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MAX2027 Evaluation Kit
Table 1. Suggested Components for
Matching
Table 2. Attenuation Setting vs. Gain-
Control Bits
FREQUENCY
(MHz)
300
400
COMPONENT
L3, L4
C8, C9
L3, L4
C8, C9
VALUE
11nH
6.8pF
8.7nH
5pF
SIZE
0603
0603
0603
0603
ATTENUATION
(dB)
0
1
2
B4
(16dB)
0
0
0
B3*
(8dB)
0
0
0
B2
(4dB)
0
0
0
B1
(2dB)
0
0
1
B0
(1dB)
0
1
0
Quick Start
The MAX2027 EV kit is fully assembled and factory test-
ed. Follow the instructions in the Connections and
Setup section for proper device evaluation. Table 2 lists
the attenuation setting vs. gain-control bits.
Test Equipment Required
? DC supply capable of delivering 5.25V and 100mA of
continuous current
? HP 8648 (or equivalent) signal source
? HP 8561E (or equivalent) spectrum analyzer capable
of covering the MAX2027’s frequency range as well
as a few harmonics
? Two digital multimeters (DMMs) to monitor V CC and
I CC , if desired
? HP8753D (or equivalent) network analyzer to measure
return loss and gain
? Lowpass filters to attenuate harmonic output of signal
sources, if harmonic measurements are desired
Connections and Setup
This section provides a step-by-step guide to testing
the basic functionality of the EV kit. As a general pre-
caution to prevent damaging the outputs by driving
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
1
1
1
1
1
1
1
1
X
X
X
X
X
X
X
X
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
high-VSWR loads, do not turn on DC power or RF
signal generators until all connections are made.
Gain Setting
Connect the header pins for B4–B0 to GND for maxi-
mum gain (15dB, typ). See Table 2 for other gain set-
ting configurations. To set a logic high on B4–B0, leave
the respective header pin unconnected as on-board
resistors pull up the logic to +5V. To control B4–B0
using external logic (voltage limits per data sheet),
ensure that +5V is applied to the chip. Failure to do so
can cause the on-chip ESD diodes to draw significant
current and may damage the part.
* Enabling B4 disables B3.
Testing the Supply Current
1) Connect 50 ? terminations to RF_IN and RF_OUT.
2) With the DC supply disabled, set it to +5.0V (through
a low internal resistance ammeter, if desired) and
connect to the +5V and GND terminals on the EV kit.
If available, set the current limit to 100mA.
3) Enable the DC supply; the supply current should
read approximately 60mA.
2
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