19-2065; Rev 0; 6/01 MAX3877/MAX3878 Evaluation Kits Features ♦ SMA Connections for All High-Speed I/Os ♦ Test Points for Monitoring LOL and LOS ♦ Single +3.3V Power-Supply Operation ♦ Fully Assembled and Tested The MAX3877 has CML outputs and the MAX3878 has PECL outputs. Both the MAX3877 and MAX3878 EV kits come complete with on-board output structures to allow direct connection to 50Ω oscilloscopes and test equipment. Ordering Information PART TEMP. RANGE IC PACKAGE MAX3877EVKIT -40°C to +85°C 32 TQFP-EP* MAX3878EVKIT -40°C to +85°C 32 TQFP-EP* * Exposed pad Component List DESIGNATION C1–C10, C12–C16, C21–C26, C29, C30 C11 C17, C18, C27, C28 QTY DESCRIPTION DESIGNATION QTY DESCRIPTION MAX3877EHJ (5mm 32-pin TQFP-EP) (MAX3878EVKIT) 23 0.1µF ±10% ceramic capacitors (0603) U1 1 1µF ±10% ceramic capacitor (1206) D1 1 Red LED 0.1µF capacitors (0603) (MAX3877EVKIT) D2 1 Green LED 0Ω resistors (0603) (MAX3878EVKIT) TP1, TP2 2 Test points JP1, JP4 2 2-pin headers (0.1in centers) JP2, JP5, JP6, JP10 4 3-pin headers (0.1in centers) JP2, JP5, JP6, JP10 4 Shunts JP7 1 Not installed J1–J8 8 SMA connectors (edge-mount) Johnson 142-0701-801 or Digi-Key J502-ND J9, J10 2 VCC, GND 1 MAX3877/MAX3878 EV kit circuit board, Rev C 4 C19 1 33µF ±20%, 10V min tantalum capacitor C20 1 2.2µF ±10% ceramic capacitor (1206) R1, R2 2 392Ω ±1% resistors (0603) R3, R5 2 10kΩ variable resistors Digi-Key 3296W-103-ND R4, R6 2 R7, R11, R15, R19 4 R8, R12, R16, R20 4 R9, R13, R17, R21 4 R10, R14, R18, R22 4 L1, L2, L3, L4 4 1 MAX3878EHJ (5mm 32-pin TQFP-EP) (MAX3878EVKIT) 3.6kΩ ±5% resistors (0603) 0Ω resistors (0402) (MAX3877EVKIT) 24Ω resistors (0402) (MAX3878EVKIT) 0Ω resistors (0402) (MAX3877EVKIT) 27Ω resistors (0402) (MAX3878EVKIT) Open (MAX3877EVKIT) None 130Ω resistors (0402) (MAX3878EVKIT) None 1 MAX3877/MAX3878 data sheet Open (MAX3877EVKIT) None 1 MAX3877/MAX3878 EV kit data sheet 220Ω resistors (0402) (MAX3878EVKIT) 56nH inductors Coilcraft 0805HS-560TKBC ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 Evaluate: MAX3877/MAX3878 General Description The MAX3877/MAX3878 evaluation kits (EV kits) simplify evaluation of the MAX3877/MAX3878 2.5Gbps clock-recovery and data-retiming ICs. These EV kits enable testing of all MAX3877 and MAX3878 functions. SMA connectors are provided for the differential inputs and outputs. Evaluate: MAX3877/MAX3878 MAX3877/MAX3878 Evaluation Kits Detailed Description These EV kits are fully assembled and factory tested. They enable testing of all chip functions. Test Equipment Required • +3.3V power supply with 300mA current capability • Signal source, 2.5Gbps minimum capability • Jitter analyzer capable of 2.5Gbps performance • Oscilloscope with at least 3GHz performance Connections The serial data inputs (SDI±, SLBI±) have on-board AC-coupling capacitors. All of the outputs (SDO±, SCLKO±) are terminated to allow direct connection to 50Ω oscilloscopes or test equipment. Jitter analysis and product performance can also be observed by appropriately interfacing the EV kit with a bit-error-rate tester (BERT) and a jitter analyzer. MAX3877 EV Kit Output Terminations The MAX3877 EV kit has on-board AC-coupling capacitors to allow direct connection of the EV kit outputs to 50Ω equipment. MAX3878 EV Kit Output Terminations The MAX3878 EV kit has on-board termination networks on all high-speed outputs (SDO±, SCLKO±) to interface PECL outputs directly to 50Ω oscilloscopes or test equipment. The on-board interfaces perform the level shifting and attenuation required to interface PECL outputs to 50Ω loads. The attenuation from the network is about 6dB, or half of the voltage swing. Quick Start 1) Verify that there is a shunt across the SDI ENABLE side of jumper JP10. 2) Verify that there is a shunt across the REF DISABLE side of jumper JP6. 3) Verify that there is a shunt across the PHADJ DISABLE side of jumper JP2. 4) Verify that there is a shunt across the THADJ DISABLE side of jumper JP5. 5) Connect +3.3V and ground to the appropriate terminals of the EV kit. 6) Connect a 2.5Gbps PRBS NRZ signal to the SDI± inputs with 50Ω cables. 7) Connect the outputs to a 50Ω high-speed oscilloscope. Table 1. Jumpers, Controls and Test Points 2 NAME TYPE JP1 2-Pin Header Short to disable DC-offset/pulse-width distortion cancellation DESCRIPTION NORMAL POSITION Open (Enabled) JP2 3-Pin Header Disable/Enable phase adjust function PHADJ DISABLE JP4 2-Pin Header Short to disable PLL filter Open (Enabled) JP5 3-Pin Header Disable/Enable threshold adjust function VTH DISABLE JP6 3-Pin Header Select between SDI and SLBI. Refer to data sheet. REF DISABLE JP10 3-Pin Header Select between SDI and SLBI. Refer to data sheet. SDI ENABLE TP1 Test Point LOL test point TP2 Test Point LOS test point R3 Potentiometer Used to adjust PHADJ control voltage R5 Potentiometer Used to adjust THADJ control voltage _______________________________________________________________________________________ MAX3877/MAX3878 Evaluation Kits C19 33µF 10V C20 2.2µF Evaluate: MAX3877/MAX3878 L1 56nH +3.3V VCCPLL C21 0.1µF L2 56nH C22 0.1µF C29 0.1µF C30 0.1µF C15 0.1µF VCCVCO GND C23 0.1µF L3 56nH C24 0.1µF VCCOUT C25 0.1µF L4 56nH C26 0.1µF C3 0.1µF R4 3.6kΩ VCC C14 0.1µF +3.3V VCC +3.3V JP2 C16 0.1µF VCC PLL LOOP FILTER DISABLE C12 0.1µF C11 1µF JP5 D1 R2 392Ω R1 392Ω TP2 JP4 LOS VCC SCLKO+ SIS SCLKO- 23 R9 OPEN 21 20 C7 0.1µF J5 R11 0Ω GND R12 0Ω C18 0.1µF J6 SMA VCCOUT VCCOUT R13 OPEN C8 0.1µF 18 VCCOUT R17 OPEN R14 OPEN R16 0Ω 19 17 R10 OPEN VCC 22 R15 0Ω C9 0.1µF C27 0.1µF J7 SMA R18 OPEN VCC R19 0Ω 16 VCC VCC 15 10 9 24 VCCOUT VCC VCC LREF C17 0.1µF 25 LOL 26 27 PHADJ 28 FIL- 29 FIL+ 30 GND MAX3877 SDI EN VCC 31 SDI+ GND 8 VCC VCC JP10 7 U1 14 SLB1 EN 6 SDI- SLBI+ C2 VCCPLL 0.1µF VCC 13 5 J2 SMA VCC SDO- SLBI- 4 R8 0Ω SMA SDO+ 12 J1 SMA 3 TP1 LOS THADJ VCC 2 C1 VCCPLL 0.1µF GND 11 1 CPWD- 32 C13 0.1µF VCC D2 R7 0Ω R5 10kΩ GND R6 3.6kΩ C4 0.1µF PWD FILTER DISABLE JP1 CPWD+ VCC R3 10kΩ R20 0Ω C28 0.1µF J8 REF CLK ENABLE REF CLK DISABLE GND JP6 VCCPLL VCCVCO SMA R21 OPEN VCCPLL J4 SMA J3 SMA C5 0.1µF C10 0.1µF R22 OPEN VCC C6 0.1µF Figure 1. MAX3877 EV Kit Schematic _______________________________________________________________________________________ 3 Evaluate: MAX3877/MAX3878 MAX3877/MAX3878 Evaluation Kits L1 56nH +3.3V C19 33µF 10V C20 2.2µF VCCPLL C21 0.1µF L2 56nH C22 0.1µF C29 0.1µF C30 0.1µF C15 0.1µF VCCVCO GND C23 0.1µF L3 56nH C24 0.1µF VCCOUT C25 0.1µF L4 56nH C26 0.1µF C3 0.1µF VCC C14 0.1µF R3 10kΩ R4 3.6kΩ VCC +3.3V +3.3V JP2 C16 0.1µF VCC PLL LOOP FILTER DISABLE JP4 C12 0.1µF C11 1µF JP5 R2 392Ω R1 392Ω TP2 TP1 LOS LOS SCLKO+ SIS SCLKO- 23 R9 130Ω J5 20 R10 220Ω R11 24Ω 22 21 C7 0.1µF VCC R12 27Ω VCCOUT GND 18 VCCOUT J6 SMA R13 130Ω R14 220Ω C8 0.1µF R16 27Ω 19 17 C18 0Ω VCCOUT R17 130Ω C27 0Ω J7 SMA R15 24Ω R18 220Ω C9 0.1µF VCC R19 24Ω 16 VCC VCC VCC 15 10 9 24 VCCOUT VCC VCC LREF C17 0Ω 25 LOL 26 27 PHADJ 28 FIL- 29 FIL+ 30 VCC SDI EN VCC GND MAX3878 GND 8 SDI+ 14 JP10 7 VCC SLBI+ SLB1 EN 6 U1 13 C2 VCCPLL 0.1µF SDI- SLBI- 5 J2 SMA SDO- VCC 12 4 SDO+ VCC J1 SMA 3 R8 27Ω SMA VCC THADJ 11 2 C1 VCCPLL 0.1µF GND 31 32 1 CPWD+ C13 0.1µF VCC D1 R7 24Ω R5 10kΩ CPWD- R6 3.6kΩ PWD FILTER DISABLE JP1 GND VCC C4 0.1µF D2 R20 27Ω C28 0Ω J8 REF CLK ENABLE REF CLK DISABLE GND JP6 VCCPLL VCCVCO SMA R21 130Ω VCCPLL J4 SMA J3 SMA C5 0.1µF C10 0.1µF R22 220Ω VCC C6 0.1µF Figure 2. MAX3878 EV Kit Schematic 4 _______________________________________________________________________________________ MAX3877/MAX3878 Evaluation Kits 1.0" Evaluate: MAX3877/MAX3878 Figure 3. MAX3877/MAX3878 EV Kit Component Placement Guide—Component Side _______________________________________________________________________________________ 5 Evaluate: MAX3877/MAX3878 MAX3877/MAX3878 Evaluation Kits 1.0" 1.0" Figure 4. MAX3877/MAX3878 EV Kit PC Board Layout— Component Side 1.0" Figure 5. MAX3877/MAX3878 EV Kit PC Board Layout— Solder Side 1.0" Figure 6. MAX3877/MAX3878 EV Kit PC Board Layout— Power Plane Figure 7. MAX3877/MAX3878 EV Kit PC Board Layout— Ground Plane Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 6 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.