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参数资料
| 型号： | MK3754DLFTR |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 54 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封装： | 0.150 INCH, LEAD FREE, SOIC-8 |
| 文件页数： | 1/6页 |
| 文件大小： | 99K |
| 代理商： | MK3754DLFTR |
MK3754
MDS 3754 H
1
Revision 072805
Integrat ed Circuit Systems ● 525 Race Stre et, San Jo se, CA 9 5126 ● te l (40 8 ) 2 97-12 01 ● www.ics t.co m
LOW COST 54 MHZ 3.3 VOLT VCXO
Description
The MK3754D and MK3754B are drop-in replacements
for the MK3754S device. Compared to these earlier
devices the MK3754D and MK3754B offer a wider
operating frequency range and improved power supply
noise rejection.
The MK3754 is ICS’ lowest cost, low jitter, high
performance 3.3 Volt VCXO and PLL clock synthesizer
designed to replace expensive 54 MHz VCXOs. The
on-chip Voltage Controlled Crystal Oscillator accepts a
0 to 3.3 V input voltage to vary the output clocks by
±100 ppm. Using ICS’ patented VCXO and
analog/digital Phase-Locked Loop (PLL) techniques,
the device uses an inexpensive external 13.5 MHz
pullable crystal input to produce a 54 MHz output clock.
The MK3754D exhibits a moderate VCXO gain of
120 ppm/V typical, when used with a high quality
external pullable quartz crystal. The MK3754B offers a
higher VCXO gain of 150 ppm/V. The higher intrinsic
VCXO gain of the MK3754B may help compensate for
the reduced pullability of a low quality crystal used in
some applications. However, higher VCXO gain may
also increase clock output phase noise.
The frequency of the on-chip VCXO is adjusted by an
external control voltage input into pin VIN. Because
VIN is a high impedance input, it can be driven directly
from an PWM RC integrator circuit. Frequency output
increases with VIN voltage input. The usable range of
VIN is 0 to 3 V.
Features
MK3754D and MK3754B are drop-in upgrades to the
earlier MK3754S device
Packaged in 8-pin SOIC
Available in Pb (lead) free package
Operating voltage of 3.3 V
Uses an inexpensive 13.500 MHz external crystal
On-chip VCXO (patented) with pull range of 200 ppm
(minimum)
VCXO turning voltage of 0 to 3.3V
12 mA output drive capability at TTL levels
Advanced, low power, sub-micron CMOS process
MK3754D is Recommended for New Designs.
Block Diagram
54 M H z
X1
X2
Vo ltage
Con trolled
C rystal
O scillator
VIN
13.5 M H z
Pullable
C rystal
PL L/Clo ck
Syn thesis
Circu itry
VD D
GND
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MK3754DTR | 功能描述:IC VCXO/PLL CLK SYNTHESIZR 8SOIC RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 标准包装:2,000 系列:- 类型:PLL 时钟发生器 PLL:带旁路 输入:LVCMOS，LVPECL 输出:LVCMOS 电路数:1 比率 - 输入:输出:2:11 差分 - 输入:输出:是/无 频率 - 最大:240MHz 除法器/乘法器:是/无 电源电压:3.135 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:带卷 (TR) |
| MK3754S | 制造商:ICS 制造商全称:ICS 功能描述:Low Cost 54 MHz 3.3 Volt VCXO |
| MK3754STR | 制造商:ICS 制造商全称:ICS 功能描述:Low Cost 54 MHz 3.3 Volt VCXO |
| MK3771-1 | 制造商:ICS 制造商全称:ICS 功能描述:USING MICROCLOCKS INTEGRATED VCXO PRODUCTS |
| MK3771-17 | 制造商:ICS 制造商全称:ICS 功能描述:VCXO and HDTV Set-Top Clock Source |
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