Edge118 Low Skew Clock Spreader EDGE HIGH-PERFORMANCE PRODUCTS Description Features The Edge118 is a fully differential 1:18 clock spreader. Manufactured in a high performance bipolar process, the Edge118 is designed to accurately fan out a multitude of clock signals with low channel to channel skew. • Low Timing Error vs. Duty Cycle & Frequency • Low Channel to Channel Skew • Small Footprint (64 MQFP Package, 14 mm X 14 mm Body) Functional Block Diagram Applications • Test Equipment OUT / OUT* 0 OUT / OUT* 1 OUT / OUT* 2 OUT / OUT* 3 OUT / OUT* 4 OUT / OUT* 5 OUT / OUT* 6 OUT / OUT* 7 OUT / OUT* 8 IN / IN* OUT / OUT* 9 OUT / OUT* 10 OUT / OUT* 11 OUT / OUT* 12 OUT / OUT* 13 OUT / OUT* 14 OUT / OUT* 15 OUT / OUT* 16 OUT / OUT* 17 Revision 1/August 15, 2000 1 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS PIN Description Pin Name Pin # IN, IN* 6, 8 OUT0, OUT0* OUT1, OUT1* OUT2, OUT2* OUT3, OUT3* OUT4, OUT4* OUT5, OUT5* OUT6, OUT6* OUT7, OUT7* OUT8, OUT8* OUT9, OUT9* OUT10, OUT10* OUT11, OUT11* OUT12, OUT12* OUT13, OUT13* OUT14, OUT14* OUT15, OUT15* OUT16, OUT16* OUT17, OUT17* 1, 3 63, 61 58, 60 57, 55 52, 54 51, 49 45, 47 44, 42 39, 41 38, 36 33, 35 31, 29 26, 28 25, 23 20, 22 19, 17 13, 15 12, 10 Description Differential input signal. Differential ECL output signals. Power Supplies GND 2, 7, 11, 14, 18, 21, 24, 27, 30, 34, 37, 40, 43, 46, 50, 53, 56, 59, 62 Positive Power Supply VEE 9, 16, 32, 48, 64 Negative Power Supply TDP, TDN 4, 5 2000 Semtech Corp. Thermal Diode Connections 2 www.semtech.com Edge118 64 OUT0 GND GND OUT5* OUT1* OUT2* GND OUT2 OUT3 GND OUT3* OUT4* GND OUT4 OUT5 VEE OUT1 GND EDGE HIGH-PERFORMANCE PRODUCTS PIN Description (continued) 49 1 VEE OUT6* OUT0* TDP GND OUT6 TDN IN GND OUT7 GND OUT7* IN* VEE OUT17* OUT8* GND OUT8 GND OUT9 OUT17 OUT16 GND OUT9* GND OUT10* OUT16* VEE 33 GND OUT10 2000 Semtech Corp. 3 OUT11 VEE OUT14 GND OUT14* OUT13* GND OUT13 OUT12 GND OUT12* OUT11* GND OUT15* GND OUT15 17 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS Circuit Description Chip Overview OUT 0 OUT 0* The Edge118 is a clock distribution chip designed to take one input signal (IN / IN*) and fan it out 18 times to identical outputs (OUT / OUT*). The chip is designed to minimize channel to channel skew and any timing jitter. OUT 1 OUT 1* OUT 2 OUT 2* The part’s wide fanout is extremely useful in applications where many distinct copies of a signal are required on one PC Board, and these signals must all be aligned. This signal can be distributed without creating a distribution tree using multiple devices. OUT 3 OUT 3* OUT 4 OUT 4* Inputs OUT 5 OUT 5* The input signal is differential, requiring 250 mV swings for full performance operation. The inputs are ECL compatible, but may also be operated over a common mode voltage range between VEE + 1.3V and VCC – .5V. OUT 6 OUT 6* OUT 7 OUT 7* Outputs The outputs are ECL compatible differential signals with 800 mV voltage swings centered around 1.3V below GND. IN IN* OUT 8 OUT 8* OUT 9 OUT 9* OUT 10 OUT 10* Operating Frequency The Edge118 is designed to maintain full performance up to at least 1000 MHz and pass 500 ps pulses. OUT 11 OUT 11* OUT 12 OUT 12* OUT 13 OUT 13* OUT 14 OUT 14* OUT 15 OUT 15* OUT 16 OUT 16* OUT 17 OUT 17* 2000 Semtech Corp. 4 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS Application Information Power Supplies Decoupling A .1 µF or .01 µF capacitor (with excellent high frequency characteristics, is recommended between GND and VEE. In addition, solid GND and VEE planes are recommended to provide a low inductance path for the power supply currents. Output Terminations For optimal results, all output pairs (used or unused) should be terminated, and terminated in the same manner. Thermal Information Parameter Symbol Value Units θJA ~25 ˚C/W Thermal Resistance (300 LFM, par t soldered to a PC Board) Junction to Air 2000 Semtech Corp. 5 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS Package Information Top View 4 PIN Descriptions 4X 0.25 C A – B D D D2 3 –A– e SEE DETAIL "A" Bottom View 2 4X 5 5 7 0.20 C A – B D 7 D1 COO ZD 2000 Semtech Corp. 6 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS Package Information (continued) 0.40 MIN. ˚ 0 MIN. e/2 A2 –A, B, D– – 0.10 S 0.13 / 0.30 R. 0.13 R. MIN. 3 C GAGE PLANE 0.25 DETAIL "A" C A1 ˚ 0–7 L 1.60 REF. DETAIL "B" 8 SEE DETAIL "B" ˚ 12 – 16 ccc M C A–B S D S WITH LEAD FINISH b 1.41 REF. A H 2 12 0.13 / 0.23 0.13 / 0.17 0.076 C b 1 ˚ 12 – 16 BASE METAL SECTION C-C Notes: 1. All dimensions and tolerances conform to ANSI Y14.5-1982. 2. Datum plane -H- located at mold parting line and coincident with lead, where lead exits plastic body at bottom of parting line. 3. Datums A-B and -D- to be determined at centerline between leads where leads exit plastic body at datum plane -H-. 4. To be determined at seating plane -C-. 5. Dimensions D1 and E1 do not include mold protrusion. Allowable mold protrusion is 0.254 mm per side. Dimensions D1 and E1 do include mold mismatch and are determined at datum plane -H.-. 6. N” is the total # of terminals. 7. Package top dimensions are smaller than bottom dimensions by 0.20 mm, and top of package will not overhang bottom of package. 8. Dimension b does not include dambar protrusion. Allowable dambar protrusion shall be 0.08mm total in excess of the b dimension at maximum material condition. Dambar cannot be located on the lower radius or the foot. 9. All dimensions are in millimeters. 10. Maximum allowable die thickness to be assembled in this package family is 0.635 millimeters. 11. This drawing conforms to JEDEC registered outlines MO-108 and MS-022. 12. These dimensions apply to the flat section of the lead between 0.10 mm and 0.25 mm from the lead tip. JEDEC Variation All Dimensions in Millimeters AC Min. A 7 Max. 2.82 3.00 A1 0.10 0.15 0.25 A2 2.55 2.67 2.75 Note D 17.20 BSC. 4 D1 14.00 BSC. 5 D2 12.00 BSC. Z0 1.00 REF. E 17.20 BSC. 4 E1 14.00 BSC. 5 E2 12.00 BSC. ZE 1.00 REF. L 0.73 .088 N 64 e 0.80 BSC. b 0.30 b1 0.30 ccc 2000 Semtech Corp. Nom. 1.03 6 0.45 0.35 0.40 0.16 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS Recommended Operating Conditions Parameter Symbol Min Typ Max Units Positive Analog Power Supply GND 0 0 0 V Negative Analog Power Supply VEE – 5.5 – 4.2 V +125 ˚C Junction Temperature TJ Absolute Maximum Ratings Parameter Total Analog Power Supply Digital Inputs Ambient Operating Temperature Symbol Min GND – VEE IN / IN* Storage Temperature Junction Temperature Max Units – 7.0 0 V VEE – .5 GND + .5 V +125 ˚C – 55 +150 ˚C – 65 +150 ˚C 260 ˚C TA TJ Soldering Temperature Typ Stresses above listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2000 Semtech Corp. 8 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS DC Characteristics Parameter Symbol Min IN – IN* IN* – IN Iin IN, IN* 200 200 – 250 VEE + 1.3 Iout DC OUT – OUT* OUT* – OUT OUT – OUT* 2 600 600 – 1.5 225 Typ Max Units 250 GND – .5 mV mV µA V 800 800 – 1.3 – 1.1 mV mV V 275 325 mA IN / IN* Input Input Input Input High Voltage Low Voltage Bias Current Common Mode Range OUT / OUT* Output Output Output Output Current High Voltage Low Voltage Common Mode Range Supply Current 2000 Semtech Corp. 9 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS AC Characteristics Parameter Propagation Delay IN / IN* to OUT / OUT* (Notes 1, 5) Channel-to-Channel Skew (Note 6) Maximum Operating Frequency (Notes 1, 2, 3, 4) Symbol Min Typ Max Units Tpd 450 550 <25 650 100 ps ps Fmax 1000 >1200 Minimum Pulse Width (Notes 1, 2, 3, 4) PW min 400 500 ps Output Rise and Fall Times (Notes 1, 4) 20% - 80%, 50Ω Load 10% - 90%, 50Ω Load Tr / Tf Tr / Tf 260 400 400 500 ps ps <.1 1 ps Jitter (Notes 1, 4) Peak-to-Peak Note 1: Note 2: Note 3: Note 4: Note 5: Note 6: MHz ∆Tpd vs. Duty Cycle, T = 100 ns (Notes 1, 4) 3.0% <= Duty Cycle <= 97% 0.5% <= Duty Cycle <= 99.5% ∆Tpd ∆Tpd <10 <25 ps ps ∆Tpd vs. Frequency (Notes 1, 4) 10 MHz <= Frequency <= 1.0 GHz ∆Tpd <30 ps Temperature Coefficient (Notes 1, 4) ∆Tpd 1 ps / ˚ C Measured in a terminated 50Ω transmission line environment. And still maintain 80% amplitude. And still maintain a propagation delay variation (measured at the differential crossing points) of TPD ± 30 ps. This parameter is guaranteed by characterization. It is not production tested against the specification limit. This parameter is guaranteed by design and characterization. It is production tested against tester limits of Tpd = 550 ps ± 200 ps. This parameter is guaranteed by design and characterization. It is production tested against a tester limit of 160 ps. 2000 Semtech Corp. 10 www.semtech.com Edge118 EDGE HIGH-PERFORMANCE PRODUCTS Ordering Information Model Number Package E118AHF 64-pin MQFP 14 mm x 14 mm Body w/Internal Spreader D118 Die Form EVM118AHF Edge118 Evaluation Module Contact Information Semtech Corporation Edge High-Performance Division 10021 Willow Creek Rd., San Diego, CA 92131 Phone: (858)695-1808 FAX (858)695-2633 2000 Semtech Corp. 11 www.semtech.com