Precision Edge® SY89325V ® Precision Edge 3.3V/5V 1.5Gbps DIFFERENTIAL CML/PECL/LVPECL-to-LVDS TRANSLATOR Micrel, Inc. SY89325V FEATURES ■ Guaranteed AC performance over temp and voltage: • DC-to >1.5Gbps data rate throughput • >750MHz clock fMAX • <50ps within-device skew ■ Ultra-low jitter design: • <1psRMS random jitter • <10psPP deterministic jitter • <1psRMS cycle-to-cycle jitter • <10psPP total jitter (clock) Precision Edge® DESCRIPTION The SY89325V is a fully differential, CML/PECL/LVPECLto-LVDS translator. It achieves LVDS signaling up to 1.5Gbps and clock rates of 750MHz, depending of the distance and the characteristics of the media and noise coupling sources. LVDS is intended to drive 50Ω impedance transmission line media such as PCB traces, backplanes, or cables. SY89325V inputs can be terminated with a single resistor between the true and complement pins of the input. The SY89325V is a member of Micrel’s Precision Edge® family of high-speed logic devices. This family features ultra-small packaging, high signal integrity, and operation at many different supply voltages. For applications that require dual translators, consider the SY55855V. All support documentation can be found on Micrel’s web site at www.micrel.com. ■ Accepts CML, PECL, LVPECL inputs ■ ■ ■ ■ 350mV LVDS output swing Power supply 3.3V ±10% or 5.0V ±10% –40°C to +85°C temperature range Available in ultra-small (2mm × 2mm) 8-pin MLF® package APPLICATIONS ■ ■ ■ ■ High-speed logic Data communications systems Wireless communications systems Telecom systems FUNCTIONAL BLOCK DIAGRAM NC 1 8 VCC CML/PECL/LVPECL IN Input /IN 2 7 Q 3 6 /Q NC 4 5 VEE 8-Pin MLF® TYPICAL APPLICATIONS CIRCUIT Backplane LVDS Output SY89325V 100mV Input Swing 400mV Output Swing (2mm × 2mm) 100mV 400mV Input Waveform Output Waveform Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc. M9999-051006 [email protected] or (408) 955-1690 Rev.: C 1 Amendment: /0 Issue Date: May 2006 Precision Edge® SY89325V Micrel, Inc. PACKAGE/ORDERING INFORMATION NC 1 8 VCC Ordering Information Package Type Operating Range Package Marking Lead Finish SY89325VMITR MLF-8 Industrial 325 Sn-Pb SY89325VMGTR(1) MLF-8 Industrial 325 with Pb-Free bar-line indicator Pb-Free NiPdAu IN 2 7 Q Part Number /IN 3 6 /Q NC 4 5 GND Note: 8-Pin MLF® (MLF-8) 1. Pb-Free package is recommended for new designs. PIN DESCRIPTION Pin Number Pin Name 2, 3 IN, /IN 8 VCC Positive power supply. Bypass with 0.1µF0.01µF low ESR capacitors. 7, 6 Q, /Q Differential LVDS Output: This output is the output of the device. Terminate with 100Ω across the pair. See “Output Interface Applications” section. 5 GND, Exposed 1, 4 NC M9999-051006 [email protected] or (408) 955-1690 Pin Function Differential Inputs: These input pairs are the differential signal inputs to the device. These inputs accept AC- or DC-coupled signals as small as 100mV. External termination is required. Ground. Ground pin and exposed pad must be connected to the same ground plane. No connect. 2 Precision Edge® SY89325V Micrel, Inc. Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VCC) ................................ –0.5V to + 6.0V Input Voltage (VIN) .............................. –0.5V to VCC +0.5V Input Current Source or sink current on IN, /IN .......................... ±50mA CML Output Voltage (VOUT) ........... VCC–1.0V to VCC+0.5V Lead Temperature (soldering, 20 sec.) ................... +260°C Storage Temperature (TS) ...................... –65°C to +150°C Supply Voltage (VCC) .................................. +3.0V to +3.6V ............................................................ +4.5V to +5.0V Ambient Temperature (TA) ........................ –40°C to +85°C Package Thermal Resistance(3) MLF® (θJA) Still-Air ................................................................. 93°C/W MLF® (ΨJB) Junction-to-board ............................................... 60°C/W DC ELECTRICAL CHARACTERISTICS(4) TA = –40°C to +85°C; unless stated. Symbol Parameter VCC Power Supply ICC Power Supply Current Condition Min Typ Max Units 3.0 3.3 3.6 V 4.5 5.0 5.7 V VCC ≤ 3.6V 50 mA 3.6V ≤ VCC ≤ 5.7V 80 mA Max Units INPUT DC ELECTRICAL CHARACTERISTICS(4) VCC = 3.3V ±10% or 5.0V ±10%; TA = –40°C to +85°C. Symbol Parameter Condition Min Typ VIH Input HIGH Voltage (IN, /IN) 1.6 VCC V VIL Input LOW Voltage (IN, /IN) 1.5 VCC –0.1 V VIN Input Voltage Swing (IN, /IN) See Figure 1a. 100 mV VDIFF_IN Differential Input Voltage Swing |IN - /IN| See Figure 1b. 200 mV LVDS OUTPUT DC ELECTRICAL CHARACTERISTICS(4) VCC = 3.3V ±10% or 5.0V ±10%; TA = –40°C to +85°C; RL = 100Ω across output pair, or equivalent, unless otherwise stated. Symbol Parameter Condition Min VOH Output HIGH Voltage IOH = –4.0mA VOL Output LOW Voltage IOL = 4.0mA VOCM Output Common Mode Voltage ∆VOCM Typ Max Units 1.474 V 0.925 V 1.125 1.375 V Change in Common Mode Voltage –50 +50 mV VOUT Output Voltage Swing 250 350 mV VDIFF-OUT Differential Output Voltage Swing 500 700 mV Notes: 1. Permanent device damage may occur if 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. 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. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. M9999-051006 [email protected] or (408) 955-1690 3 Precision Edge® SY89325V Micrel, Inc. AC ELECTRICAL CHARACTERISTICS(5) VCC = 3.3V ±10% or 5.0V ±10%; TA = –40°C to +85°C; output loaded with 100Ω across the output pair, or equivalent unless otherwise stated. Symbol Parameter Condition Min fMAX Maximum Operating Frequency VOUT ≥ 200mV NRZ Data Propagation Delay tJITTER tr, tf IN-to-Q VIN ≥ 100mV Max Units 1.5 Clock tpd Typ Gbps 750 300 MHz 700 ps Random Jitter (RJ) Note 6 1 psRMS Deterministic Jitter (DJ) Note 7 10 psPP Cycle-to-Cycle Jitter Note 8 1 psRMS Total Jitter (TJ) Note 9 10 psPP 300 ps Rise / Fall Time (20% to 80%) Q, /Q At full output swing. 100 Notes: 5. Measured with 100mV input swing. See “Timing Diagrams” section for definition of parameters. High-frequency AC-parameters are guaranteed by design and characterization. 6. Random jitter is measured with a K28.7 comma detect character pattern, measured at 1.5Gbps. 7. Deterministic jitter is measured at fMAX, with both K28.5 and 223 –1 PRBS pattern 8. Cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, Tn–Tn–1 where T is the time between rising edges of the output signal. 9. Total jitter definition: with an ideal clock input of frequency ≤ fMAX, no more than one output edge in 1012 output edges will deviate by more than the specified peak-to-peak jitter value. SINGLE-ENDED AND DIFFERENTIAL SWINGS VDIFF_IN, VDIFF_OUT 700mV (Typ.) VIN, VOUT 350mV (Typ.) Figure 1b. Differential Voltage Swing Figure 1a. Single-Ended Voltage Swing TIMING DIAGRAM IN /IN tpd Q /Q Figure 2. Timing Diagram M9999-051006 [email protected] or (408) 955-1690 4 Precision Edge® SY89325V Micrel, Inc. INPUT INTERFACE APPLICATIONS VCC VCC VCC (DRIVER) VCC (DRIVER) IN CML 100Ω /IN 82Ω VCC 82Ω SY89325V IN CML /IN SY89325V Note: VCC of SY89325V must be ≥ VCC (DRIVER) 130Ω 130Ω Figure 3. CML-DC Coupled VCC VCC (DRIVER) Figure 5. CML-AC Coupled IN PECL VCC /IN SY89325V 50Ω IN 50Ω LVDS 100Ω /IN SY89325V VCC–2V Figure 6. LVDS Note: VCC of SY89325V must be ≥ VCC (DRIVER) Figure 4. PECL-DC Coupled M9999-051006 [email protected] or (408) 955-1690 5 Precision Edge® SY89325V Micrel, Inc. OUTPUT INTERFACE APPLICATIONS ground between an LVDS driver and receiver. Also, change in common mode voltage, as a function of data input, is kept to a minimum, to keep EMI low. LVDS specifies a small swing of 350mV typical, on a nominal 1.25V common mode above ground. The common mode voltage has tight limits to permit large variations in 50Ω VOUT VOH, VOL 100Ω 50Ω VOH, VOL GND VOCM, ∆VOCM GND Figure 8a. LVDS Differential Measurement Figure 8b. LVDS Common Mode Measurement RELATED PRODUCT AND SUPPORT DOCUMENTATION Part Number Function Data Sheet Link SY55855V Dual CML/PECL/LVPECL-to-LVDS Translator www.micrel.com/product-info/products/sy55855v.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 M9999-051006 [email protected] or (408) 955-1690 6 Precision Edge® SY89325V Micrel, Inc. 8 LEAD MicroLeadFrame® (MLF-8) Package EP- Exposed Pad Die CompSide Island Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane PCB Thermal Consideration for 8-Pin MLF® Package Package Notes: 1. Package meets Level 2 qualification. 2. All parts are 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 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. © 2006 Micrel, Incorporated. M9999-051006 [email protected] or (408) 955-1690 7