ULTRA-PRECISION CML DATA AND CLOCK SYNCHRONIZER W/ INTERNAL INPUT AND OUTPUT TERMINATION Micrel, Inc. Precision Edge® SY58052U ® Precision Edge SY58052U FEATURES Precision Edge® ■ Resynchronizes data to a reference clock ■ Guaranteed AC performance over temperature and voltage: • DC-to > 10.7Gbps data rate throughput • DC-to > 7GHz clock fMAX • < 190ps Any In-to-Out tpd • tr / tf < 60ps DESCRIPTION The SY58052U is an ultra-fast, precision, low jitter datato-clock resynchronizer with a guaranteed maximum data and clock throughput of 10.7Gbps or 7GHz, respectively. The SY58052U is an ideal solution for backplane retiming or retiming after the data passes through long trace lengths. Serial data comes into the data input, and the CML output is synchronous to the input reference clock’s rising edge. The SY58052U differential inputs include a unique, internal termination design that allows access to the termination network through a VT pin. This feature allows the device to easily interface to different logic standards, both AC- and DC-coupled, without external resistor-bias and termination networks. The result is a clean, stub-free, low-jitter interface solution. The differential CML output is optimized for 50Ω environments with internal 50Ω source termination and a 400mV output swing. The SY58052U operates from a 2.5V or 3.3V supply and is guaranteed over the full industrial temperature range (–40°C to +85°C). The SY58052U is part of a Micrel’s Precision Edge® product family. All support documentation can be found on Micrel’s web site at www.micrel.com. ■ Ultra low-jitter design: • < 1psRMS random jitter • < 10psPP deterministic jitter • < 10ps total jitter (clock) PP ■ Internal 50Ω input termination ■ Unique input termination and VT pin accepts DCand AC-coupled inputs (CML, PECL) ■ Internal 50Ω output source termination ■ 400mV CML output swing ■ Power supply 2.5V ±5% or 3.3V ±10% ■ –40°C to 85°C temperature range ■ Available in a 16-pin (3mm × 3mm) MLF® package APPLICATIONS ■ Data communication systems ■ Serial OC-192, OC-192+FEC data-to-clock realignment ■ Parallel 10Gbps for OC768 ■ All SONET OC-3 — OC-768 applications ■ All Fibre Channel applications ■ All GigE applications FUNCTIONAL BLOCK DIAGRAM TYPICAL APPLICATION DATA SY58052U 50Ω VTD 50Ω Data from Backplane (Uncertain timing) DATA /DATA /DATA Q Q CLK /Q /Q 50Ω CLK 50Ω /CLK DATA Q Clock from Backplane Retimed Data CLK VTCLK R /CLK DATA IN CLK /RESET Q OUT (Retimed) AnyGate and Precision Edge are registered trademarks of Micrel, Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc. M9999-082010 [email protected] or (408) 955-1690 Rev.: D 1 Amendment: /0 Issue Date: August 2010 Precision Edge® SY58052U Micrel, Inc. GND VCC 16 GND VTCLK PACKAGE/ORDERING INFORMATION 15 14 13 Ordering Information(1) Part Number Package Type Operating Range Package Marking Lead Finish SY58052UMI MLF-16 Industrial 052U Sn-Pb GND SY58052UMITR(2) MLF-16 Industrial 052U Sn-Pb DATA 3 10 GND SY58052UMG(3) MLF-16 Industrial /DATA 4 9 052U with Pb-Free bar-line indicator Pb-Free NiPdAu SY58052UMGTR(2, 3) MLF-16 Industrial 052U with Pb-Free bar-line indicator Pb-Free NiPdAu 5 6 7 8 VCC Q 11 GND 12 2 /RESET 1 VTDATA CLK /CLK /Q 16-Pin MLF® (MLF-16) Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC electricals only. 2. Tape and Reel. 3. Pb-Free package recommended for new designs. PIN DESCRIPTION Pin Number Pin Name Pin Function 1, 2 CLK, /CLK Differential Input: This input pair is the clock signal that re-times the data signal at DATA, /DATA. Each pin of this pair internally terminates to the VTCLK pin to 50Ω. Note that this input will default to an indeterminate state if left open. See “Input Interface Applications” section. 3, 4 DATA, /DATA Differential Input: This input pair is the signal to be synchronized by the CLK, /CLK signal. Each pin of this pair internally terminates to the VTD pin to 50Ω. Note that this input will default to an indeterminate state if left open. See “Input Interface Applications” section. 5 VTData Input Termination Center-Tap: Each of the two inputs, DATA, /DATA terminates to this pin. The VTData pin provides a center-tap to a termination network for maximum interface flexibility. See “Input Interface Applications” section. 6 /RESET TTL/CMOS-Compatible Input: The /RESET input asynchronously forces the Q output to a logic “0” state whenever it is active low. Possible state changes due to rising edges on CLK, /CLK are ignored until /RESET goes inactive high. 7, 10, 11, 14, 15 GND (Exposed Pad) 8, 13 VCC Positive Power Supply. Bypass with 0.1µF0.01µF low ESR capacitors. 12, 9 Q, /Q Differential Output: This CML output pair is the output of the flip-flop. The Data input is transferred to the Q output at the rising edge of CLK (falling edge of /CLK). See “Input Interface Applications” section. 16 VTCLK Ground. Exposed pad must be connected to the same potential as the GND pin. Input Termination Center-Tap: Each of the two inputs, CLK, /CLK terminates to this pin. The VTCLK pin provides a center-tap to a termination network for maximum interface flexibility. See “Input Interface Applications” section. TRUTH TABLES DATA /DATA CLK /CLK /RESET Q /Q X X X X 0 0 1 X X 0 1 1 QN–1 /QN–1 X X 1 0 1 QN–1 /QN–1 0 1 1 0 1 1 0 1 1 0 M9999-082010 [email protected] or (408) 955-1690 2 Precision Edge® SY58052U Micrel, Inc. Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VCC) .................................. –0.5V to +4.0V Input Voltage (VIN) ......................................... –0.5V to VCC CML Output Voltage (VOUT) ......... VCC –1.0V to VCC +5.0V Termination Current(3) Source or Sink Current on VTD, VCLK ....................... ±60mA Input Current Source or Sink Current on D, /D, CLK, /CLK ....... ±30mA Lead Temperature (soldering, 20 sec.) ................... +260°C Storage Temperature (TS) ....................... –65°C to +150°C Supply Voltage (VCC) .......................... +2.375V to +2.625V ............................................................ +3.0V to +3.6V Ambient Temperature (TA) ......................... –40°C to +85°C Package Thermal Resistance(4) MLF® (θJA) Still-Air ............................................................. 61°C/W MLF® (ψJB) Junction-to-Board ............................................ 38°C/W DC ELECTRICAL CHARACTERISTICS(5) TA = –40°C to +85°C, unless otherwise noted. Symbol Parameter Condition VCC Power Supply ICC Power Supply Current RIN Differential Input Resistance (D, /D or CLK, /CLK) VIH Input HIGH Voltage (D, /D or CLK, /CLK) Note 6 VIL Input LOW Voltage (D, /D or CLK, /CLK) VIN Min Typ Max Units 2.625 3.6 V V 60 92 mA 100 120 Ω 1.2 VCC V Note 6 0 VIH–0.1 V Input Voltage Swing (D, /D or CLK, /CLK) Note 6 100 mV VDIFF_IN Differential Input Voltage Swing |D, /D| or |CLK, /CLK| Note 6 See Figure 2a. 200 mV |IIN| Input Current (IN, /IN) Note 6 See Figure 2b. 2.375 3.0 No load, max. VCC. 80 21 mA Notes: 1. Permanent device damage may occur if the ratings in the “Absolute Maximum Ratings” section are exceeded. This is a stress rating only and functional operation is not implied for conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratings conditions for extended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Due to the limited drive capability use for input of the same package only. 4. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device’s most negative potential on the PCB. ψJB uses 4-layer θJA in still-air, unless otherwise stated. 5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 6. Due to the internal termination (see “ Input Structures” section) the input current depends on the applied voltages at D, /D and VTD inputs, the CLK, /CLK and VTCLK inputs or the S, /S and VTS inputs. Do not apply a combination of voltages that causes the input current to exceed the maximum limit! M9999-082010 [email protected] or (408) 955-1690 3 Precision Edge® SY58052U Micrel, Inc. LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS(7) VCC = 2.5V ±5% or 3.3V ±10%; TA = –40°C to +85°C; unless otherwise noted. Symbol Parameter VIH Input HIGH Voltage VIL Input LOW Voltage IIH Input HIGH Current IIL Input LOW Current Condition Min Typ Max 2.0 Units V –125 0.8 mV 20 µA –300 µA CML OUTPUTS DC ELECTRICAL CHARACTERISTICS(7) VCC = 2.5V ±5% or 3.3V ±10%; RL = 100Ω across output pair or equivalent; TA = –40°C to +85°C; unless otherwise noted. Symbol Parameter Condition Min VOH Output HIGH Voltage Q, /Q VOUT Output Voltage Swing Q, /Q See Figure 2a. 325 VDIFF_OUT Differential Output Voltage Swing Q, /Q See Figure 2b. ROUT Output Source Impedance Q, /Q Typ Max Units VCC V 400 550 mV 650 800 1000 mV 40 50 60 Ω VCC–0.020 AC ELECTRICAL CHARACTERISTICS(8) VCC = 2.5V ±5% or 3.3V ±10%; RL = 100Ω across output pair or equivalent; TA = –40°C to +85°C; unless otherwise noted. Symbol Parameter fMAX Maximum Operating Frequency tpd Propagation Delay tRESET Propagation Delay (RESET-to-Q) tS Set-Up Time 20 ps tH Hold Time 20 ps tRR Reset Recovery Time 500 ps tJITTER Random Jitter (RJ) Note 9 Deterministic Jitter (DJ) Note 10 tr, tf Condition Min Typ Max 10.7 (CLK-to-Q) GHz 70 VTH = VCC/2 10–12 Total Jitter (TJ) 10GHz Clock, 1× BER, Note 11 10GHz Data, 1× 10–12 BER, Note 11 Rise/Fall Times (20% to 80%) At full output swing. 20 Units 30 190 ps 600 ps 1 psRMS 10 psPP 10 14 psPP psPP 60 ps Notes: 7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 8. Measured with 100mV input swing. See “Timing Diagrams” section for definition of parameters. High-frequency AC-parameters are guaranteed by design and characterization. 9. RJ is measured with a K28.7 comma detect character pattern, measured at 10.7Gbps and 2.5Gbps. 10. DJ is measured at 10.7Gbps and 2.5Gbps, with both K28.5 and 223–1 PRBS pattern 11. Total jitter definition: with an ideal clock input frequency of ≤ fMAX, no more than one output edge in 1012 output edges will deviate by more than the specified peak-to-peak jitter value. M9999-082010 [email protected] or (408) 955-1690 4 Precision Edge® SY58052U Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS VCC = 3.3V, GND = 0V, CLK = 400mV, D = 400mV, TA = 25°C. 622Mbps Output 1.25Gbps Output Output Swing (50mV/div.) PRBS 223—1 Output Swing (50mV/div.) PRBS 223—1 TIME (500ps/div.) TIME (200ps/div.) 2.5Gbps Output 5Gbps Output Output Swing (50mV/div.) PRBS 223—1 Output Swing (50mV/div.) PRBS 223—1 TIME (100ps/div.) TIME (50ps/div.) 7Gbps Output 10.7Gbps Output Output Swing (50mV/div.) PRBS 223—1 Output Swing (50mV/div.) PRBS 223—1 TIME (20ps/div.) Output Amplitude vs. Data Rate IN to Q Propagation Delay vs. Temperature OUTPUT AMPLITUDE (mV) PROPAGATION DELAY (ps) 140 TIME (20ps/div.) 135 130 CML (200mV Swing) 125 120 115 110 LVDS (400mV Swing) PECL (800mV Swing) 105 100 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) (Forced Air) M9999-082010 [email protected] or (408) 955-1690 5 420 400 380 360 340 320 300 280 260 240 220 200 0 2 4 6 8 10 DATA RATE (Gbps) 12 Precision Edge® SY58052U Micrel, Inc. TIMING DIAGRAM CLK tH 50% 50% DATA tS tRR /RESET 50% 50% Q tpd tpd INPUT AND OUTPUT STAGE INTERNAL TERMINATION VCC VCC VCC 50Ω 50Ω /Q Q R CLK, DATA /RESET 50Ω VTCLK, VTD R 50Ω /CLK, /DATA Figure 1c. Simplified Differential Output Stage Figure 1b. Simplified TTL/CMOS Input Figure 1a. Simplified Differential Input Stage OPERATING CHARACTERISTICS VDIFF_IN, VDIFF_OUT 800mV (typical) VIN, VOUT 400mV (typical) Figure 2a. Single-Ended Swing Figure 2b. Differential Swing Definition of Single-Ended and Differential Swings M9999-082010 [email protected] or (408) 955-1690 6 Precision Edge® SY58052U Micrel, Inc. INPUT INTERFACE APPLICATIONS VCC VCC VCC D D, CLK 1kΩ D, CLK LVDS /D CML /D, /CLK SY58052U /D, /CLK SY58052U GND SY58052U GND NC GND VT NC NC VT VT Input HIGH level shown. Figure 3b. LVDS Interface (DC-Coupled) Figure 3a. Static Input Level Figure 3c. CML Interface (DC-Coupled) Option: VT may be connected to VCC. VCC VCC VCC 0.1µF 0.1µF D, CLK CML /D, /CLK VCC /D, /CLK /D, /CLK VCC GND R1 LVPECL LVPECL SY58052U GND 0.1µF D, CLK D, CLK SY58052U 0.1µF VT R1 = 1kΩ, R2 = 1.4kΩ. Figure 3d. CML Interface (AC-Coupled) RPD VCC SY58052U GND 0.1µF VT Rb R2 RPD R1 VT R2 GND Rb = 50Ω. GND Figure 3e. LVPECL Interface (DC-Coupled) For 3.3V, RPD = 100Ω. R1 = 1kΩ, R2 = 1.4kΩ. For 2.5V, RPD = 50Ω. R1 = 1kΩ, R2 = 1.4kΩ. Figure 3f. LVPECL Interface (AC-Coupled) RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function Data Sheet Link SY58016L 3.3V 10Gbps Differential CML Line Driver/ Receiver with Internal Termination www.micrel.com/product-info/products/sy58016l.shtml SY58051U 10.7Gbps AnyGate® with Internal Input and Output Termination www.micrel.com/product-info/products/sy58051u.shtml MLF® Application Note www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf New Products and Applications www.micrel.com/product-info/products/solutions.shtml HBW Solutions M9999-082010 [email protected] or (408) 955-1690 7 Precision Edge® SY58052U Micrel, Inc. 16-PIN MicroLeadFrame® (MLF-16) Package EP- Exposed Pad Die CompSide Island Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane PCB Thermal Consideration for 16-Pin MLF® Package (Always solder, or equivalent, the exposed pad to the PCB) Package Notes: 1. Package meets Level 2 qualification. 2. All parts dry-packaged before shipment. 3. Exposed pads must be soldered to a ground for proper thermal management. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB USA 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. M9999-082010 [email protected] or (408) 955-1690 8