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MAX9985 Evaluation Kit
Component List (continued)
DESIGNATION
TP1
TP2
TP3
QTY
1
1
1
DESCRIPTION
Large test point (red) for 0.062in PCB
Mouser 151-107-RC
Large test point (black) for 0.062in PCB
Mouser 151-103-RC
Large test point (white) for 0.062in PCB
Mouser 151-101-RC
DESIGNATION
U1
QTY
1
DESCRIPTION
MAX9985ETX+ (36-pin thin QFN-EP,
6mm x 6mm)
Note: U1 has an exposed paddle
conductor, which requires it to be
solder-attached to a grounded pad
on the PCB to ensure a proper
electrical/thermal design.
—
1
PCB: MAX9985 Evaluation Kit#
Component Suppliers
SUPPLIER
Coilcraft, Inc.
Digi-Key Corp.
Johnson Components
Mini-Circuits
Murata Mfg. Co., Ltd.
PHONE
800-322-2645
800-344-4539
507-833-8822
718-934-4500
770-436-1300
WEBSITE
www.coilcraft.com
www.digikey.com
www.johnsoncomponents.com
www.minicircuits.com
www.murata.com
Note: Indicate that you are using the MAX9985 when contacting these component suppliers.
Quick Start
Required Test Equipment
Before beginning, the following equipment is required
to verify the operation of the MAX9985 EV kit. It is
intended as a guide only, and some substitutions are
possible.
? One DC power supply (e.g., HP E3631A)
? One digital multimeter (ammeter) (e.g., Fluke 75
Series II)
? Three RF signal generators (e.g., HP/Agilent 8648B)
? One RF power meter (e.g., HP 437B)
? One spectrum analyzer (e.g., HP 8561)
? One high-power sensor (power head) (e.g., HP
8482A)
? Four 3dB attenuators (3dB pads)
? One 50 ? (1W) termination
Connections and Setup
The MAX9985 EV kit is fully assembled and factory test-
ed. Follow the instructions below for proper device
evaluation. This section provides a step-by-step guide
to testing the basic functionality of the EV kit. Caution:
As a general precaution to prevent damaging the out-
puts by driving high-voltage standing-wave ratio
(VSWR) loads, do not turn on the DC power or RF sig-
nal generators until all connections are completed.
1) Calibrate the power meter for 870MHz. For safety
margin, use a power sensor rated to at least
+20dBm, or use padding to protect the power head
as necessary.
2) Connect 3dB pads to DUT ends of each of the three
RF signal generators’ SMA cables. This padding
improves VSWR and reduces the errors due to mis-
match.
3) Use the power meter to set the RF signal generators
according to the following:
RF signal source: -5dBm into DUT at 870MHz
LO1 signal source: 0dBm into DUT at 770MHz
LO2 signal source: 0dBm into DUT at 771MHz
4) Connect the LO1 and LO2 signal sources to the EV
kit LO inputs.
5) Connect the signal sources to the appropriate SMA
inputs. The RF input can be connected to either the
RFMAIN or RFDIV inputs depending on test.
6) Measure loss in the 3dB pad and cable that will be
connected to IFOUT. Losses are frequency depen-
dent, so test this at 100MHz (the IF frequency). Use
this loss as an offset in all output power/gain calcu-
lations.
7) Connect this 3dB pad to the EV kit’s appropriate
IFOUT connector and connect a cable from the pad
to the spectrum analyzer.
2
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MAX9986AETP+ 功能描述:上下转换器 SiGe 815-1000MHz Downconversion 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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