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MAX2045/MAX2046/MAX2047 Evaluation Kits
impedance, they are more susceptible to component
parasitics. It is often good practice to relieve the
ground plane directly underneath large components to
reduce associated shunt-C parasitics.
Layout
The EV kit ’ s PC board can serve as a guide for laying
out a board using the MAX2045/MAX2046/MAX2047.
Keep RF signal lines as short as possible to minimize
losses and radiation. Always use controlled-impedance
lines on all high-frequency inputs and outputs and use
low-inductance connections to ground on all GND pins.
At all differential ports, keep the differential lines togeth-
er and of the same length to ensure signal balance. The
PC board layout should provide a large ground pad
under the device for proper RF grounding and thermal
performance. This pad should be connected to the
ground plane of the board by using multiple vias. To
minimize inductance, route the ground pins of the
device to the large ground pad. Solder the exposed pad
on the bottom of the device package to the PC board
exposed pad (refer to the MAX2045/MAX2046/
MAX2047 data sheet).
The MAX2045/MAX2046/MAX2047 EV kits can be used
as a reference for board layout. Gerber files are avail-
able upon request at www.maxim-ic.com.
J1
C1
RF_IN
L1
J3
T1
C2
C3
GND
1
2
VI1
1
24
3
R2
OPEN
C4
C5
VI2
2
CONTROL
AMPLIFIER I
90 °
PHASE
SHIFTER
23
GND
VQ1
3
U1
22
RBIAS
R4
OPEN
C6
C7
VQ2
II1
4
5
MAX2045
MAX2046
MAX2047
CONTROL
AMPLIFIER Q
VECTOR
MULTIPLIER
21
20
GND
GND
R1
280 ?
C8
GND
C9
II2
6
19
V CC
C10
IQ1
7
2.5V
REFERENCE
OUTPUT
STAGE
18
V CC
C16
C17
IQ2
8
17
V CC
C11
VREF
5V
19
20
R6 R5
OPEN 0 ?
R3
0 ?
V CC
C12
RF_OUT
J2 C14
L2
C15
NOTE:
C13
Figure 1. MAX2045/MAX2046/MAX2047 EV Kit Schematic
T2
PLEASE SEE THE PART-SPECIFIC
COMPONENT LIST FOR COMPONENT VALUES.
4
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功能描述:上下转换器 1.6-3.9GHz Up/Down Conversion Mixer
RoHS:否 制造商:Texas Instruments 产品:Down Converters 射频:52 MHz to 78 MHz 中频:300 MHz LO频率: 功率增益: P1dB: 工作电源电压:1.8 V, 3.3 V 工作电源电流:120 mA 最大功率耗散:1 W 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-128
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功能描述:上下转换器 1.6-3.9GHz Up/Down Conversion Mixer
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功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
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功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
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功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
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功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装:
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