SY87701LHG TR Micrel Inc, SY87701LHG TR Datasheet - Page 14
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SY87701LHG TR
Manufacturer Part Number
SY87701LHG TR
Description
3.3V Any-Rate 32-1250 Mbps CDR (I Temp, Green/32 Pin EP-TQFP/T+R)
Manufacturer
Micrel Inc
Type
Clock and Data Recovery (CDR)r
Datasheet
1.SY87701LHG.pdf
(14 pages)
Specifications of SY87701LHG TR
Input
PECL, TTL
Output
PECL, TTL
Frequency - Max
1.25GHz
Voltage - Supply
3.15 V ~ 3.45 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-TQFP Exposed Pad, 32-eTQFP, 32-HTQFP, 32-VQFP
Frequency-max
1.25GHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SY87701LHGTR
SY87701LHGTR
SY87701LHGTR
M9999-111506
hbwhelp@micrel.com or (408) 955-1690
Micrel, Inc.
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
5. Maintain compact filter networks as close to filter pins as possible. Provide ground plane relief under filter path to
6. Maintain low jitter on the REFCLK input. Isolate the XTAL oscillator from power supply noise by adequately
7. Higher speed operation may require use of fundamental-tone (third-overtone typically have more jitter) crystal based
8. All unused outputs must be terminated. To conserve power, unused PECL outputs can be terminated with a 1kΩ
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 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
traces.
reduce stray capacitance. Be careful of crosstalk coupling into the filter network.
decoupling. Keep XTAL oscillator close to device, and minimize capacitive coupling from adjacent signals.
oscillator for optimum performance. Evaluate and compare candidates by measuring TXCLK jitter.
resistor to V
EE
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
.
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL
+ 1 (408) 944-0800
Micrel for any damages resulting from such use or sale.
FAX
© 2006 Micrel, Incorporated.
+ 1 (408) 474-1000
APPENDIX A
14
WEB
http://www.micrel.com
SY87701L