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參數資料
| 型號： | SCG2500AI-019.44M |
| 廠商： | CONNOR WINFIELD CORP |
| 元件分類： | 時鐘產生/分配 |
| 英文描述： | 51.84 MHz, OTHER CLOCK GENERATOR, DSO14 |
| 封裝： | 0.78 X 0.83 X 0.35 INCH, DIL-14 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 938K |
| 代理商： | SCG2500AI-019.44M |
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
SCG2500A
I
Synchronous Clock
Generator
US Headquarters:
630-851-4722
European Headquarters:
+353-61-472221
General Description
The SCG2500AI is a mixed-signal phase lock loop
generating CMOS outputs from an intrinsically low jitter
voltage controlled crystal oscillator. The SCG2500AI is
based on Connor-Winfield’s SCG2500 series product line.
The SCG2500AI can lock to one of two possible
reference inputs at 8 kHz that are selectable using one
input select pin. The SCG2500AI has an improved filter
compared to the SCG2500. The new filter allows the
SCG2500AI to more closely track the selected input
reference and lowers switching MTIEs.
The SCG2500AI 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. LOL alarm is active when the phase
error exceeds 1us. 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. Phase alignment of the 8 kHz output to
the input cannot be guaranteed with dual input units.
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.
Tri-State is not available with this model.
Features
Industrial Temperature Range
(-40°- 85°C)
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
Ref_In
Osc_Out
Ref_Out
8 kHz
19.44 MHz
8 kHz
51.84 MHz
8 kHz
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| SCG4500-155.52M | 功能描述:IC OSC CLK GEN 155.52MHZ OUT SMD RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發生器，PLL，頻率合成器 系列:- 標準包裝:27 系列:Precision Edge® 類型:頻率合成器 PLL:是 輸入:PECL，晶體 輸出:PECL 電路數:1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/是 頻率 - 最大:800MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 5.25 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件 |
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