MAX2602_1 Datasheet, PDF (1/4 Pages) Maxim Integrated Products – Evaluation Kit

MAX2602 Evaluation Kit
_______________General Description
The MAX2602 evaluation kit (EV kit) simplifies the evalu-
ation of the MAX2602 1W RF power transistor for
900MHz band applications. The EV kit demonstrates
the MAX2602 in a 3.6V, 836MHz, 1W (30dBm) RF
power amplifier for constant-envelope applications.
The EV kit is shipped with a MAX2602, which contains
an internal biasing diode. With a simple modification,
the MAX2602 EV kit can be used to emulate the
MAX2601, which does not have an internal biasing
diode.
____________________________Features
o 1W (30dBm) Output Power at 836MHz
o 50Ω Inputs and Outputs
o +2.7V to +5.5V Supply Range
o 11dB Gain at 836MHz
______________Ordering Information
PART
TEMP. RANGE
MAX2602EVKIT-SO -40°C to +85°C
BOARD TYPE
Surface Mount
____________________Component List
DESIGNATION QTY
DESCRIPTION
C1, C2
2 2pF surface-mount capacitors
C3
1 10pF surface-mount capacitor
C4
1 12pF surface-mount capacitor
C5–C8,
C11, C12
6 1000pF surface-mount capacitors
C9, C11
2 0.1µF surface-mount capacitors
L1
1 100nH surface-mount inductor
L2
1
18.5nH surface-mount spring inductor
Coilcraft A05T (Note 1)
R1
R2
R3
IN, OUT
1 430Ω surface-mount resistor
1 24Ω surface-mount resistor
1 0Ω resistor
2 Edge-mount SMA connectors
U1
1
MAX2602ESA (8-pin, thermally
enhanced SO)
None
1 MAX2601/MAX2602 data sheet
None
1 Printed circuit board
Note 1: Contact Coilcraft by phone at [phone], by fax at
[phone], or on the World Wide Web at
http://www.coilcraft.com.
_________________________Quick Start
The following section provides instructions for setting
up the MAX2602 EV kit as a 1W RF power amplifier.
Test Equipment Required
• RF signal generator capable of at least 20dBm of
output power at 836MHz
• Attenuator that can handle at least 30dBm (1W) of
RF power (used to protect the test equipment)
• RF spectrum analyzer for use at 836MHz (alterna-
tively, a power meter can be used)
• DC power supply capable of delivering 1A at +2.7V
to +5.5V
Connections and Setup
Follow these steps for connecting the EV kit:
1) Connect a 50Ω RF signal generator capable of sup-
plying at least 20dBm at 836MHz to the RF input
SMA connector (“IN”). Set the generator’s initial out-
put to a much lower power (-10dBm, for instance).
Keep this generator’s RF output off at this time.
2) Connect a fixed attenuator that can handle 1W of
power to the output SMA connector (“OUT”). This
attenuator reduces the power to the test equipment
and protects it from overload. Connect this attenua-
tor’s output to a spectrum analyzer that is set to dis-
play 836MHz. It may be possible to set a reference-
level offset on the analyzer to compensate for the
attenuator. Consult your spectrum analyzer’s manu-
al for details.
3) Set the power supply to +3.6V with a 1A current
limit. Disable the output. Connect the power supply
to the V_C terminal on the EV kit through an ammeter.
________________________________________________________________ Maxim Integrated Products 1
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For small orders, phone [phone] ext. 3468.