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参数资料
| 型号： | MAX2055EVKIT |
| 厂商： | Maxim Integrated |
| 文件页数： | 2/7页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX2055 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 放大器 |
| 频率： | 30MHz ~ 300MHz |
| 适用于相关产品： | MAX2055 |
| 已供物品： | 板 |
MAX2055 Evaluation Kit
Quick Start
The MAX2055 EV kit is fully assembled and factory test-
Table 1. Attenuation Setting vs. Gain-
Control Bits
ed. Follow the instructions in the Connections and
Setup section for proper device evaluation. Table 1 lists
the attenuation setting vs. gain-control bit.
Test Equipment Required
? DC supply capable of delivering 5.25V and 400mA
of continuous current
? HP 8648 (or equivalent) signal source
? HP 8561E (or equivalent) spectrum analyzer capa-
ble of covering the MAX2055 ’ s frequency range, as
well as a few harmonics
? Two digital multimeters (DMMs) to monitor V CC and
I CC , if desired
? HP 8753D (or equivalent) network analyzer to mea-
sure return loss and gain
? 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 (20dB typ). See Table 1 for other gain-
setting 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 the data
ATTENUATION
(dB)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
B4
(16dB)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
B3*
(8dB)
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
X
X
X
X
X
X
X
X
B2
(4dB)
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
B1
(2dB)
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
B0
(1dB)
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
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 can damage the part.
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 400mA.
3) Enable the DC supply; the supply current should
read approximately 250mA.
Testing the Power Gain
1) Connect the RF signal generator to the RF_IN SMA
connector. Do not turn on the generator ’ s output. Set
* Enabling B4 disables B3 and the minimum attenuation is
16dB.
the generator to an output frequency of 70MHz, and
set the generator power level to -15dBm.
2) Connect the spectrum analyzer to the RF_OUT SMA
connector. Set the spectrum analyzer to a center fre-
quency of 70MHz and a total span of 1MHz.
3) 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 400mA.
4) Connect B4 – B0 to GND for 0dB attenuation.
5) Enable the DC supply, and then activate the RF gen-
erator ’ s output. A 70MHz signal shown on the spec-
2
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