参数资料
型号: ISD2590X
厂商: Electronic Theatre Controls, Inc.
英文描述: Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations
中文描述: 单芯片语音记录/播放设备32 - ,40 - ,48 - ,64 - ,60 - ,75,90 - ,120秒持续时间
文件页数: 2/28页
文件大小: 213K
代理商: ISD2590X
Product Data Sheets
ISD2500 Series
1–80
-
1
GENERAL DESCRIPTION
Information Storage Devices' ISD2500 Chip-
Corder
Series provides high-quality, single-chip
Record/Playback solutions for 32- to 120-second
messaging applications. The CMOS devices
include an on-chip oscillator, microphone pream-
plifier, automatic gain control, antialiasing filter,
smoothing filter, speaker amplifier, and high den-
sity multi-level storage array. In addition, the
ISD2500 is microcontroller compatible, allowing
complex messaging and addressing to be
achieved.
Recordings are stored in on-chip nonvolatile mem-
ory cells, providing zero-power message storage.
This unique, single-chip solution is made possible
through ISD's patented multilevel storage technol-
ogy. Voice and audio signals are stored directly
into memory in their natural form, providing high-
quality, solid-state voice reproduction.
DETAILED DESCRIPTION
Speech/Sound Quality
The ISD2500 Series includes devices offered at
4.0, 5.3, 6.4, and 8.0 KHz sampling frequencies,
allowing the user a choice of speech quality
options. Increasing the duration within a product
series decreases the sampling frequency and
bandwidth, which affects sound quality. Please
refer to the ISD2500 Series Summary table on
page 1-79 to compare filter pass band and product
durations.
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.
Duration
To meet end system requirements, the ISD2500
Series offers single-chip solutions at
64
*, 60, 75, 90, and 120 seconds. Parts may also
be cascaded together for longer durations.
32*, 40*, 48*,
ISD2560/75/90/120 DEVICE BLOCK DIAGRAM
*
Advance information: ISD2532/40/48/64 devices.
Amp
Pre-
V
CCA
V
CCD
A0
A2 A3 A4 A5
A7 A8 A9
A6
OVF P/R
CE EOM
PD
XCLK
ANA IN
ANA OUT
MIC
MIC REF
AGC
D
480 K Cell
Nonvolatile
Multilevel Storage
Array
Amp
AUX IN
SP+
SP–
V
SSA
V
SSD
A1
Timing
Internal Clock
Power Conditioning
Address Buffers
Device Control
Analog Transceivers
Sampling Clock
Mux
Automatic
Gain Control
(AGC)
5-Pole Active
Antialiasing Filter
5-Pole Active
Smoothing Filter
R
相关PDF资料
PDF描述
ISD2500 Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations
ISD2560E Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations
ISD2560EI Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations
ISD2575E Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations
ISD2575EI Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations
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