip oscillator No algorithm development required
