电子工程世界电子工程世界电子工程世界

关键词

搜索

型号

搜索

HC-55536

产品描述Continuously Variable Slope Delta-Demodulator (CVSD)
文件大小14KB,共1页
制造商Intersil ( Renesas )
官网地址http://www.intersil.com/cda/home/
下载文档 选型对比 全文预览

HC-55536概述

Continuously Variable Slope Delta-Demodulator (CVSD)

文档预览

下载PDF文档
Low Bit Rate Voiceband Encoders/Decoders
Semiconductor
March 1993
Features
• All Digital
• Requires Few External Parts
ED
ND
ME
M
S
Continuously Variable Slope
Delta-Demodulator (CVSD)
CO
IGN
E
R
ES
OT
W D
Description
N
NE
OR
F
The HC-55536 is a CMOS integrated circuit used to convert
serial NRZ digital data to an analog (voice) signal. Conver-
sion is by delta demodulation, using the Continuously
Variable Slope (CVSD) method of demodulation.
While signals are compatible with other CVSD circuits, the
internal design is unique. The analog loop filters have been
replaced by digital filters which use very low power and
require no external timing components. This digital approach
allows inclusion of many desirable features, which otherwise
would be difficult to implement. The device is usable from
9Kbits/s to above 64kbits/s, and may be easily configured
with the HC-55564 CVSD for a complete transmit/receive
voice channel.
HC-55536
• Low Power Drain: 1.5mW from Single 3V to 6V Supply
• Time Constants Determined by Clock Frequency; No
Calibration or Drift Problems; Automatic Offset
Adjustment
• Filter Reset by Digital Control
• Automatic Overload Recovery
• Automatic “Quiet” Pattern Generation
Applications
• Voice Decoder for Digital Systems and Speech
Syntheses
• Voicemail
• Audio Manipulations; Delay Lines, Echo Generation/
Suppression, Special Effects, etc.
• Pagers/Satellites
Ordering Information
PART
NUMBER
HC1-55536-5
HC1-55536-9
HC3-55536-5
HC3-55536-9
TEMP.
RANGE (
o
C)
0 to 75
-40 to 85
0 to 75
-40 to 85
PACKAGE
14 Ld CERDIP
14 Ld CERDIP
14 Ld PDIP
14 Ld PDIP
PKG. NO.
Pinout
HC-55536
(PDIP, CERDIP)
TOP VIEW
Functional Diagram
(13) (12)
FORCE ZERO
DIGITAL IN
VDD 1
NC 2
AOUT 3
NC 4
NC 5
NC 6
NC 7
14 NC
13 FZ
12 DIGITAL INPUT
11 NC
10 NC
9 CLOCK
8 DIGITAL GND
Z
O
10 BIT
DAC
10
SIGNAL
ESTIMATE
DIGITAL FILTER
1.0msec
3 BIT
SHIFT
REGISTER
1
SYLLABIC
DIGITAL
FILTER
4.0msec
6
DIGITAL
MODULATOR
+1
6
A
OUT
(3)
CLOCK
(9)
V
DD
(1)
DIGITAL GND
(8)
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
©
Harris Corporation 1997
File Number
2888.1
4-252

HC-55536相似产品对比

HC-55536 HC1-55536-5 HC1-55536-9 HC3-55536-5 HC3-55536-9
描述 Continuously Variable Slope Delta-Demodulator (CVSD) Continuously Variable Slope Delta-Demodulator (CVSD) Continuously Variable Slope Delta-Demodulator (CVSD) Continuously Variable Slope Delta-Demodulator (CVSD) Continuously Variable Slope Delta-Demodulator (CVSD)
基于430单片机三表(水表)学习
最近在学习水表,明年想去一家仪表公司实习,但发现网上能找的资料很有限,基于单片机(430、PIC等)的水表实在很少...远程抄表系统是未来发展趋势,想先从基础点的学起,比如单干簧管脉冲计数 ......
f166783980 微控制器 MCU
求助
"如果ToolsPubkey.bat运行的时候提示pubkey命令窗口出现任何can not open …… 或者是 diff pubkey等字样"。如何解决? ...
lzy328 PCB设计
如何创建和配置一个430工程
自己写的,而且写得比较基础,比较适合刚接触的人,楼下轻拍。...
bihu 微控制器 MCU
美国国家半导体推出业界首款集成噪声抑制技术的模拟音频子系统
美国国家半导体推出业界首款集成噪声抑制技术的模拟音频子系统  采用这款PowerWise子系统的手机可以抑制背景噪声,确保传送的语音更清晰自然,而且系统功耗极低 美国国家半导体 时间:2010年 ......
安_然 模拟电子
FPGA菜鸟问题
做啦一个2选一,程序编译成功,仿真的时候没看到波形是怎么回事?...
870027359 FPGA/CPLD
如何操作手机通讯录中的数据?
我们小组在实训,现在需要提取手机通讯录中的数据,还有将外部的通讯录覆盖到手机的通讯录中?这里需要哪些关键技术呢?我们都不太懂个这些,望哪位前辈指点!...
fourcute 嵌入式系统

 
EEWorld订阅号

 
EEWorld服务号

 
汽车开发圈

 
机器人开发圈

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 大学堂 TI培训 Datasheet 电子工程 索引文件: 2466  826  1448  469  98  52  29  45  25  55 

器件索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

北京市海淀区中关村大街18号B座15层1530室 电话:(010)82350740 邮编:100190

电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved