Single-Chip Voice Record/Playback Devices 2- to 16-Minute Durations

The ISD4000 ChipCorder® Products provide high-quality, 3-volt, single-chip record/playback
solutions for 2- to 16-minute messaging applications which are ideal for cellular phones and other
portable products. The CMOS based devices include an oscillator, antialiasing filter, smoothing
filter, AutoMute® feature, audio amplifier, and high density, multilevel Flash storage array. The ISD4000 series is designed to be used in a microprocessor- or microcontroller-based system. Address and control are accomplished through a Serial Peripheral Interface (SPI) or Microwire serial interface to minimize pin count.
Recordings are stored in on-chip nonvolatile memory cells, providing zero-power message stor
age. This unique, single-chip solution is made possible through ISD’s patented multilevel storage
technology. Voice and audio signals are stored directly into memory in their natural form, provid
ing high-quality, solid-state voice reproduction.

FEATURES
• Single-chip voice record/playback solution
• Single +3 volt supply
• Low-power consumption
• Operating current:
        ICC Play = 15 mA (typical)
        ICC Rec = 25 mA (typical)
• Standby current 1 µA (typical)
• Single-chip durations of 2, 2.5, 3, 4, 5, 6, 8, 10, 12 and 16 minutes
• High-quality, natural voice/audio reproduction
• AutoMute feature provides background noise attenuation during periods of silence
• No speech compression algorithm development required
• Microcontroller SPI or Microwire serial interface
• Fully addressable to handle multiple messages
• Nonvolatile message storage
• Power consumption controlled by SPI or Microwire control register
• 100-year message retention (typical)
• 100K record cycles (typical)
• On-chip clock source
• Available in die form, PDIP, SOIC, TSOP and chip scale packaging (CSP)
• Extended temperature (–20°C to +70°C) and industrial temperature (–40°C to +85°C) versions available

ISD40000 SERIES CAN BE USED IN VARIOUS APPLICATIONS:
• Cellular phones
• Portable Digital Recorders (PDR)
• Automotive
• Telephone Answering Devices (TAD)