SY56016R Low Voltage 1.2V/1.8V/2.5V CML Differential Line Driver/Receiver 6.4Gbps with Equalization General Description The SY56016R is a fully differential, low voltage 1.2V/1.8V/2.5V CML Line Driver/Receiver with input equalization. The SY56016R can process clock signals as fast as 5.0GHz or data patterns up to 6.4Gbps. The differential input includes Micrel’s unique, 3-pin input termination architecture that interfaces to CML differential signals, without any level-shifting or termination resistor networks in the signal path. The differential input can also accept AC-coupled CML, LVPECL, and LVDS signals. Input voltages as small as 200mV (400mVPP) are applied before the 9”, 18” or 27” FR4 transmission line. For ACcoupled input interface applications, an internal voltage reference is provided to bias the VT pin. The outputs are CML, with extremely fast rise/fall times guaranteed to be less than 80ps. The SY56016R operates from a 2.5V ±5% core supply and a 1.2V, 1.8V or 2.5V ±5% output supply and is guaranteed over the full industrial temperature range (–40°C to +85°C). The SY56016R is part of Micrel’s high-speed, ® Precision Edge product line. Datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Functional Block Diagram ® Precision Edge Features ∑ 1.2V/1.8V/2.5V CML Differential Line Driver/Receiver with Equalization ∑ Equalizes 9, 18, 27 inches of FR4 ∑ Guaranteed AC performance over temperature and voltage: – DC-to >6.4Gbps Data throughput – DC-to >5.0GHz Clock throughput – <250ps propagation delay (IN-to-Q) – <80ps rise/fall times ∑ Ultra-low jitter design – <1psRMS random jitter ∑ High-speed CML outputs ∑ 2.5V ±5% VCC, 1.2V/1.8V/2.5V ±5% VCCO power supply operation ∑ Industrial temperature range: –40°C to +85°C ® ∑ Available in 10-pin (2mm x 2mm) MLF package Applications ∑ ∑ ∑ ∑ Data Distribution: SONET clock and data distribution Fibre Channel clock and data distribution Gigabit Ethernet clock and data distribution Markets ∑ ∑ ∑ ∑ ∑ Storage Test and measurement Enterprise networking equipment High-end servers Metro area network equipment Precision Edge is a registered trademark of Micrel, Inc MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com December 2008 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R Ordering Information Part Number Package Type Operating Range Package Marking Lead Finish SY56016RMG MLF-10 Industrial R016 with Pb-Free bar-line indicator NiPdAu Pb-Free MLF-10 Industrial R016 with Pb-Free bar-line indicator NiPdAu Pb-Free SY56016RMGTR (2) Note: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only. 2. Tape and Reel. Pin Configuration Truth Table EQ Equalization LOW 9” FLOAT 18” HIGH 27” ® 10-Pin MLF (MLF-10) Pin Description Pin Number Pin Name Pin Function 2, 3 IN, /IN Differential Input: Signals as small as 200mV VPK (400mVPP) can be applied to the input of 9, 18 or 27 inches 6 mil FR4 stripline transmission line. They are then terminated at the differential input internally with 50Ω to the VT pin. 1 VT Input Termination Center-Tap: Each side of the differential input pair terminates to VT pin. This pin provides a center-tap to a termination network for maximum interface flexibility. An internal high impedance resistor divider biases VT to allow input AC coupling. For AC coupling, bypass VT with 0.1µF low ESR capacitor to VCC. See “Interface Applications” subsection and Figure 2a. Three level input for equalization control. High, float, low. 4 EQ 10 VCC Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors as close to the VCC pin as possible. Supplies input and core circuitry. 6, 9 VCCO Output Supply: Bypass with 0.1µF//0.01µF low ESR capacitors as close to the VCCO pins as possible. Supplies the output buffer. GND, Ground: Exposed pad must be connected to a ground plane that is the same potential as the ground pin. 5 Exposed pad 8, 7 December 2008 Q0, /Q0 CML Differential Output Pair: Differential buffered copy of the input signal. The output swing is typically 390mV. See “Interface Applications” sub-section for termination information. 2 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VCC) ................................. –0.5V to +3.0V Supply Voltage (VCCO) ............................... –0.5V to +3.0V VCC - VCCO ........................................................... <1.8V VCCO - VCC ........................................................... <0.5V Input Voltage (VIN) ......................................... –0.5V to VCC CML Output Voltage (VOUT)................. 0.6V to VCCO+0.5V Current (VT) Source or sink current on VT pin .................. ±100mA Input Current Source or sink current on (IN, /IN) .................. ±50mA Maximum operating Junction Temperature.............125°C Lead Temperature (soldering, 20sec.) ....................260°C Storage Temperature (Ts) ........................... –65°C to +150°C Supply Voltage (VCC) .................................. 2.375V to 2.625V (VCCO) .................................... 1.14V to 2.625V Ambient Temperature (TA) ............................–40°C to +85°C (3) Package Thermal Resistance ® MLF Still-air (qJA) ....................................................... 93°C/W Junction-to-board (yJB)..................................... 56°C/W DC Electrical Characteristics(4) TA = –40°C to +85°C, unless otherwise stated Symbol Parameter Condition Min Typ Max Units VCC Power Supply Voltage Range VCC 2.375 2.5 2.625 V VCCO VCCO VCCO 1.14 1.7 2.375 1.2 1.8 2.5 1.26 1.9 2.625 V V V ICC Power Supply Current Max. VCC 30 42 mA ICCO Power Supply Current No Load. VCCO >1.7V 16 21 mA RIN Input Resistance (IN-to-VT, /IN-to-VT) 45 50 55 Ω RDIFF_IN Differential Input Resistance (IN-to-/IN) 90 100 110 Ω VIH Input HIGH Voltage (IN, /IN) 1.42 VCC V VIL Input LOW Voltage (IN, /IN) 1.22 VIH–0.2 V VIN Input Voltage Swing (IN, /IN) See Figure 3a, applied to input of transmission line. 0.2 1.0 V VDIFF_IN Differential Input Voltage Swing (|IN - /IN|) See Figure 3b, applied to input of transmission line. 0.4 2.0 V VT_IN Voltage from Input to VT 1.28 V (5) 1.22V = 1.7V-0.475V Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the PCB. yJB and qJA values are determined for a 4-layer board in still-air number, unless otherwise stated. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 5. 1.7V represents the VCC (min) value and 0.475V represents the maximum swing on a CML output. The difference between 1.7V and 0.475V is the VIL (min) needed for normal operation. December 2008 3 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R CML Outputs DC Electrical Characteristics(6) VCCO = 1.14V to 1.26V RL = 50Ω to VCCO, VCCO = 1.7V to 1.9V, 2.375V to 2.625V, RL = 50Ω to VCCO or 100Ω across the outputs, VCC = 2.375V to 2.625V. TA = –40°C to +85°C, unless otherwise stated. Symbol Parameter Condition Min Typ Max Units VOH Output HIGH Voltage RL = 50Ω to VCCO VCCO -0.020 VCCO -0.010 VCCO V VOUT Output Voltage Swing See Figure 3a 300 390 475 mV VDIFF_OUT Differential Output Voltage Swing ROUT Output Source Impedance See Figure 3b 600 780 950 mV 45 50 55 Ω Min Typ Max Units VCC V Three Level EQ Input DC Electrical Characteristics(6) VCC = 2.375V to 2.625V. TA = –40°C to +85°C, unless otherwise stated. Symbol Parameter VIH Input HIGH Voltage Condition VCC-0.3 VIL Input LOW Voltage 0 IIH Input HIGH Current VIH = VCC IIL Input LOW Current VIL = GND VEE+ V 0.3 400 -480 µA µA Notes: 6. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. December 2008 4 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R AC Electrical Characteristics VCCO = 1.14V to 1.26V RL = 50Ω to VCCO, VCCO = 1.7V to 1.9V, 2.375V to 2.625V, RL = 50Ω to VCCO or 100Ω across the outputs, VCC = 2.375V to 2.625V. TA = –40°C to +85°C, unless otherwise stated. Symbol Parameter Condition Min fMAX Maximum Frequency NRZ Data 6.4 Gbps 5.0 GHz VOUT > 200mV tPD Propagation Delay tSKEW Part-to-Part Skew tJITTER Data tr, tf Output Rise/Fall Times (20% to 80%) IN-to-Q Random Jitter Clock Note 7, Figure 1 100 Typ Units 250 ps Note 8 100 ps Note 9 1 psRMS 80 ps At full output swing. 20 150 Max 50 Notes: 7. Propagation delay is measured with no attenuating transmission line connected to the input. 8. Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and input transition. 9. Random jitter is measured with a K28.7 pattern, measured at ≤ fMAX. Timing Diagram Figure 1. Propagation Delay December 2008 5 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R Typical Characteristics 23 VCC = 2.5V, VCCO = 1.2V, GND = 0V, VIN = 400mV, RL = 50Ω to 1.2V, Data Pattern: 2 -1, TA = 25°C, unless otherwise stated. December 2008 6 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R Input and Output Stage Figure 2b. Simplified CML Output Buffer Figure 2a. Simplified Differential Input Buffer Single-Ended and Differential Swings Figure 3a. Single-Ended Swing December 2008 Figure 3b. Differential Swing 7 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R Interface Applications CML Output Termination with 1.8V/2.5V VCCO For VCCO of 1.8V or 2.5V, Figures 5a and 5b, terminate with either 50Ω-to-VCCO or 100Ω differentially across the outputs. AC- or DC-coupling is fine. See Figure 5c for AC-coupling. For Input Interface Applications see Figures 4a through 4e. For CML Output Termination, see Figures 5a through 5d. CML Output Termination with 1.2V VCCO For VCCO of 1.2V, Figure 5a, terminate the output with 50Ω-to-1.2V, DC coupled, not 100Ω differentially across the outputs. If AC-coupling is used, Figure 5d, terminate into 50Ωto-1.2V before the coupling capacitor and then connect to a high value resistor to a reference voltage. Do not AC couple with internally terminated receiver. For example, 50Ω ANY-IN input. AC-coupling will offset the output voltage by 200mV and this offset voltage will be too low for proper driver operation. Any unused output pair needs to be terminated when VCCO is 1.2V, do not leave floating. December 2008 Input AC-Coupling The SY56016R input can accept AC-coupling from any driver with voltage swing between 0.2V to 1.0V (See DC Electrical Characteristics for more details). Bypass VT with a 0.1µF low ESR capacitor to VCC, as shown in Figures 4c and 4d. VT has an internal high impedance resistor divider as shown in Figure 2a, to provide a bias voltage for AC-coupling. Input Termination From 1.8V CML driver: Terminate with VT tied to 1.8V. Do not terminate 100Ω differentially. From 2.5V CML driver: Terminate with either VT tied to 2.5V or 100Ω differentially. The input cannot be DC-coupled from a 1.2V CML driver. 8 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R Input Interface Applications Figure 4a. CML Interface 100Ω Differential (DC-Coupled, 2.5V) Figure 4b. CML Interface 50Ω to VCC (DC-Coupled, 1.8V, 2.5V) Figure 4c. CML Interface (AC-Coupled) Option: May connect VT to VCC Figure 4d. LVPECL Interface (AC-Coupled) December 2008 Figure 4e. LVDS Interface (AC-Coupled) 9 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R CML Output Termination Figure 5a. 1.2V 1.8V or 2.5V CML DC-Coupled Termination Figure 5b. 1.8V or 2.5V CML DC-Coupled Termination Figure 5c. CML AC-Coupled Termination (VCCO 1.8V or 2.5V only) Figure 5d. CML AC-Coupled Termination VCCO 1.2V Only Related Product and Support Documents Part Number Function Datasheet Link HBW Solutions New Products and Termination Application Notes http://www.micrel.com/page.do?page=/productinfo/as/HBWsolutions.shtml December 2008 10 M9999-121708-A [email protected] or (408) 955-1690 Micrel, Inc. SY56016R Package Information ® 10-Pin MicroLeadFrame (MLF-10) 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 a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2008 Micrel, Incorporated. December 2008 11 M9999-121708-A [email protected] or (408) 955-1690