• 当前位置:
  • 首页
  • >
  • PDF资料
  • >
  • ZL49030DCA PDF文件及第1页内容在线浏览

ZL49030DCA

ZL49030DCA首页预览图
型号: ZL49030DCA
PDF文件:
  • ZL49030DCA PDF文件
  • ZL49030DCA PDF在线浏览
功能描述: Wide Dynamic Range DTMF Receiver
PDF文件大小: 353.47 Kbytes
PDF页数: 共14页
制造商: ZARLINK[Zarlink Semiconductor Inc]
制造商LOGO: ZARLINK[Zarlink Semiconductor Inc] LOGO
制造商网址: http://www.zarlink.com
捡单宝ZL49030DCA
PDF页面索引
120%
1
Zarlink Semiconduc tor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2003, Zarlink Semiconductor Inc. All Rights Reserved.
Features
Wide dynamic range (50dB) DTMF Receiver
Call progress (CP) detection via cadence
indication
4-bit synchronous serial data output
Software controlled guard time for ZL490x0
Internal guard time circuitry for ZL490x1
Powerdown option (ZL4901x & ZL4903x)
3.579MHz crystal or ceramic resonator (ZL4903x
and ZL 4902 x)
External clock input (ZL4901x)
Guarantees non-detection of spurious tones
Applicatio ns
Integrated telephone answering machine
End-to-end signalling
Fax Ma chi nes
Description
The ZL490xx is a family of high performance DTMF
receivers which decode all 16 tone pairs into a 4-bit
binary code. These devices incorporate an AGC for
wide dynamic range and are suitable for end-to-end
signalling. The ZL490x0 provides an early steering
(ESt) logic output to indicate the detection of a DTMF
signal and requires external software guard time to
validate the DTMF digit. The ZL490x1, with preset
internal guard times, uses a delay steering (DStD)
logic output to indicate the detection of a valid DTMF
digit. The 4-bit DTMF binary digit can be clocked out
synchr onously at the s erial data (SD) outpu t. The SD
pin is multiplexed with call progress detector output. In
the presence of supervisory tones, the call progress
September 2003
Ordering Information
ZL49 01 0 DA A 8 Pi n P DIP Tubes
ZL49 011DAA 8 Pi n P DIP Tubes
ZL49 02 0 DA A 8 Pi n P DIP Tubes
ZL49021DAA 8 Pin PDIP Tubes
ZL49 03 0 DCA 18 P i n SOI C Tubes
ZL49030DCB 18 Pin SOIC Tape & Reel
ZL49030DDA 20 Pin SSOP Tubes
ZL49030DDB 20 Pin SSOP Tape & Reel
ZL49031DCA 18 Pin SOIC Tubes
ZL49031DCB 18 Pin SOIC Tape & Reel
ZL49031DDA 20 Pin SSOP Tubes
ZL49031DDB 20 Pin SSOP Tape & Reel
-40°C to +85°C
ZL49010/1, ZL49020/1, ZL49030/ 1
Wide Dynamic Range DTMF Receiver
Data Sheet
Figure 1 - Functional Block Diagram
VDD
VSS
OSC2
1. ZL49010/1 and ZL49030/1 only.
2. ZL49020/1 and ZL49030/1 only.
Voltage
Bias Circuit
AGC
Anti-
alias
Filter
High
Group
Filter
Low
Group
Filter
Steering
Circuit
Digital
Detector
Algorithm
Code
Converter
and
Latch
Digital
Guard
Time
3
Parallel to
Serial
Converter
& Latch
Mux
Energy
Detection
Oscillator
and
Clock
Circuit
To All Chip Cloc k s
Dial
Tone
Filter
ESt
DStD
ACK
SD
1
2
or
3. ZL490x1 only.
PWDN
OSC1
(CLK)
购买、咨询产品请填写询价信息:(3分钟左右您将得到回复)
询价型号*数量*批号封装品牌其它要求
删除
删除
删除
删除
删除
增加行数
  •  公司名:
  • *联系人:
  • *邮箱:
  • *电话:
  •  QQ:
  •  微信:

  • 关注官方微信

  • 联系我们
  • 电话:13714778017
  • 周一至周六:9:00-:18:00
  • 在线客服:

天天IC网由深圳市四方好讯科技有限公司独家运营

天天IC网 ( www.ttic.cc ) 版权所有©2014-2023 粤ICP备15059004号

因腾讯功能限制,可能无法唤起QQ临时会话,(点此复制QQ,添加好友),建议您使用TT在线询价。

继续唤起QQ 打开TT询价