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參數(shù)資料
| 型號： | XRT8020 |
| 廠商： | Exar Corporation |
| 英文描述： | 650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS |
| 中文描述： | 650 MHz時鐘 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 425K |
| 代理商： | XRT8020 |
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
XRT8020
650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
NOVEMBER 2003
REV. 1.0.2
DESCRIPTION
The XRT8020 is a monolithic analog phase locked
loop that provides a high frequency LVDS clock out-
put, using a low frequency crystal or reference clock.
It is designed for SONET/SDH and other low jitter ap-
plications.The high performance of the IC provides a
very low jitter LVDS clock output up to 650 MHz, while
operating at 3.3 volts. The XRT8020 has a selectable
8x, 16x or 32x internal multiplier for an external crys-
tal or signal source. The Output Enable pin provides
a true disconnect for the LVDS output. The very com-
pact (4 x 4 mm) low inductance package is ideal for
high frequency operation.
APPLICATIONS
Gigabit Ethernet
SONET/SDH
SPI - 4 Phase 2
8x, 16x or 32x Clock Multiplier for Computer and
Telecommunication Systems
FEATURES
575 MHz to 675 MHz operating range
Low Output Jitter: 9ps rms typical at 622 MHz
On Chip Crystal Oscillator Circuit
Optimized for 15 to 40 MHz crystals
Uses parallel fundamental mode crystal
Selectable 8x, 16x or 32x multiplier
Selectable
÷
1 or
÷
2 LVDS output
LVDS output meets TIA/EIA 644A Specification
(2001)
3.3V ±10% Low power CMOS: 80 mW typical
-40°C to +85°C operating temperature
Extremely small 16-lead QFN package
F
IGURE
1. B
LOCK
D
IAGRAM OF THE
XRT8020
O
GND
FS1
OE
AGND
PD
AGND
(Crystal)
FS0
AGND
15-40 MHz
Crystal
XTAL1
XTAL2
Oscillator
Circuit &
Input Buffer
VCO
Calibration Logic
Phase
Detector
Charge
Pump
Loop
Filter
VCO
Selectable
÷
1 or
÷
2
Divider
LVDS Output
Feedback Divider
÷
8, 16 or 32
Voltage Reference
&
Bias Generator
R
EXT
10k
AV
DD
AV
DD
OV
DD
+3.3V
12 - 20 pF
12 - 20 pF
XRT8020
OUTP
OUTN
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT8020ES | 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| XRT8020IL | 制造商:EXAR 制造商全稱:EXAR 功能描述:650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS |
| XRT8020IL-F | 功能描述:鎖相環(huán) - PLL RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
| XRT81L17IV-F | 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT81L27 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY |
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