參數(shù)資料
型號(hào): SY87700LHG
廠商: MICREL INC
元件分類: 數(shù)字傳輸電路
英文描述: 3.3V 32-175Mbps AnyRate CLOCK AND DATA RECOVERY
中文描述: CLOCK RECOVERY CIRCUIT, PQFP32
封裝: LEAD FREE, TQFP-32
文件頁(yè)數(shù): 14/14頁(yè)
文件大?。?/td> 580K
代理商: SY87700LHG
SY87700L
14
Micrel, Inc.
M9999-111406
hbwhelp@micrel.com or (408) 955-1690
APPENDIX A
Layout and General Suggestions
1.
Establish controlled impedance stripline, microstrip, or co-planar construction techniques.
2.
Signal paths should have, approximately, the same width as the device pads.
3.
All differential paths are critical timing paths, where skew should be matched to within
±
10ps.
4.
Signal trace impedance should not vary more than
±
5%. If in doubt, perform TDR analysis of all high-speed signal
traces.
5.
Maintain compact filter networks as close to filter pins as possible. Provide ground plane relief under filter path to
reduce stray capacitance. Be careful of crosstalk coupling into the filter network.
6.
Maintain low jitter on the REFCLK input. Isolate the XTAL oscillator from power supply noise by adequately
decoupling. Keep XTAL oscillator close to device, and minimize capacitive coupling from adjacent signals.
7.
Higher speed operation may require use of fundamental-tone (third-overtone typically have more jitter) crystal based
oscillator for optimum performance. Evaluate and compare candidates by measuring TXCLK jitter.
8.
All unused outputs must be terminated. To conserve power, unused PECL outputs can be terminated with a 1k
resistor to V
EE
.
MICREL, INC.
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
WEB
http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
2180 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
2006 Micrel, Incorporated.
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SY87700LHGTR 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:3.3V 32-175Mbps AnyRate CLOCK AND DATA RECOVERY Use lower-power SY87700AL for new designs
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