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參數(shù)資料
| 型號： | SY87721LHY TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLOCK/DATA RECOVERY 64-TQFP |
| 標準包裝： | 1,000 |
| 系列： | AnyRate® |
| 類型： | 時鐘和數(shù)據(jù)恢復(fù)（CDR），多路復(fù)用器 |
| PLL： | 是 |
| 主要目的： | 以太網(wǎng)，SONET/SDH，ATM 應(yīng)用 |
| 輸入： | PECL |
| 輸出： | CML，PECL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:6 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 2.7GHz |
| 電源電壓： | 3.15 V ~ 3.45 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-TQFP 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 64-TQFP-EP（10x10） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | SY87721LHYTR SY87721LHYTR-ND |
SY87721L
16
Micrel, Inc.
M9999-012508
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.
Evaluate ASIC AND FPGA REFIN source clocks with suitable jitter analysis equipment, such as TDS11801 tektronix
DSO oscilloscope, or Wavecrest DTS2077 Time Interval Analyzer.
9.
All unused outputs require termination. NC, however, should be unconnected.
MICREL, INC.
2180 FORTUNE DRIVE
SAN JOSE, CA 95131
USA
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.
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.
2005 Micrel, Incorporated.
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