MAX2642/MAX2643 Evaluation Kits MAX2642/MAX2643 evaluation kits k

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MAX2642/MAX2643 Evaluation Kits MAX2642/MAX2643 evaluation kits k

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19-1682; 4/00
MAX2642/MAX2643 Evaluation Kits
MAX2642/MAX2643 evaluation kits kits) simplify evaluation MAX2642 MAX2643 low-noise amplifiers (LNAs). These kits enable testing devices' performance require additional support circuitry. signal input output connectors facilitate connection test equipment. MAX2642/MAX2643 kits fully assembled with MAX2642 MAX2643 board, incorporate input matching components optimized 900MHz operation.
Features
Easy Evaluation MAX2642/MAX2643 +2.7V +5.5V Single-Supply Operation Input Output Matched 900MHz Jumper Included Gain/Shutdown Setting Fully Assembled Tested
Evaluate: MAX2642/MAX2643
Component List
DESIGNATION DESCRIPTION 470pF ceramic (0603) Murata GRM39X7R471K050 Taiyo Yuden UMK107 B471KZ 3.3pF ceramic (0603) Murata GRM39COG3R3B050 installed 100pF ceramic caps (0603) Murata GRM39COG101J050 Taiyo Yuden UMK107CH101JZ 47pF ceramic (0603) Murata GRM39COG470J050 Taiyo Yuden UMK107CH470JZ 4.7µF ceramic capacitor (0805) 8.7nH inductor (0603) Coilcraft 0603CS-8N7XJBC resistor (0603) resistor (0603) (MAX2642) resistor (0603) (MAX2643) installed resistor 2-pin headers installed 3-pin header Edge-mount connectors Maxim MAX2642EXT-T MAX2643EXT-T (6-pin SC70) Coilcraft Murata Electronics Taiyo Yuden PART MAX2642EVKIT MAX2643EVKIT
Ordering Information
TEMP. RANGE -40°C +85°C -40°C +85°C PACKAGE SC70-6 SC70-6 MARK
VCC, RFIN, RFOUT
Component Suppliers
SUPPLIERS PHONE www.coilcraft. www.murata. www. t-yuden.com 847-639-6400 847-639-1469 800-831-9172 814-238-0490 800-348-2496 408-434-0375
Maxim Integrated Products
free samples latest literature, visit www.maxim-ic.com phone 1-800-998-8800. small orders, phone 1-800-835-8769.
MAX2642/MAX2643 Evaluation Kits Evaluate: MAX2642/MAX2643
Quick Start
MAX2642/MAX2643 kits fully assembled factory tested. Follow instructions Connections Setup section proper device evaluation. Optional: Another method determining gain using network analyzer. This advantage displaying gain swept frequency band, addition displaying input output return loss. Refer user manual network analyzer setup details. Checking Noise Figure Noise figure measurements low-noise devices such MAX2642/MAX2643 extremely sensitive board setup losses parasitics. There many techniques precautions measuring noise figure. detailed explanation these items would exceed scope this document. Take into account board external components loss when performing noise-figure measurements. typical input losses these kits 0.25dB. more information perform this level noise-figure measurement, refer noise-figure meter operating manual Hewlett Packard's application note #57-2, Noise Figure Measurement Accuracy.
Test Equipment Required
signal generator capable delivering -10dBm output power frequency range covering MAX2642/MAX2643 (800MHz 1000MHz, example) spectrum analyzer that covers operating frequency range power supply capable supplying +2.7V +5.5V coaxial cables with connectors ammeter measure supply current (optional) noise figure meter (optional) network analyzer measuring gain return loss (optional)
Connections Setup
Checking Power Gain Connect supply (preset +3.0V) terminals (through ammeter, desired) kit. generator output frequency 900MHz power level -30dBm. Connect generator's output RFIN connector. Connect coaxial cable from RFOUT connector spectrum analyzer. Turn supply. supply current should read approximately using ammeter). Activate generator's output. signal spectrum analyzer's display should indicate typical gain +17dB after accounting cable board losses. Optional: MAX2642, jumper position. power gain should +3.5dB.
Layout Considerations
Good board layout essential part circuit's design. board serve guide laying board using MAX2642/MAX2643. Generally, node board should have decoupling capacitor located close device, additional capacitors needed long lines. This minimizes supply coupling. Proper grounding pins essential. Connect pins ground plane either directly, through vias, both.
MAX2642/MAX2643 Evaluation Kits Evaluate: MAX2642/MAX2643
100pF OPEN
(MAX2642) (MAX2643)
OPEN
RFOUT
BIAS
RFOUT
100pF
MAX2642 MAX2643
RFIN
470pF
8.7nH 3.3pF
RFIN
47pF
4.7µF
Figure MAX2642/MAX2643 Schematic
MAX2642/MAX2643 Evaluation Kits Evaluate: MAX2642/MAX2643
1.0"
Figure MAX2642/MAX2643 Kits Component Placement Guide-Component Side
1.0"
Figure MAX2642/MAX2643 Kits Board Layout- Component Side
1.0"
Figure MAX2642/MAX2643 Kits Board Layout- Ground Plane Layers
1.0"
Figure MAX2642/MAX2643 Kits Board Layout- Solder Side
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 2000 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

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