Datasheet > ZL49020

ZL49020

更新时间： 2024-11-30 22:34:27

品牌	Logo	应用领域
加拿大卓联 - ZARLINK		/
页数	文件大小	规格书
14页	356K
描述
Wide Dynamic Range DTMF Receiver

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数据手册

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ZL49020 数据手册

ZL49010/1, ZL49020/1, ZL49030/1

Wide Dynamic Range DTMF Receiver

Data Sheet

September 2003

Features

•

Wide dynamic range (50dB) DTMF Receiver

Call progress (CP) detection via cadence

indication

Ordering Information

ZL49010DAA

ZL49011DAA

ZL49020DAA

ZL49021DAA

ZL49030DCA

ZL49030DCB

ZL49030DDA

ZL49030DDB

ZL49031DCA

ZL49031DCB

ZL49031DDA

ZL49031DDB

8 Pin PDIP

18 Pin SOIC Tubes

18 Pin SOIC Tape & Reel

20 Pin SSOP Tubes

20 Pin SSOP Tape & Reel

18 Pin SOIC Tubes

18 Pin SOIC Tape & Reel

20 Pin SSOP Tubes

Tubes

•

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 ZL4902x)

•

External clock input (ZL4901x)

Guarantees non-detection of spurious tones

Applications

20 Pin SSOP Tape & Reel

•

Integrated telephone answering machine

End-to-end signalling

Fax Machines

-40°C to +85°C

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

synchronously at the serial data (SD) output. The SD

pin is multiplexed with call progress detector output. In

the presence of supervisory tones, the call progress

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

PWDN

Steering

Digital

Circuit

ESt

DStD

VDD

Guard

Voltage

Bias Circuit

Time

High

Group

Filter

VSS

Parallel to

Serial

Converter

& Latch

ACK

Dial

Tone

Filter

Anti-

alias

Filter

Code

Converter

and

Digital

AGC

Detector

Algorithm

Latch

Low

Group

Filter

Mux

Oscillator

OSC2

and

Clock

Circuit

Energy

Detection

OSC1

(CLK)

To All Chip Clocks

1. ZL49010/1 and ZL49030/1 only.

2. ZL49020/1 and ZL49030/1 only.

3. ZL490x1 only.

Figure 1 - Functional Block Diagram

Zarlink Semiconductor Inc.

Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.

12 3 4 5 6 7...14

中文翻译

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与ZL49020相关器件

型号	品牌	获取价格	描述	数据表
ZL49020/21DAA	MICROSEMI	获取价格	DTMF Signaling Circuit, PDIP8, PLASTIC, 8 PIN
ZL49020/21DAA1	MICROSEMI	获取价格	DTMF Signaling Circuit, PDIP8, LEAD FREE, PLASTIC, 8 PIN
ZL49020DAA	MICROSEMI	获取价格	DTMF Signaling Circuit, PDIP8, PLASTIC, MS-001BA, DIP-8
ZL49020DAA	ZARLINK	获取价格	Wide Dynamic Range DTMF Receiver
ZL49020DAA1	ZARLINK	获取价格	Wide Dynamic Range DTMF Receiver
ZL49021	ZARLINK	获取价格	Wide Dynamic Range DTMF Receiver
ZL49021DAA	ZARLINK	获取价格	Wide Dynamic Range DTMF Receiver
ZL49021DAA1	ZARLINK	获取价格	Wide Dynamic Range DTMF Receiver
ZL49030	ZARLINK	获取价格	Wide Dynamic Range DTMF Receiver
ZL49030/31DCB	MICROSEMI	获取价格	DTMF Signaling Circuit, PDSO18, SOIC-18

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