Datasheet > SCG2500A

SCG2500A

更新时间： 2024-01-27 21:32:16

品牌	Logo	应用领域
CONNOR-WINFIELD		/
页数	文件大小	规格书
12页	790K
描述
Synchronous Clock Generator

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数据手册

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SCG2500A 数据手册

SCG2500A

Synchronous Clock

Generator

2111 Comprehensive Drive

Aurora, Illinois 60505

Phone: 630-851-4722

Fax: 630- 851-5040

www.conwin.com

General Description

Features

The SCG2500A is a mixed-signal phase lock loop

generating CMOS outputs from an intrinsically low jitter

voltage controlled crystal oscillator. The SCG2500A is

based on Connor-Winfield’s SCG2500 series product line.

The SCG2500A can lock to one of two possible

reference inputs at 8 kHz that are selectable using one

input select pin. The SCG2500A has an improved filter

compared to the SCG2500. The new filter allows the

SCG2500A to more closely track the selected input

reference and lowers switching MTIEs.

The SCG2500A provides 3 alarm outputs, Loss of

Reference A, (LOR A) Loss of Reference B, (LOR B), and

Loss of Lock, (LOL) as compared to the SCG2500’s

combined alarms. In the event of a LOL condition, the LOL

alarm will activate in 1us of the next rising edge of the

internal, 8 kHz reference. Switching references within 100

ns will then comply with GR-253-CORE requirements.

LOR A and LOR B independently monitor the input

references. If Both references are lost the unit will go into

Free Run automatically. When both references are lost,

the unit should be forced into Free Run (pin 5 = 1). LOR A

and LOR B can then be monitored until the references

return. Refer to Table 6 for more operational details.

The reference output at 8 kHz is derived from the

oscillator output. Note that the offset between the filtered

output and the reference input will change with each

reference rearrangement.

• Phase Locked Output Frequency

Control

• Intrinsically Low Jitter Crystal

Oscillator

• Two Selectable References @ 8 kHz

• Hitless Reference Switching

• 2 Independent Reference Monitors

• LOL Alarm Output

• Force Free Run Function

• Automatic Free Run Operation upon

loss of both references

• Input Duty Cycle Tolerant

• 3.3 Volt Power Supply

• Small Size: 0.78” x 0.83” x 0.35”

maximum

• Surface Mount, DIL Package

Quick Overview

The package maximum dimensions are .780” x .830” x

.350” on a six layer FR4 board with surface mount pins.

Parts are assembled using high temperature solder to

withstand surface mount reflow processes.

Ref_In

8 kHz

Osc_Out

2.048 MHz

19.44 MHz

51.84 MHz

77.76 MHz

Ref_Out

8 kHz

Tri-State is not available with this model.

8 kHz

US Headquarters:

630-851-4722

European Headquarters:

+353-61-472221

12 3 4 5 6 7...12

中文翻译

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与SCG2500A相关器件

型号	品牌	获取价格	描述	数据表
SCG2500A-019.44M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, DIL-14
SCG2500A-051.84M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, DIL-14
SCG2500AG5-002.048M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, DIL-14
SCG2500AG5-019.44M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, DIL-14
SCG2500AG5-051.84M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, DIL-14
SCG2500AG5-077.76M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, DIL-14
SCG2500G5-001.544M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, 0.780 X 0.830 INCH, 0.350 INCH HEIGHT, DIL-14
SCG2500G5-002.048M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, 0.780 X 0.830 INCH, 0.350 INCH HEIGHT, DIL-14
SCG2500G5-019.44M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, 0.780 X 0.830 INCH, 0.350 INCH HEIGHT, DIL-14
SCG2500G5-020.48M	CONNOR-WINFIELD	获取价格	Support Circuit, 1-Func, 0.780 X 0.830 INCH, 0.350 INCH HEIGHT, DIL-14

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