MAX2680/MAX2681/MAX2682 Evaluation Kits MAX2680/MAX2681/MAX2682 e

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MAX2680/MAX2681/MAX2682 Evaluation Kits MAX2680/MAX2681/MAX2682 e

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19-4786; 11/98
MAX2680/MAX2681/MAX2682 Evaluation Kits
MAX2680/MAX2681/MAX2682 evaluation kits kits) simplify evaluation MAX2680/ MAX2681/MAX2682 downconverter mixers. They enable testing device functions require additional support circuitry. Signal inputs outputs connectors ease connection test equipment. three kits share same board have input matching components optimized each device frequency 900MHz. sure select device that meets your performance needs. Consult Selector Guide MAX2680/ MAX2681/MAX2682 data sheet various combinations power gain, input IP3, noise figure, supply current offered each device. output matching components optimized frequency 70MHz. matching components changed match frequencies from 400MHz 2.5GHz frequencies from 10MHz 500MHz. Consult Tables MAX2680/MAX2681/ MAX2682 data sheet component values appropriate each device other operating frequencies.
Features
Easy Evaluation MAX2680/MAX2681/MAX2682 Easy Evaluation Device Functions +2.7V +5.5V Single-Supply Operation Input Matched 900MHz Output Matched 70MHz Input Output Signal Connectors Critical Peripheral Components Included
Evaluate: MAX2680/MAX2681/MAX2682
Components Common Three Kits
DESIGNATION DESCRIPTION 270pF ceramic capacitor (0603) 15pF ceramic capacitor (0603) 1000pF ceramic capacitors (0603) 10µF, tantalum capacitor (0805) Open 330nH inductor Coilcraft 1008HS-330TJBC Open installed, short connectors (edge mount) 3-pin header Eyelets MAX2680/MAX2681/MAX2682 board
Ordering Information
PART TEMP. RANGE PACKAGE SOT23-6 SOT23-6 SOT23-6 MARK AAAR AAAS AAAT
GND, VCC, SHDN None
MAX2680EVKIT -40°C +85°C MAX2681EVKIT -40°C +85°C MAX2682EVKIT -40°C +85°C
Component Suppliers
SUPPLIER Coilcraft Toko America PHONE 803-946-0690 847-639-6400 708-297-0070 803-626-3123 847-639-1469 708-699-1194
MAX2680 Additional Components
DESIGNATION DESCRIPTION 270pF ceramic capacitor (0603) 22nH inductor Toko LL1608-FH22NJ Open MAX2680EUT-T (6-pin SOT23)
Maxim Integrated Products
free samples latest literature: http://www.maxim-ic.com, phone 1-800-998-8800. small orders, phone 1-800-835-8769.
MAX2680/MAX2681/MAX2682 Evaluation Kits Evaluate: MAX2680/MAX2681/MAX2682
MAX2681 Additional Components
DESIGNATION DESCRIPTION 270pF ceramic capacitor (0603) 18nH inductor Toko LL1608-FHI8NJ Open MAX2681EUT-T (6-pin SOT23)
MAX2682 Additional Components
DESIGNATION DESCRIPTION 1.5pF ceramic capacitor (0603) 270pF ceramic capacitor (0603) 10nH inductor Toko LL1608-FH10NJ MAX2682EUT-T (6-pin SOT23)
Quick Start
MAX2680/MAX2681/MAX2682 kits fully assembled factory tested. Follow instructions Connections Setup section proper device evaluation.
quency 970MHz output power level -5dBm. third cable connect connector spectrum analyzer. Take care quality connector adapters spectrum analyzer's input. Avoid BNCtype connectors their high VSWR while operating range.
Test Equipment Required
This section lists recommended test equipment verify operation MAX2680/MAX2681/ MAX2682. intended guide only, some substitutions possible. power supply capable supplying minimum 50mA +2.7V +5.5V HP8561E spectrum analyzer equivalent highsensitivity spectrum analyzer Digital multimeter (DMM) monitor supply voltage supply current desired) HP8648C signal generators equivalent (50) sine-wave sources inputs Three cables (RG-58A/U equivalent)
Analysis
spectrum analyzer's center frequency 70MHz, with frequency span 1MHz. spectrum analyzer's marker read peak power level center frequency. MAX2680 power level nominally -13.4dBm. output power equal input power plus conversion gain downconverter mixer. MAX2680 typical conversion gain 11.6dB. MAX2681 typical conversion gain 14.2dB. MAX2682 typical conversion gain 14.7dB.
Connections Setup
Verify power supply less than +5.5V before connecting supply kit. good starting point +3.0V. Connect power supply between GND, turn power supply Verify jumper "on" position, shorted (SHDN VCC). cable connect signal generator connector kit. signal generator's output frequency 900MHz output power level -25dBm. another cable connect second signal generator connector kit. second signal generator's output fre2
Detailed Description
This section describes circuitry surrounding MAX2680/MAX2681/MAX2682 kits. more detailed information covering device operation, please consult MAX2680/MAX2681/MAX2682 data sheet. Figure schematic MAX2680/MAX2681/ MAX2682 kits. input matching components optimized each device frequency 900MHz. DC-blocking capacitor required port. output matching components, optimized frequency 70MHz independent device chosen. Consult Tables MAX2680/MAX2681/ MAX2682 data sheet components appropriate each device other frequencies. Capacitor
MAX2680/MAX2681/MAX2682 Evaluation Kits
DC-blocking capacitor required input port. Pads left open kits, provided experimentation. left open kits, provided option resistively terminate IFOUT port. Capacitors form decoupling network. Note location each component. 10µF tantalum capacitor, located near connector. This serves central node distribution mixer's supply IFOUT output pull-up inductor Capacitor placed near connection, capacitor placed near device, help reduce high-frequency crosstalk. Capacitor placed near SHDN device, helps filter noise. additional filtering, resistor after cutting short across pads
Modifying
MAX2680/MAX2681/MAX2682 kits easily used frequencies from 400MHz 2500MHz, frequencies from 10MHz 500MHz. operate frequencies other than factory configuration 900MHz 70MHz refer Tables MAX2680/MAX2681/MAX2682 data sheet suggested component values. operation frequencies other than those given here, consult graphs Port Impedance Frequency Port Impedance Frequency Typical Operating Characteristics MAX2680/MAX2681/MAX2682 data sheet follow typical impedance matching methods.
Evaluate: MAX2680/MAX2681/MAX2682
1000pF 270pF SHDN 1000pF 1000pF 15pF OPEN 10µF SHORT
SHDN
MAX2680 MAX2681 MAX2682
OPEN OPEN RFIN IFOUT
330nH
Figure MAX2680/MAX2681/MAX2682 Kits Schematic
MAX2680/MAX2681/MAX2682 Evaluation Kits Evaluate: MAX2680/MAX2681/MAX2682
1.0"
Figure MAX2680/MAX2681/MAX2682 Kits Board Layout -Component Silkscreen
1.0"
Figure MAX2680/MAX2681/MAX2682 Kits Board Layout -Component Side Metal
1.0"
Figure MAX2680/MAX2681/MAX2682 Kits Board Layout -Ground Plane
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 1998 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.

MAX2680/MAX2681/MAX2682 Evaluation Kits MAX2680/MAX2681/MAX2682 e

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