sy87702l Micrel Semiconductor, sy87702l Datasheet
sy87702l
Related parts for sy87702l
sy87702l Summary of contents
Page 1
... Link Fault Detection circuit. This circuit, enabled by the output of an optical module driving the CD input low, causes the recovery PLL of the SY87702L to lock to the reference clock's multiplied frequency under Loss-of-Signal conditions. This low jitter clock is provided at the RCLK outputs and is at the same frequency as that provided at the TCLK output ...
Page 2
... Tape and Reel. TCLKC– 3. Pb-Free package is recommended for new designs. 2 (1) Package Range Marking Industrial SY87702LHI Industrial SY87702LHI Industrial SY87702LHG with Pb-Free bar line indicator Pb-Free Industrial SY87702LHG with Pb-Free bar line indicator Pb-Free = 25°C, DC Electricals only. A SY87702L Lead Finish Sn-Pb Sn-Pb NiPdAu ...
Page 3
... Mux/Demux TXCLK SY87702L CDR/CMU Ref Sel CD Lock SY877XXL SY877XXL Frame Programmable Detector Protocol Selector 3 SY87702L Code Group Data ( 10, Bits) Code Group Strobe Note: Add second SY877XXL for bit parallel input and output. Code Group Rate Clock Alignment Detect ...
Page 4
... Divide 10, 16, 20 not connect. M9999-072706 hbwhelp@micrel.com or (408) 955-1690 Charge VCO Pump N/W1/W2/W3 N/W Charge VCO Pump N/W1/W2/W3 N/W 4 SY87702L RDOUTE+ RDOUTE– RDOUTC+ RDOUTC– RCLKE+ RCLKE– RCLKC+ RCLKC– Link Fault Detector LFIN TCLKE+ TCLKE– TCLKC+ TCLKC– ...
Page 5
... These inputs select the VCO frequency range via either one of three wide-band PLLs SONET/SDH specific narrow-band PLL. Only the selected PLL is enabled. All other PLL’s are disabled. Please refer to Table 1. VCOSEL1 VCOSEL2 Table SY87702L Choice SONET/SDH 1.8 to 2.5GHz 1.25 to 1.8GHz 0.650 to 1.30GHz ...
Page 6
... GND GNDA NC 6 [Receive Data Out] – Differential PECL [Receive Data Out] – Differential CML Supply Voltage Output Supply Voltage Analog Supply Voltage Ground Analog Ground These pins are for factory test, and are to be left unconnected during normal use. SY87702L ...
Page 7
... Micrel, Inc. DESCRIPTION General The SY87702L is a complete clock and data recovery circuit, capable of dealing with NRZ data rates from 28Mbps through to 2.5Gbps. A reference PLL is used as a frequency synthesizer, both to multiply a clock to the desired transmit rate, and to train the recovery PLL in preparation for actual data recovery ...
Page 8
... CPWL CPWH ODC ODC 100Ω 100Ω 100Ω 100Ω 100Ω SY87702L Ω Figure 3. 50 Load CML Output V CC 100Ω 100Ω 200Ω SY87702L Ω Figure 4. 100 Load CML Output SY87702L ...
Page 9
... CC (1) = –40°C to +85°C A Min. Typ. Max. — V – 0.025 — CC — V – 0.400 — – 0.200 CC 9 SY87702L Rating Unit –0.5 to +7.0 V –0 100 30 mA –65 to +150 °C –40 to +85 °C Unit Condition V mA Unit ...
Page 10
... SY87702L Unit Condition 2.7V Max. µ µ Max 0.5V Max. µ µA OUT ...
Page 11
... VCCO: PIN 42 41 RCLKE+ RCLKE+ 40 RCLKE– RCLKE– 39 RCLKC+ RCLKC+ 38 RCLKC– RCLKC– 37 VCCO VCCO: PIN 37 36 TCLKE+ TCLKE+ 35 TCLKE– TCLKE– 34 TCLKC+ TCLKC+ 33 TCLKC– TCLKC– VEE JP3 L4 VCC C11 C12 SY87702L VCC R16, 5kΩ JP2 VEE ...
Page 12
... RDOUTE R32, R34, 330Ω 330Ω C26 J7 RDOUTE R33, R35, 330Ω 330Ω SY87702L RDIN INPUTS V CC R36, C27 J6 83Ω 1 C31 RDIN+:FORCE 2 R37, 125Ω C28 C32 J5 RDIN+: SENSE ...
Page 13
... REV. OUTPUT) C39 J21 NC: PIN R44, DNI V EE C40 J22 NC: PIN R45, DNI SY87702L C45 VEE: PIN 59 0.01µF C46 VCC: PIN 58 0.01µF C47 VEE: PIN 57 0.01µF C48 VEE: PIN 56 0.01µF C49 VEE: PIN 48 0.01µF C50 VCCO: PIN 42 0.01µF C51 VCCO: PIN 37 0.01µ ...
Page 14
... M9999-072706 hbwhelp@micrel.com or (408) 955-1690 CompSide Island Heat Dissipation Heavy Copper Plane Heavy Copper Plane + 1 (408) 474-1000 FAX WEB Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. 14 Rev. 02 Package EP- Exposed Pad Die http://www.micrel.com SY87702L ...