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tÉlÉcharger isd1420 datasheet pdf

®
ISD1400 Series
Single-Chip Voice Record/Playback Devices
16- and 20-Second Durations
FEATURES

Easy-to-use single-chip voice Record/
Playback solution

Fully addressable to handle multiple
messages

High-quality, natural voice/audio
reproduction

100-year message retention (typical)

100,000 record cycles (typical)

Push-button interface
– Playback can be edge- or levelactivated

On-chip clock source

No algorithm development required

Single +5 volt power supply

Available in die form, DIP, and SOIC
packaging

Industrial temperature (-40°C to +85°C)
versions available

Single-chip durations of 16 and 20
seconds

Automatic power-down mode
– Enters standby mode immediately
following a Record or Playback
cycle
1
– Standby current 0.5 µA (typical)

Zero-power message storage
– Eliminates battery backup circuits
ISD1400 SERIES SUMMARY
Minimum Duration
(Seconds)
Input Sample Rate
(KHz)
Typical Filter
Pass Band (KHz)
ISD1416
16
8.0
3.3
ISD1420
20
6.4
2.6
Part
Number
Information Storage Devices, Inc.
1–59
ISD1400 Series
GENERAL DESCRIPTION
DETAILED DESCRIPTION
Information Storage Devices’ ISD1400 ChipCorder® Series provides high-quality, single-chip
record/playback solutions to short-duration messaging applications. The CMOS devices include
an on-chip oscillator, microphone preamplifier,
automatic gain control, antialiasing filter, smoothing filter, and speaker amplifier. A minimum
record/playback subsystem can be configured
with a microphone, a speaker, several passives,
two push-buttons, and a power source.
Speech/Sound Quality
The ISD1400 Series includes devices offered at
6.4 and 8.0 KHz sampling frequencies, allowing
the user a choice of speech quality options. The
speech samples are stored directly into on-chip
nonvolatile memory without the digitization and
compression associated with other solutions.
Direct analog storage provides a very true, natural
sounding reproduction of voice, music, tones, and
sound effects not available with most solid-state
digital solutions.
Recordings are stored in on-chip nonvolatile
memory cells, providing zero-power message
storage. 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,
providing high-quality, solid-state voice reproduction.
Duration
To meet end system requirements, the ISD1400
Series offers single-chip solutions at 16 and 20
seconds.
EEPROM Storage
One of the benefits of ISD’s ChipCorder technology is the use of on-chip nonvolatile memory,
providing zero-power message storage. The message is retained for up to 100 years typically
without power. In addition, the device can be rerecorded typically over 100,000 times.