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參數(shù)資料
| 型號： | IDT5V925QGI |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | XO, clock |
| 英文描述： | CONNECTOR ACCESSORY |
| 中文描述： | 160 MHz, OTHER CLOCK GENERATOR, PDSO16 |
| 封裝： | 0.150 INCH, GREEN, QSOP-16 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大小： | 52K |
| 代理商： | IDT5V925QGI |
5
INDUSTRIAL TEMPERATURE RANGE
IDT5V925
PROGRAMMABLE CLOCK GENERATOR
TEST LOADS AND WAV EFORMS
HOW TO USE THE 5V925
The 5V925 is a general-purpose phase-locked loop (PLL) that can be
used as a zero delay buffer or a clock multiplier. It generates three outputs
at the VCO frequency and one output at the VCO frequency divided by n,
where n is determned by the Mode/Frequency Select input pins S
0
and S
1
.
The PLL will adjust the VCO frequency (within the limts of the Function
Table) to ensure that the input frequency equals the Q/N frequency.
The 5V925 can accept two types of input signal. The first is a reference
clock generated by another device on the board which needs to be
reproduced with a mnimal delay between the incomng clock and output.
The second is an external crystal. When used in the first mode, the crystal
input (X
1
) should be tied to ground and the crystal output (X
2
) should be left
unconnected.
15pF
150
OUTPUT
V
CC
150
2V
V
TH
= V
CC
/2
0V
1ns
Input Test Waveform
3V
1ns
2V
V
TH
= V
CC
/2
0V
t
R
t
F
V
CC
0.8
0.8
AC Test Load
Output Waveform
FB
CLKIN
X
2
X
1
S
0
S
1
Q/N
Q
0
Q
1
Q
2
5V925
Figure 1
By connecting Q/N to FB (see Figure 1), the 5V925 not only becomes
a zero delay buffer, but also a clock multiplier. With proper selection of S
0
and S
1
, the Q
0
–Q
2
outputs will generate two, three, up to eight times the input
clock frequency. Make sure that the input and output frequency specifica-
tions are not violated (refer to Function Table). There are some applications
where higher fan-out is required. These kinds of applications could be
addressed by using the 5V925 in conjunction with a clock buffer such as the
49FCT3805. Figure 2 shows how higher fan-out with different clock rates
can be generated.
Figure 2
5 COPIES
OF Q/N
5 COPIES
OF Q
49FCT3805
FB
CLKIN
X
2
X
1
S
0
S
1
Q
[2:0]
Q/N
INA
INB
5V925
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PDF描述 |
|---|---|
| IDT5V925 | PROGRAMMABLE CLOCK GENERATOR |
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| IDT5V926PGI | SINGLE OUTPUT CLOCK GENERATOR |
| IDT5V928 | 8 OUTPUT CLOCK GENERATOR |
相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| IDT5V926APGGI | 功能描述:IC CLOCK GEN PLL 160MHZ 16TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:2,000 系列:- 類型:PLL 頻率合成器 PLL:是 輸入:晶體 輸出:時鐘 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/無 頻率 - 最大:1GHz 除法器/乘法器:是/無 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-LSSOP（0.175"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:NJW1504V-TE1-NDNJW1504V-TE1TR |
| IDT5V926APGGI8 | 制造商:Integrated Device Technology Inc 功能描述:IC CLOCK GEN PLL 160MHZ 16TSSOP |
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| IDT5V927PGGI8 | 功能描述:IC CLOCK GENERATOR QUAD 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| IDT5V928PGGI | 功能描述:IC CLOCK GENERATOR OCTAL 24TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:- 標準包裝:1,000 系列:Precision Edge® 類型:時鐘/頻率合成器 PLL:無 輸入:CML，PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?（3x3） 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND |
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