MAX3622 MAX3622EVKIT MAX3622CUE EXS00A-AT00429

MAX3622 Evaluation Kit The MAX3622 evaluation kit (EV kit) is an assembled demonstration board that provides convenient

19-4034; Rev 0; 2/08 MAX3622 MAX3622 Evaluation Kit The MAX3622 MAX3622 evaluation kit (EV kit) is an assembled demonstration board that provides convenient evaluation of the MAX3622 MAX3622 low-jitter, precision clock generator. The EV kit includes a 25MHz crystal on-board to allow immediate testing. The kit includes switches to allow easy control of the enable/disable functions. The clock outputs use SMA connectors and are AC-coupled to simplify connection to test equipment. AC-Coupled I/Os for Ease of Testing Fully Assembled and Tested +3.3V Power-Supply Operation 25MHz Crystal Included On-Board Ordering Information Component Suppliers PART TYPE SUPPLIER WEBSITE MAX3622EVKIT MAX3622EVKIT EV Kit NDK www.ndk.com Component List DESIGNATION QTY C1, C3, C4, C5, C11, C13, C14, C18, C19 9 C2 1 C6, C17, C20 3 C7 1 C9 1 C10 1 J1, J3, J5 J2, J48 J4 0 2 1 DESCRIPTION 0.1F ±10% ceramic capacitors (0402) 10F ±10% ceramic capacitor (0603) 0.01F ±10% ceramic capacitors (0402) 4.7pF ±5% ceramic capacitor (0402) 33pF ±10% ceramic capacitor (0402) 27pF ±10% ceramic capacitor (0402) Not installed Test points 2-pin header, 0.1in. centers DESIGNATION QTY J6, J7, J18 L1 R1, R2 R3 R4 R5, R6 R11 SW1, SW2 TP6, TP7 U1 3 1 2 1 1 0 1 2 2 1 Y1 1 None None 1 1 DESCRIPTION SMA connectors 2.7H inductor 150 ±5% resistors (0402) 36 ±5% resistor (0402) 499 ±1% resistor (0402) Not installed 10.5 ±1% resistor (0402) SPDT switches Test points MAX3622CUE MAX3622CUE+ 25MHz crystal NDK EXS00A-AT00429 EXS00A-AT00429 Shunt PCB: MAX3622 MAX3622 Board, Rev A _ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 1 Evaluates: MAX3622 MAX3622 Features General Description Evaluates: MAX3622 MAX3622 MAX3622 MAX3622 Evaluation Kit Quick Start To evaluate the MAX3622 MAX3622, configure the EV kit as follows: 1) Determine which output is going to be evaluated and connect to the test equipment through an SMA cable(s). 2) Connect a +3.3V power supply to J48 (VCC) and J2 (GND). Set the current limit to 200mA. 3) Enable the output under test by setting the related output-enable switch high. 4) The clock frequency at the LVCMOS output (QA_C) is 125MHz. The clock frequency at the LVPECL output is 156.25MHz. 5) Note that when the LVCMOS output is being evaluated, the amplitude seen on 50 test equipment is attenuated by the on-board circuitry. The voltage swing is approximately one-twelfth of what would be seen by directly connecting QA_C to a high-impedance input. Table 1. Adjustment and Control Descriptions (see Quick Start first) COMPONENT NAME FUNCTION J4 QB_OE Set high to enable LVPECL output QB. Set low to force a logic zero at QB. SW2 2 INDUCTOR SW1 QAC_OE Set high to enable LVPECL output QA. Set low to force a logic zero at QA. J4 shunts the power-supply inductor. Normal operation is J4 shunted. _ MAX3622 MAX3622 Evaluation Kit Evaluates: MAX3622 MAX3622 J4 L1 2.7H J48 +3.3V C5 0.1F J2 GND C14 0.1F J6 C13 0.1F C6 0.01F TP7 J7 QB VCC TP6 QB VCC C17 0.01F R2 150 C18 0.1F R5 OPEN J1 C10 27pF R1 150 Y1 ALT GND R6 OPEN VCC J3 SW1 C9 33pF 16 15 OB_OE 14 GND 13 QB ALT GND 12 QB 11 10 9 VCCO_B X_IN X_OUT GND J5 ALT GND MAX3622 MAX3622 QAC_OE GNDO_A QA_C VDDO_A VCC 1 SW2 C11 J18 0.1F R4 499 2 3 R3 36 4 RES1 RES2 VCCA VCC 5 6 7 8 R11 10.5 VCC QA_C C7 4.7pF C20 0.01F C19 0.1F C1 0.1F C2 10F VCC C4 0.1F C3 0.1F Figure 1. MAX3622 MAX3622 EV Kit Schematic _ 3 Evaluates: MAX3622 MAX3622 MAX3622 MAX3622 Evaluation Kit Figure 2. MAX3622 MAX3622 EV Kit Assembly Drawing-Top Side Figure 3. MAX3622 MAX3622 EV Kit Layout-Component Side 4 _ MAX3622 MAX3622 Evaluation Kit Evaluates: MAX3622 MAX3622 Figure 4. MAX3622 MAX3622 EV Kit Layout-Ground Plane Figure 5. MAX3622 MAX3622 EV Kit Layout-Power Plane _ 5 Evaluates: MAX3622 MAX3622 MAX3622 MAX3622 Evaluation Kit Figure 6. MAX3622 MAX3622 EV Kit Layout-Solder Plane Figure 7. MAX3622 MAX3622 EV Kit Assembly Drawing-Bottom Side 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 © 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.