isd1000a ETC-unknow, isd1000a Datasheet - Page 2

• Manufacturer Part Number: isd1000a
• Description: Single-chip Voice Record/playback Devices 16- And 20-second Durations
• Manufacturer: ETC-unknow

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ISD1000A Series
GENERAL DESCRIPTION
Information Storage Devices’ ISD1000A Chip-
Corder
record/playback solutions for 16- and 20-second
messaging applications. The CMOS devices
include an on-chip oscillator, microphone pream-
plifier, automatic gain control, antialiasing filter,
smoothing filter, and speaker amplifier. In addi-
tion, the ISD1000A Series is fully microprocessor-
compatible, allowing complex messaging and
addressing to be achieved.
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 stor-
age technology. Voice and audio signals are
stored directly into memory in their natural form,
providing high-quality, solid-state voice reproduc-
tion.
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ISD1000A SERIES BLOCK DIAGRAM
ANA OUT
MIC REF
ANA IN
XCLK
AGC
MIC
®
Series provides high-quality, single-chip
V
CCA
Power Conditioning
Amp
Pre-
V
SSA
Amp
V
SSD
Gain Control
Automatic
Internal Clock
(AGC)
V
CCD
Antialiasing Filter
A0
5-Pole Active
A1
A2 A3 A4 A5
Address Buffers
Timing
Analog Transceivers
Multilevel Storage
A6
Sampling Clock
Nonvolatile
128 K Cell
A7
DETAILED DESCRIPTION
The ISD1000A ChipCorder Series devices are
designed to Record and Play back audio and
voice information in a single chip with a minimum
of circuit complexity. This compact, easy-to-use,
nonvolatile, low-power solution has been made
possible by ISD's multilevel storage technology —
a breakthrough in storage technology in EEPROM.
ISD’s multilevel storage technology results in stor-
age density that is eight times greater than digital
memory. The ISD1000A nonvolatile analog array
consists of 128K cells — the equivalent of 1 Mbits
of digital storage.
The ISD1000A Series eliminates the need for dig-
ital conversion, digital compression, and voice
synthesis techniques which often compromise
voice quality and are more complicated to use.
The ISD1000A Series includes signal conditioning
circuits and control functions which enable a com-
plete, high-quality Recording and Playback sys-
tem in a single device. The ISD1000A is available
in two versions, which store voice in 16- or 20-sec-
ond arrays. Additional devices may be cascaded
Array
PD
Device Control
P/R
Smoothing Filter
5-Pole Active
CE
EOM
AUX IN
Mux
Product Data Sheets
Amp
R
SP–
SP+