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參數(shù)資料
| 型號： | ICS84314 |
| 英文描述： | Dual J-K Flip-Flops With Clear 14-PDIP 0 to 70 |
| 中文描述： | 350MHz頻段，CRYSTAL-TO-3.3V/2.5V LVPECL的頻率合成瓦/扇出緩沖器 |
| 文件頁數(shù)： | 10/18頁 |
| 文件大小： | 222K |
| 代理商： | ICS84314 |
84314AY
www.icst.com/products/hiperclocks.html
REV. C JANUARY 27, 2005
10
Integrated
Circuit
Systems, Inc.
ICS84314
350MH
Z
, C
RYSTAL
-
TO
-3.3V/2.5V LVPECL
F
REQUENCY
S
YNTHESIZER
W
/F
ANOUT
B
UFFER
Figure 5. C
RYSTAL
I
NPU
t I
NTERFACE
C
RYSTAL
I
NPUT
I
NTERFACE
The ICS84314 has been characterized with 18pF parallel resonant
crystals. The capacitor values, C1 and C2, shown in Figure 5 below
were determined using a 25MHz, 18pF parallel resonant crystal and
were chosen to minimize the ppm error. The optimum C1 and C2
values can be slightly adjusted for different board layouts.
C1
22p
X1
18pF Parallel Crystal
C2
22p
XTAL2
XTAL1
T
ERMINATION
FOR
2.5V LVPECL O
UTPUT
Figure 4Aand Figure 4Bshow examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminat-
ing 50
to V
CC
- 2V. For V
CC
= 2.5V, the V
CC
- 2V is very close to
ground level. The R3 in Figure 4A can be eliminated and the
termination is shown in Figure 4C.
F
IGURE
4C. 2.5V LVPECL T
ERMINATION
E
XAMPLE
R2
50
Zo = 50 Ohm
VCCO=2.5V
R1
50
Zo = 50 Ohm
+
-
2.5V
2,5V LVPECL
Driver
F
IGURE
4B. 2.5V LVPECL D
RIVER
T
ERMINATION
E
XAMPLE
VCCO=2.5V
R1
50
R2
50
Zo = 50 Ohm
R3
18
2,5V LVPECL
Driver
Zo = 50 Ohm
+
-
2.5V
F
IGURE
4A. 2.5V LVPECL D
RIVER
T
ERMINATION
E
XAMPLE
R2
62.5
2.5V
2,5V LVPECL
Driver
R3
250
Zo = 50 Ohm
Zo = 50 Ohm
R4
62.5
2.5V
+
-
R1
250
VCCO=2.5V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS84314AYLF | 350MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
| ICS84314AYLFT | 350MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
| ICS8431AMI-21 | 350MHZ, LOW JITTER, CRYSTAL OSCILLATOR-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8431AMI-21LF | 350MHZ, LOW JITTER, CRYSTAL OSCILLATOR-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS8431AMI-21LFT | 350MHZ, LOW JITTER, CRYSTAL OSCILLATOR-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS84314-02 | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
| ICS84314A02L | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
| ICS84314AY | 制造商:ICS 制造商全稱:ICS 功能描述:350MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
| ICS84314AY02 | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
| ICS84314AY-02 | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V/2.5V LVPECL FREQUENCY SYNTHESIZER W/FANOUT BUFFER |
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