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LTC6905HS5#PBF

更新时间： 2024-02-10 02:01:45
品牌 Logo 应用领域
凌特 - Linear 振荡器
页数 文件大小 规格书
8页 120K
描述
LTC6905 - 17MHz to 170MHz Resistor Set SOT-23 Oscillator; Package: SOT; Pins: 5; Temperature Range: -40°C to 125°C

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LTC6905HS5#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SOT包装说明：VSSOP, TSOP5/6,.11,37
针数：5Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.4模拟集成电路 - 其他类型：PLL FREQUENCY SYNTHESIZER
JESD-30 代码：R-PDSO-G5JESD-609代码：e3
长度：2.9 mm湿度敏感等级：1
功能数量：1端子数量：5
最高工作温度：125 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：VSSOP
封装等效代码：TSOP5/6,.11,37封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
电源：3/5 V认证状态：Not Qualified
座面最大高度：1 mm子类别：Other Analog ICs
最大供电电流 (Isup)：20 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：2.7 V标称供电电压 (Vsup)：3 V
表面贴装：YES技术：CMOS
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.95 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：1.625 mmBase Number Matches：1

LTC6905HS5#PBF 数据手册

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LTC6905  
17MHz to 170MHz  
Resistor Set SOT-23 Oscillator  
U
FEATURES  
DESCRIPTIO  
The LTC®6905 precision, programmable silicon oscillator  
is easy to use and occupies very little board space. It  
requires only a single resistor to set the output frequency  
from 17MHz to 170MHz with a typical frequency error of  
0.5% or less.  
■
One External Resistor Sets the Frequency  
■
Fast Start-Up Time: 100µs Typical  
■
■
Frequency Range: 17MHz to 170MHz  
Frequency Error ±0.5% Typ 17MHz to 170MHz  
(TA = 0°C to 70°C, Over All Settings)  
±20ppm/°C Temperature Stability  
Rise Time: 0.5ns, CL = 5pF  
Timing Jitter: 50ps at 170MHz  
50% ±2.5% Duty Cycle  
6mA Typical Supply Current, fOSC = 100MHz  
CMOS Output Drives 500Ω Load (VS = 3V)  
Operates from a Single 2.7V to 5.5V Supply  
Low Profile (1mm) ThinSOTTM Package  
■
■
■
■
■
■
■
■
The LTC6905 operates with a single 2.7V to 5.5V power  
supply and provides a rail-to-rail, 50% duty cycle square  
waveoutput.TheCMOSoutputdriverensuresfastrise/fall  
times and rail-to-rail switching. Operation is simple: A  
singleresistor, RSET, between10Kto25Kisusedtosetthe  
frequency, and an internal three-state divider (DIV input)  
allows for division of the master clock by 1, 2 or 4,  
providing three frequencies for each RSET value.  
U
The LTC6905 features a proprietary feedback loop that  
linearizes the relationship between RSET and frequency,  
eliminating the need for tables to calculate frequency. The  
oscillator can be easily programmed using the simple  
formula outlined below:  
APPLICATIO S  
■
High Frequency Precision Oscillator  
■
High Speed Data Bus Clock  
■
Fixed Crystal Oscillator Replacement  
■
Ceramic Oscillator Replacement  
1, DIV Pin = V+  
⎧
⎪
⎛168.5MHz •10kΩ  
⎞
1
⎠ N  
, LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a  
trademark of Linear Technology Corporation. All other trademarks are the property of their  
respective owners. Protected by U.S. Patents, including 6614313, 6342817.  
fOSC  
=
+ 1.5MHz • , N = 2, DIV Pin = Open  
⎜
⎟
⎨
⎝
RSET  
⎪
4,DIV Pin = GND  
⎩
For higher accuracy, fixed frequency versions that include  
an internal frequency-setting resistor, see the LTC6905-  
XXX Series datasheet.  
U
Typical Distribution of Frequency Error, TA = 25°C  
TYPICAL APPLICATIO  
60  
+
V
R
= 3V  
= 12k  
SET  
DIV = 1  
50  
Basic Connection  
40  
30  
17.225MHz ≤ f  
≤ 170MHz  
OSC  
5V  
1
2
3
5
+
V
OUT  
LTC6905  
0.1µF  
5V  
20  
10  
0
10k ≤ R  
≤ 25k  
SET  
GND  
SET  
÷1  
÷4  
4
÷2  
DIV  
OPEN  
6905 TA01  
–0.5  
–0.3  
–0.1  
0.1  
0.3  
0.5  
6905 TA02  
% ERROR  
NOTE: RESISTOR, R , TOLERANCE WILL ADD  
SET  
TO THE FREQUENCY ERROR  
6905fa  
1
12345678

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