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| 19-2102; Rev 0; 10/94 XX-XXXX;Rev 0; 7/01 MAX2754 Evaluation Kit General Description The MAX2754 evaluation kit (EV kit) simplifies evaluation of the MAX2754 VCO. This kit enables testing of the device's RF performance and requires no additional support circuitry. The signal output uses an SMA connector to facilitate the connection to RF test equipment. o Easy Evaluation of MAX2754 o +2.7V to +5.5V Single-Supply Operation o RF Output Matched to 50 o All Critical Peripheral Components Included Features Evaluates: MAX2754 Component List DESIGNATION C1 QTY 1 DESCRIPTION 0.33F 10% ceramic capacitor (0603) Murata GRM36 334K016 1000pF 10% ceramic capacitors (0402) Murata GRM36X7R102K050 Not installed 330pF 10% ceramic capacitor (0402) Murata GRM36X7R331K050 0.1F 10% ceramic capacitor (0603) Murata GRM39X7R104K016 1k 5% resistors (0402) 0 5% resistor (0402) SMA connectors (edge-mount) EFJohnson 142-0701-801 Digi-Key J502-ND Test points, 1-pin header Mouser 151-203 or equivalent Jumper, SIP3, 3-pin header Digi-Key S9000-ND or equivalent PART MAX2754EVKIT Ordering Information TEMP. RANGE -40C to +85C IC PACKAGE 8 MAX Test Equipment Required This section lists the recommended test equipment to verify operation of the MAX2754. It is intended as a guide only, and some substitutions are possible. * * * Three power supplies at +2.7V to +5.5V An ammeter (optional) An RF spectrum analyzer (HP 8561E, for example) that covers the operating frequency range of the MAX2754, as well as a few harmonics A 50 SMA cable C2, C4 C3, C5 C6 2 0 1 C7 R1, R2 R4 MOD, OUT GND, SHDN, TUNE, VCC JU1 1 2 1 2 * Connections and Setup This section provides a step-by-step guide to the functions and operation of these EV kits. 1) Connect a DC supply set to +3V (through an ammeter, if desired) to the VCC and GND terminals on the EV kit. 2) Apply +3V to the SHDN control input. 3) Turn on the DC supply. The supply current should read about 13.5mA. 4) Connect the VCO output to a spectrum analyzer with a 50 coaxial cable (minimize length). 5) Apply a variable DC voltage to the TUNE input (+0.4V to +2.4V). 6) Check fMIN and fMAX on the spectrum analyzer by varying the tuning voltage. 7) Apply a variable DC voltage to the MOD input (+0.4V to +2.4V). 8) Check modulation peak frequency deviation on the spectrum analyzer by varying the modulation voltage. 9) Check the output power level (-5dBm typ). 4 1 Component Suppliers SUPPLIER Murata Electronics Taiyo Yuden PHONE 800-831-9172 408-573-4150 FAX 814-238-0490 408-573-4159 Note: Please indicate that you are using the MAX2754 when contacting these component suppliers. Quick Start The MAX2754 EV kit is fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation. ________________________________________________________________ Maxim Integrated Products 1 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. MAX2754 Evaluation Kit Evaluate: MAX2754 C1 0.33F 1 VREG VCC VCC 8 C6 330pF 7 C5 OPEN SLIDING CAP. GND2 6 R2 1k C4 1000pF 2 3 VCC C7 0.1F 50 VCC GND OUT SMA TUNE R1 1k 2 C2 1000pF TUNE U1 OUT MAX2754 3 MOD SMA R4 0 C3 OPEN GND1 4 MOD SHDN 5 1 JU1 SHDN Figure 1. MAX2754 EV Kit Schematic 1.0" 1.0" Figure 2. MAX2754 EV Kit Component Placement Guide--Top Silkscreen Figure 3. MAX2754 EV Kit PC Board Layout--Component Side 1.0" Figure 4. MAX2754 EV Kit PC Board Layout--Ground Plane 2 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. 2 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. |
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