MAX2027EVKIT 查看數據表（PDF） - Maxim Integrated
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MAX2027EVKIT Datasheet PDF : 8 Pages
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MAX2027 Evaluation Kit
Table 1. Suggested Components for
Matching
FREQUENCY COMPONENT
(MHz)
L3, L4
300
C8, C9
L3, L4
400
C8, C9
VALUE
11nH
6.8pF
8.7nH
5pF
SIZE
0603
0603
0603
0603
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 VCC and
ICC, 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
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.
Table 2. Attenuation Setting vs. Gain-
Control Bits
ATTENUATION B4
B3* B2
B1
B0
(dB)
(16dB) (8dB) (4dB) (2dB) (1dB)
0
0
0
0
0
0
1
0
0
0
0
1
2
0
0
0
1
0
3
0
0
0
1
1
4
0
0
1
0
0
5
0
0
1
0
1
6
0
0
1
1
0
7
0
0
1
1
1
8
0
1
0
0
0
9
0
1
0
0
1
10
0
1
0
1
0
11
0
1
0
1
1
12
0
1
1
0
0
13
0
1
1
0
1
14
0
1
1
1
0
15
0
1
1
1
1
16
1
X
0
0
0
17
1
X
0
0
1
18
1
X
0
1
0
19
1
X
0
1
1
20
1
X
1
0
0
21
1
X
1
0
1
22
1
X
1
1
0
23
1
X
1
1
1
*Enabling B4 disables B3.
Testing the Supply Current
1) Connect 50Ω 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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