MAX3675/MAX3676 Evaluation Kits MAX3675/MAX3676 evaluation kits k

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MAX3675/MAX3676 Evaluation Kits MAX3675/MAX3676 evaluation kits k

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19-1419; 4/00
MAX3675/MAX3676 Evaluation Kits
MAX3675/MAX3676 evaluation kits kits) simplify evaluation MAX3675/MAX3676 622Mbps clockrecovery data-retiming with limiting amplifier. kits enable testing MAX3675/MAX3676 functions. They provide selectable analog digital data inputs, well differential PECL-compatible data clock outputs. differential data clock outputs have attenuators on-board allow direct connection highspeed oscilloscope. MAX3675/MAX3676 kits come configured +3.3V operation consume approximately 120mA.
_Features
Connections Data Clock I/Os Test Points Monitoring Received-Signal-Strength Indicator (RSSI) Loss-of-Power (LOP) Loss-of-Lock (LOL) Threshold Level (VTH) +3.3V Single-Supply Operation Fully Assembled Tested
Evaluate: MAX3675/MAX3676
Ordering Information
PART MAX3675EHJEVKIT MAX3676EHJEVKIT TEMP. RANGE -40°C +85°C -40°C +85°C PACKAGE TQFP TQFP
Component Suppliers
SUPPLIER Coilcraft PHONE 847-639-6400 847-639-1469
_Component List
DESIGNATION C1-C4, C7-C10, C13, C21, C23, C25, C22, C24, C26, C28, C29, C11, DESCRIPTION 0.1µF, ceramic capacitors 0.01µF, ceramic capacitors 2.2µF ±20% ceramic (min) tantalum capacitor 100pF, ceramic capacitors 2.2µF, ceramic capacitor Open 0.047µF, ceramic capacitor 0.033µF, ceramic capacitor 33µF ±20% capacitor included. 56nH inductor additional power-supply decoupling, needed. 56nH inductors Coilcraft 0805HS-560TKBC resistors 82.5 resistors 49.9 resistors 24.3 resistors 27.4 resistors DESIGNATION R10, R14, R18, R28, R32, DDI+, DDI-, ADI+, ADI-, SDO+, SDO-, SCLKO+, SCLKOVCC, JP1, JP2, JP4, JP5, JP6, JP7, JP8, JP10 TP1-TP4 None None DESCRIPTION resistors 52.3 resistor (MAX3675EHJ) resistor (MAX3676EHJ) resistor 3.3k resistor potentiometer resistor resistors 120k resistor 100k potentiometer resistor connectors 2-pin headers Installed 3-pin headers 1-pin headers Shunts JP2, JP8, JP10 MAX3675EHJ MAX3676EHJ MAX3675 MAX3676 data sheet
R13, R17, R11, R15, R12, R16,
Maxim Integrated Products
price, delivery, place orders, please contact Maxim Distribution 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
MAX3675/MAX3676 Evaluation Kits Evaluate: MAX3675/MAX3676
_Detailed Description
MAX3675/MAX3676 kits fully assembled factory tested. They enable testing MAX3675/ MAX3676 functions.
SDO+ BIAS-T
Test Equipment Required
+3.3V power supply with 200mA current capability Signal-source, 622Mbps test Jitter analyzer capable 622Mbps performance Oscilloscope with least 1GHz performance
MAX3675EHJ MAX3676EHJ EVKITS
SDOOUTPUT ATTENUATORS REMOVED SDO+ SCLKO+ SCLKO+
BERT
BIAS-T
CLOCK
DATA
ERROR DETECTOR
Connections
digital inputs (DDI+, DDI-) have on-board AC-coupling capacitors followed Thevenin-equivalent terminations. analog inputs (ADI+, ADI-) equipped with loads followed AC-coupling capacitors. Remember that analog inputs MAX3675/MAX3676 must AC-coupled. MAX3675/MAX3676 data clock outputs (SDO+, SDO-, SCLKO+, SCLKO-) terminated on-board with PECL, attenuators. Configured this way, these outputs directly connected inputs high-speed oscilloscope analysis.
SCLKO50
Figure Interface Test Equipment
Setup
Select either PECL (DDI ENABLE) analog (ADI ENABLE) inputs with jumper JP10. Verify that shunt across jumper place. Verify that shunt across pins jumper JP8. Verify that resistor 52.3 (MAX3675) (MAX3676). Connect +3.3V power supply appropriate terminals marked apply power. Connect 622Mbps PRBS signal selected inputs with cables. Connect outputs high-speed oscilloscope. Jitter analysis product performance also observed appropriately interfacing with bit-error-rate tester (BERT) jitter analyzer.
Remove data clock output attenuators those signal lines intend observe. example, intend observe SDO+, then open R10, short bias bias MAX3675/MAX3676 outputs.
Adjustments, Jumpers, Test Points
adjustments available MAX3675/ MAX3676 kits: (R31) PHADJ (R26). used loss-of-power threshold level monitor. PHADJ, although required, used shift sampling edge recovered clock relative center data eye. sure remove jumper intend adjust PHADJ. Table jumper functions. following high-impedance test points provided signal monitoring: RSSI, used monitor received-signal-strength indicator output LOP, used monitor loss power LOL, used monitor loss lock VTH, used monitor threshold voltage level
Interfacing with Test Equipment
jitter analyzers BERTs easily interface with kits' PECL output signal levels. your test equipment requires standard levels, then bias tees required (Figure example, using BERT, must following:
MAX3675/MAX3676 Evaluation Kits
Table Jumper Functions
NAME TYPE 2-Pin 2-Pin DESCRIPTION Disables MAX3675/ MAX3676 loop filter Disables phase adjustment (R26) NORMAL POSITION Open (enabled) Shorted (disabled)
Layout Considerations
MAX3675/MAX3676 performance greatly affected circuit board layout design. good highfrequency design techniques, including minimizing ground inductances using fixed-impedance transmission lines data clock signals.
Evaluate: MAX3675/MAX3676
supplied. JP4, JP5, board trace between 2-Pin JP6, jumper pads open analysis requires 3-Pin Disables adjustment (R31)
Shorted
Pins shorted (enabled)
JP10
Used select between digital inputs (DDI 3-Pin ENABLE) analog inputs (ADI ENABLE) MAX3675/MAX3676
Evaluate: MAX3675/MAX3676
+3.3V 24.3 SDO+ 3.3k 0.01µF +3.3V 24.3 SDOR28 VCCVCO VCCPLL 24.3 27.4 +3.3V SCLK+ 0.1µF 27.4 0.1µF 27.4
OPEN NOTE 2.2µF 0.1µF
DDI+ VCCOUT +3.3V VCCOUT 24.3 0.1µF +3.3V ENABLE VCCOUT
OLC+ OLCRSSI
JP10 49.9 0.01µF 0.033µF OPEN TEST +3.3V 33µF 2.2µF
MAX3675/MAX3676 Evaluation Kits
Figure MAX3675/MAX3676EHJ Kits Schematic
FILTER DISABLE PHASE PHASE DISABLE FIL+ FILVCC PHADJ+ PHADJVCC ENABLE 0.047µF VCCPA DDI+ SDO+ DDIMAX3675EHJ SDOINSEL MAX3676EHJ ADISCLKO+ ADI+ SCLKOVCC CFILT +3.3V 0.1µF 27.4 SCLKR22 SHORT VCCVCO 100k 0.1µF SHORT 100pF VCCPLL 0.1µF 56nH 0.1µF 56nH 0.1µF 100pF VCCPA 100pF VCCOUT 100pF 100pF 100pF 49.9 0.01µF 120k RSSI
+3.3V
0.1µF
0.1µF
82.5
0.1µF
DDI-
0.1µF
82.5
ADI-
ADI+
NOTE 52.3 (MAX3675) (MAX3676)
MAX3675/MAX3676 Evaluation Kits Evaluate: MAX3675/MAX3676
1.0"
1.0"
Figure MAX3675/MAX3676 Kits Component Placement Guide
Figure MAX3675/MAX3676 Kits Board Layout- Component Side
1.0"
1.0"
Figure MAX3675/MAX3676 Kits Board Layout- Ground Plane
Figure MAX3675/MAX3676 Kits Board Layout- Power Plane
MAX3675/MAX3676 Evaluation Kits Evaluate: MAX3675/MAX3676
1.0"
Figure MAX3675/MAX3676 Kits Board Layout- Solder Side
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 2000 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

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