19-1528; Rev 1; 5/00 MAX2622/MAX2623/MAX2624 Evaluation Kits Features ♦ Easy Evaluation of MAX2622/MAX2623/MAX2624 ♦ +2.7V to +5.5V Single-Supply Operation ♦ RF Output Matched to 50Ω ♦ All Critical Peripheral Components Included Component List DESIGNATION QTY Ordering Information DESCRIPTION TEMP. RANGE IC-PACKAGE MAX2622EVKIT PART -40°C to +85°C 8 µMAX MAX2623EVKIT -40°C to +85°C 8 µMAX MAX2624EVKIT -40°C to +85°C 8 µMAX C2, C3, C4, C8 4 220pF ±5% ceramic capacitors (0603) Murata GRM39COH0G221J50 C6 1 0Ω resistor (0603) C7 1 0.1µF ±5% ceramic capacitor (0603) Taiyo Yuden EMK107BJ104KA R1, R2 2 1kΩ ±5% resistors (0603) OUT 1 SMA connector (PC edge mount) EFJohnson 142-0701-801 or Digi-Key J502-ND This section lists the recommended test equipment to verify operation of the MAX2622/MAX2623/MAX2624. It is intended as a guide only, and some substitutions are possible. JU1 4 3-pin headers • A two-channel power supply at +2.7V to +5.5V U1 1 MAX2622EUA, MAX2623EUA, or MAX2624EUA • An ammeter (optional) • An RF spectrum analyzer (HP 8561E, for example) that covers the operating frequency range of the MAX2622/MAX2623/MAX2624, as well as a few harmonics • A 50Ω SMA cable Test Equipment Required Component Suppliers SUPPLIER PHONE FAX Murata Electronics 800-831-9172 814-238-0490 Taiyo Yuden 408-573-4150 408-573-4159 NOTE: Please indicate that you are using the MAX2622, MAX2623, or MAX2624 when contacting these component suppliers. Quick Start The MAX2622/MAX2623/MAX2624 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation. 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 8mA. 4) Connect the VCO output to a spectrum analyzer with a 50Ω coaxial cable. 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) Check the output power level (-3dBm typ). ________________________________________________________________ Maxim Integrated Products 1 For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. Evaluate: MAX2622/MAX2623/MAX2624 General Description The MAX2622/MAX2623/MAX2624 evaluation kits (EV kits) simplify evaluation of the MAX2622/MAX2623/ MAX2624 VCOs. These kits enable testing of the devices’ RF performance and require no additional support circuitry. The signal output uses an SMA connector to facilitate the connection to RF test equipment. Evaluate: MAX2622/MAX2623/MAX2624 MAX2622/MAX2623/MAX2624 Evaluation Kits 1 R1 1k 2 TUNE 8 GND N.C. 7 TUNE U1 C2 220pF 3 GND MAX2622 MAX2623 MAX2624 VCC 1 C5 OPEN 6 VCC C4 220pF R2 1k 2 SHDN 4 SHDN 3 SMA OUT OUT JU1 C8 220pF VCC 5 VCC C3 220pF C7 0.1µF Figure 1. MAX2622/MAX2623/MAX2624 EV Kits Schematic 1.0" 1.0" Figure 2. MAX2622//MAX2623/MAX2624 EV Kits Component Placement Guide—Component Side Figure 3. MAX2622//MAX2623/MAX2624 EV Kits PC Board Layout—Component Side 1.0" Figure 4. MAX2622/MAX2623/MAX2624 EV Kits 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. 2 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.