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MAXIM Evaluates: MAX2338 Manual(1)

1. ABS RAR 19 1807 Rev 1 4 03 NER ARAM MMAR General Description The MAX2338 evaluation kit EV kit simplifies evalua tion of the MAX2338 dual band triple mode LNA and mixers This kit allows evaluation of the device s low noise amplifiers LNA downconverters and buffers Figure 1 shows the MAX2338 EV kit schematic The EV kit provides 50Q SMA connectors for all RF and IF input and output signals Component Suppliers MA d aldi MAX2338 Evaluation Kit Features Easy Evaluation of the MAX2338 2 7V to 3 3V Single Supply Operation All Critical Matching Components Included Cellular Band RF Ports Matched to 880MHz PCS Band RF Ports Matched to 1960MHz SMA Connectors for all RF and IF Signal Ports Easy Configuration of Operating Modes gt SUPPLIER PHONE FAX WEB AVX 803 946 0690 803 626 3123 avx corp com EFJohnson 402 474 4800 402 474 4858 efjohnson com Kamaya 219 489 1533 219 489 2261 kamaya com Murata 949 852 2001 949 852 2002 murata com Toko 708 297 0070 708 699 1194 toko com Ordering Information PART TEMP RANGE IC PACKAGE MAX2338EVKIT 40 C to 85 C 28 QFN Note When contacting these suppliers please specify that you are using the MAX2338 DESIGNATION DESCRIPTION Component List DESIGNATION DESCRIPTION 0 1pF 10 ceramic capacitors 0402 Murata GRM39X7R103K016A
2. 7 Turn on the DC supply If an ammeter is connected the supply current should read approximately 28mA for cellular band 25mA for PCS 8 The network analyzer display should indicate a typi cal gain of 15 7dB for cellular band and 15 3dB for PCS band after accounting for board losses The input and output board losses are 0 12dB for the cellular band The input and output board losses for PCS band are 0 17dB and 0 3dB respectively These losses are to be added to the measurements to obtain the performance of the LNAs Downconverter 1 Turn off the DC supply 2 Remove the network analyzer from the LNA input and output connections The DC supply connec tions needed for testing the downconverter mixer are the same as in the LNA section 3 Set the LO 2 jumper JU5 to Vcc ON to enable the LO divider circuit for cellular band When testing PCS band this jumper setting has no effect 4 Set the BAND jumper JU1 on the EV kit to Vcc HIGH to test cellular band JU1 to GND for PCS MAAILM MAX2338 Evaluation Kit 5 Set the LIN jumper JU3 on the EV kit to Vcc HIGH to test cellular and PCS downconverters in high linearity mode 6 Connect an RF signal generator with output dis abled to the LOIN connector Set the frequency to 2126MHz for cellular band 2143Mhz for PCS and the output power to 3dBm 7 Connect another RF signal generator with output disabled to the CMIXIN SMA connector Set the frequ
3. 219 DEI LL01 8089 AS8OMOLNN IVE Jonn _ CAT 7 e me T 40000 1n0019 yns on OLY N3d0 Ely vl EL O N 1N0019 00 GND MO 2 01 N9 boy v9 W4 ST 127 3 40001 TE 929 ay 1N001d vg v0 om Nid ZLY 4dzz 660 CL LL W I 6 8EECXVN Wl LS le lie In XIND NIXINd AND AND LNOVNId ANY LNOY BEEZXVWN SOIENJEAZ 60 l moo _L 4doo he HUH 1NOYNId 44620 7 YAS o znr HULZ S mas JIA v GER Oo 077 DUT y IJA OAL DU 4dooo T L um 440089 MIO HU YS HU Nado_L T Hl SLO T N3d0 _ 440089 Me EL T PU Yns DIE FL cu f o 44272 1N0YN19 De DS 4do0L L _L 47100 29 19 Figure 1 MAX2338 EV Kit Schematic MAKIM MAX2338 Evaluation Kit Figure 2 MAX2338 EV Kit PC Board Layout Front Side Figure 3 MAX2338 EV Kit PC Board Layout Ground Layer 2 Figure 4 MAX2338 EV Kit PC Board Layout Ground Layer 3 Figure 5 MAX2338 EV Kit PC Board Layout Back Side MAAILM 5 8EECXVAN SoFeNIeAZ Evaluates MAX2338 MAX2338 Evaluation Kit oe ee Bess e On OB w Kee Chi y ws ee en mW wll Figure 6 MAX2338 EV Kit Component Placement Guide Front Side ig M man c9 Qu Sa Ai Wery g o n rE 3 1 0 Figure 7 MAX2338 EV Kit Component Placement Guide Back Side Maxim cannot assume responsi
4. C1 C4 C9 100pF 5 ceramic capacitors 0402 Murata GRM36COG101J050A C2 C3 C24 C27 6800pF 10 ceramic capacitors 0402 Murata GRM36X7R682025A C5 C14 C16 C6 C13 C15 C17 C21 Not Installed 2 7pF 0 1pF ceramic capacitor 0402 Murata GRM36COG2R7B050A 22pF 5 ceramic capacitor 0402 Murata GRM36COG220J050A C22 4 0pF 0 1pF ceramic capacitors 0402 Murata GRM36COGO040B050A C23 C25 22uF 10V min tantalum capacitor AVX TAJC226K010 15pF 5 ceramic capacitor 0603 Murata GRM39COG150J050A 4 7pF 0 1pF ceramic capacitors 0402 Murata GRM36COG4R7B050 C31 0 75pF 0 1pF ceramic capacitor 0402 Murata GRM36COGR75B050A 7pF 0 1pF ceramic capacitor 0402 Murata GRM36COGO070B050A C10 R1 R4 R5 R6 R8 R2 R3 1kQ 5 resistors 0402 24 3Q 1 resistors 0402 3 3kQ 1 resistor 0402 0Q resistors 0402 8 25kQ 5 resistor 0402 C11 C18 C19 C20 C26 C28 C33 1000pF 10 ceramic capacitors 0402 Murata GRM36X7R102050A 0Q resistor 0402 Not installed 209 1 resistor 0402 4 8 2nH inductor Toko LL1608 FS8N2J Note Components in bold text are on the backside of the PC board dl d Slab Maxim Integrated Products 1 For pricing delivery and ordering information please contact Maxim Dallas Direct at 1 888 629 4642 or visit Maxim s website at www maxim ic com BEEZXVWN S9IENJEAZ E
5. MA connectors Ammeter optional For measuring supply current Noise Figure Meter optional Quick Start The MAX2338 EV kit is fully assembled and factory test ed Follow the instructions in the Connections and Setup section for proper device evaluation HP8970B or equivalent for measuring the noise figure of the LNA and downconverters Connections and Setup This section provides a step by step guide to setting up the MAX2338 EV kit and testing the LNA and downcon verters Do not turn on the DC power or RF signal generators until all connections are made MAKIM Low Noise Amplifier High Gain High Linearity Mode 1 Set the GAIN jumper JU4 on the EV kit to Vcc HIGH This enables the LNA to operate in high gain mode 2 Set the BAND jumper JU1 on the EV kit to Vcc HIGH to test cellular band JU1 to GND for PCS 3 Set the LIN jumper JU3 on the EV kit to Vcc HIGH to test the amplifiers in high linearity mode 4 Connect a DC supply preset to 3V through an ammeter if desired to the EV kit s Vcc and GND terminals Do not turn on the supply 5 Perform a full two port calibration on a network ana lyzer at a power level of 30dBm over frequency range of 800MHz to 900MHZ for cellular band 1900MHz to 2000MHZ for PCS band 6 Connect port 1 and port 2 of the network analyzer to CLNAIN PLNAIN for PCS and CLNAOUT PLNAOUT for PCS respectively to measure the cellular PCS band gain
6. bility for use of any circuitry other than circuitry entirely embodied in a Maxim product No circuit patent licenses are implied Maxim reserves the right to change the circuitry and specifications without notice at any time 6 Maxim Integrated Products 120 San Gabriel Drive Sunnyvale CA 94086 408 737 7600 2003 Maxim Integrated Products Printed USA MAXIM is a registered trademark of Maxim Integrated Products
7. ency to 880MHz for cellular band 1960MHz for PCS band and the output power to 25dBm 8 Connect the spectrum analyzer to the IFOUT SMA connector Set the spectrum analyzer center fre quency to 183MHz 9 Turn on the DC supply Enable the LO signal gener ator and FF input signal generator outputs 10 Measure the peak of the 183MHz IF signal on the spectrum analyzer Compensate the IF signal con version gain for the balun and board losses Balun loss is 0 3dB and the input and output board losses are 0 1dB each 11 The conversion gain for cellular and PCS band are typically 13 3dB and 14 5dB respectively after corrections from step 10 are applied Checking Noise Figure Noise figure measurements are sensitive to board and lab setup losses and parasitics There are many tech niques and precautions for measuring a low noise fig ure Detailed explanation of these items goes beyond the scope of this document For more information on how to perform this level of noise figure measurement refer to the noise figure meter operating manual as well as to Hewlett Packard application note 57 2 Noise Figure Measurement Accuracy PC Board Layout Considerations The MAX2338 EV kit can serve as a board layout guide Keep PC board trace lengths as short as possible to minimize parasitics Keep decoupling capacitors close to the device with a low inductance connection to the ground plane BEEZXVWN S9IENJEAZ MAX2338 Evaluation Kit
8. valuates MAX2338 MAX2338 DESIGNATION Evaluation Kit DESCRIPTION Component List continued DESIGNATION DESCRIPTION L2 L12 2 7nH inductors Toko LL1608 FS2N7S OQ resistor 0603 2 2nH inductor Toko LL1608 FS2N2S 3 9nH inductor Toko LL1608 FS2N9J 5nH inductor Toko LL1608 FS15J 120nH inductors Toko LL1608 FS15J L10 Not installed 71 Power Supply Balun transformer Toko B5F 458Db 1011 MAX2338EGI 44 pin QFN NOTE U1 HAS AN EXPOSED PADDLE WHICH IS SOLDERED TO THE CIRCUIT BOARD GROUND PLANE JU2 20Q 1 resistor 0603 JU6 JU8 JU10 1 x2 headers 0 1 inch centers 1 x3 headers 0 1 inch centers Shunts IXIN CMIXIN CLOOU SMA connectors PC mount Johnson 142 0701 201 CLNAOUT IFOUT PLNAOUT PLNAIN CLNAIN LOIN PLOOUT FMOUT VCC G Test points MAX2338 data sheet MAX2338 EV kit data sheet MAX2338 Rev A EV kit circuit board SMA connectors edge mount Johnson 142 0701 801 Recommended Test Equipment Capable of providing at least 100mA at 2 7V to 3 3V RF Signal Generators 2 2500MHz HP 8648C or equivalent capable of delivering 50dBm to 10dBm of output power from 800MHz to Network Analyzer Spectrum Analyzer Cables 50Q HP8753 or equivalent covering the MAX2338 operating frequency range HP8561E or equivalent covering MAX2338 operating frequency range Three 50Q cables with S

MAXIM Evaluates: MAX2338 Manual(1)

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