19-1528; Rev 1; 5/00
MAX2622/MAX2623/MAX2624 Evaluation Kits
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 con-
nector to facilitate the connection to RF test equipment.
Features
o
Easy Evaluation of MAX2622/MAX2623/MAX2624
o
+2.7V to +5.5V Single-Supply Operation
o
RF Output Matched to 50Ω
o
All Critical Peripheral Components Included
Evaluate: MAX2622/MAX2623/MAX2624
Component List
DESIGNATION QTY
C2, C3, C4, C8
C6
C7
R1, R2
OUT
JU1
U1
4
1
1
2
1
4
1
DESCRIPTION
220pF ±5% ceramic capacitors (0603)
Murata GRM39COH0G221J50
0Ω resistor (0603)
0.1µF ±5% ceramic capacitor (0603)
Taiyo Yuden EMK107BJ104KA
1kΩ ±5% resistors (0603)
SMA connector (PC edge mount)
EFJohnson 142-0701-801 or
Digi-Key J502-ND
3-pin headers
MAX2622EUA, MAX2623EUA, or
MAX2624EUA
PART
MAX2622EVKIT
MAX2623EVKIT
MAX2624EVKIT
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
IC-PACKAGE
8 µMAX
8 µMAX
8 µMAX
Test Equipment Required
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.
•
•
•
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
MAX2622/MAX2623/MAX2624, as well as a few har-
monics
A 50Ω 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 func-
tions and operation of these EV kits.
1) Connect a DC supply set to +3V (through an amme-
ter, if desired) to the V
CC
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 f
MIN
and f
MAX
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 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.
________________________________________________________________
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.
MAX2622/MAX2623/MAX2624 Evaluation Kits
Evaluate: MAX2622/MAX2623/MAX2624
1
8
N.C.
GND
R1
1k
TUNE
C2
220pF
2
TUNE
7
U1
OUT
C5
OPEN
6
V
CC
C4
220pF
SMA
OUT
3
VCC
R2
1k
GND
MAX2622
MAX2623
MAX2624
1
SHDN
3
2
JU1
4
SHDN
C8
220pF
V
CC
5
C3
220pF
C7
0.1µF
VCC
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.
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