GENERAL DESCRIPTION
Nuvoton’s ISD1800 ChipCorder® provides high-quality, single chip, single-message, record/playback solution with user-selectable durations 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.
FEATURES
• Easy-to-use single-chip, single-message voice record/playback solution
• High-quality, natural voice/audio reproduction
• Push-button interface
o Playback can be edge- or level-activated
• Variable record/playback duration controlled by external resistor selection, which sets sample rate.
• Automatic power-down mode
o Enters standby mode immediately following a record or playback cycle
o 0.5 µA standby current (typical)
• On-chip 8Ω speaker driver
• Zero-power message storage
o Eliminates battery backup circuits
• 100-year message retention (typical)
• 100,000 record cycles (typical)
• On-chip oscillator
• No algorithm development required
• Single +3 volt power supply
• Available in die form
o 28-pin 300mil SOIC available for samples only
o 28-pin 600mil PDIP available for samples only