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19-1825; Rev 0; 10/00
MAX2750/MAX2751/MAX2752 Evaluation Kits
General Description
The MAX2750/MAX2751/MAX2752 evaluation kits (EV kits) simplify evaluation of the MAX2750/MAX2751/ MAX2752 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.
Features
o Easy Evaluation of MAX2750/MAX2751/MAX2752 o +2.7V to +5.5V Single-Supply Operation o RF Output Matched to 50 o All Critical Peripheral Components Included
Evaluates: MAX2750/MAX2751/MAX2752
Component List
DESIGNATION QTY C2, C3, C4, C5 C1, C6 R1, R2 OUT JU1 U1 4 2 2 1 4 1 DESCRIPTION 220pF 5% ceramic capacitors (0603) Murata GRM39COH0G221J50 0.1F 5% ceramic capacitors (0603) Taiyo Yuden EMK107BJ104KA 1k 5% resistors (0603) SMA connector (PC edge mount) EFJohnson 142-0701-801 3-pin headers MAX2750EUA, MAX2751EUA, or MAX2752EUA PART MAX2750EVKIT MAX2751EVKIT MAX2752EVKIT
Ordering Information
TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C IC-PACKAGE 8 MAX 8 MAX 8 MAX
Test Equipment Required
This section lists the recommended test equipment to verify operation of the MAX2750/MAX2751/MAX2752. It is intended as a guide only, and some substitutions are possible. * * * A two-channel power supply 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 MAX2750/MAX2751/MAX2752, as well as a few harmonics A 50 SMA cable
Component Suppliers
SUPPLIER Murata Electronics Taiyo Yuden PHONE 800-831-9172 408-573-4150 FAX 814-238-0490 408-573-4159
*
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 10mA. 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) Check the output power level (-3dBm typ).
NOTE: Please indicate that you are using the MAX2750, MAX2751, or MAX2752 when contacting these component suppliers.
Quick Start
The MAX2750/MAX2751/MAX2752 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation.
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
MAX2750/MAX2751/MAX2752 Evaluation Kits Evaluates: MAX2750/MAX2751/MAX2752
8 N.C. GND
1 C1 0.1F R1 1k TUNE C2 220pF 3 VCC R2 1k 2
TUNE
7 U1 OUT C5 OPEN 6 VCC C4 220pF
SMA OUT
GND
MAX2750 MAX2751 MAX2752
1 SHDN 3
2 JU1
4 SHDN C8 220pF
VCC
5 C3 220pF C7 0.1F
VCC
Figure 1. MAX2750/MAX2751/MAX2752 EV Kits Schematic
1.0"
1.0"
Figure 2. MAX2750/MAX2751/MAX2752 EV Kits Component Placement Guide--Component Side
Figure 3. MAX2750/MAX2751/MAX2752 EV Kits PC Board Layout--Component Side
1.0"
Figure 4. MAX2750/MAX2751/MAX2752 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 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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