Single-Chip Voice Record/Playback Devices
2- to 16-Minute Durations
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.
FEA TURES
• Single-chip voice record/playback solution
• Single +3 volt supply
• Low-power consumption
• Operating current:
I
CC Play = 15 mA (typical)
I
CC 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
ISD4000 Series
Product
Brief
ISD4000
SERIES
BLOCK
DIAGRAM
XCLK
ANA IN–
ANA IN+
SCLK
SS
MOSI MISO INT
RAC
VCCA VSSA VSSA VSSA VSSD VCCD
Power Conditioning
Device Control
AUDOUT
Amp
AM CAP
Timing
Internal Clock
960K, 1920K, or
3840K Cell
Nonvolatile Multilevel
Storage Array
Analog Transceivers
Sampling Clock
5-Pole Active
Antialiasing Filter
Amp
AutoMute
Feature
5-Pole Active
Smoothing Filter
ISD40000 SERIES CAN BE USED IN VARIOUS APPLICATIONS:
• Cellular phones
• Portable Digital Recorders (PDR)
• Automotive
• Telephone Answering Devices (TAD)
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 mini-
mize pin count.
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