Maxim MAX9995 Скачать руководство пользователя страница 7 | Manualshive

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Maxim MAX9995 Скачать руководство пользователя страница 7

Evaluates: MAX9995

MAX9995 Evaluation Kit

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7

Figure 3. MAX9995 EV Kit PC Board Layout—Top Silkscreen

1.0"

Figure 4. MAX9995 EV Kit PC Board Layout—Top Soldermask

1.0"

Figure 5. MAX9995 EV Kit PC Board Layout—Top Layer Metal

1.0"

Figure 6. MAX9995 EV Kit PC Board Layout—Inner Layer 2
(GND)

1.0"

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Содержание MAX9995

Страница 1: ...5 MAX9995 Evaluation Kit ________________________________________________________________ Maxim Integrated Products 1 19 3390 Rev 0 8 04 Component List 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 Ordering Information PART TEMP RANGE IC PACKAGE MAX9995EVKIT TC 40 C to 85 C 36 Thin QFN EP DESIGNATION ...

Страница 2: ...in 3dB pad and cable that is connect ed to IFMAIN IFDIV Losses are frequency depen dent so test this at 200MHz the IF frequency Use this loss as an offset in all output power gain calculations 7 Connect this 3dB pad to the EV kit s appropriate IFMAIN IFDIV connector and connect a cable from the pad to the spectrum analyzer 8 Set the DC supply to 5 0V and set a current limit around 500mA if possibl...

Страница 3: ...sipate 50mW each TAP Network The network at TAP formed by C2 C3 C6 and C7 helps to terminate the second order intermodulation products at the RF inputs IND_EXT The 10nH wire wound inductors L3 and L6 improve LO to IF and RF to IF isolation If isolation is not critical then the corresponding pins can be grounded IF Outputs The MAX9995 employs a differential IF output to offer increased IP2 system p...

Страница 4: ... SIGNAL GENERATOR HP 8648B RF POWER METER GIGA 80701A HP 437B RF HIGH POWER SENSOR AMMETER 3dB 3dB 3dB 3dB LO2 RFMAIN RFDIV LO1 IFMAIN IFDIV 5V GND MAX9995EVKIT RF SIGNAL GENERATOR HP 8648B RF SIGNAL GENERATOR HP 8648B 1900 000MHz 1700 000MHz 1701 000MHz 5 0V MAX RF SPECTRUM ANALYZER HP 8561x BENCH MULTIMETER HPIB HP 34401A LOSEL GND OPEN Figure 1 Test Setup Diagram ...

Страница 5: ...in the RF path may need the ground plane relieved under them to reduce shunt capacitance Modifying the EV Kit The RF and LO inputs are broadband matched so there is no need to modify the circuit for use anywhere in the 1700MHz to 2200MHz RF range 1400MHz to 2000MHz LO range Retuning for a different IF frequency is as simple as scaling the values of the IF pullup inductors up or down with frequency...

Страница 6: ...3 24 25 26 27 LO2 VCC GND VCC GND GND TAPDIV TAPMAIN RFMAIN RFDIV EXPOSED PADDLE IFD_SET GND IND_EXTD LO_ADJ_D N C V CC V CC N C LO_ADJ_M V CC IND_EXTM GND IFM_SET IFD IFD V CC IFM IFM LO1 LOSEL GND GND GND GND GND VCC MAX9995 C4 22pF C7 10pF VCC VCC VCC VCC T2 VCC TP1 5V TP2 GND C21 150pF J1 SMA RF MAIN INPUT C5 22pF C6 0 033µF J6 SMA RF DIV INPUT C8 4pF C9 0 01µF R4 1 21kΩ L6 10nH R5 392Ω C13 0 ...

Страница 7: ...____________________________________________ 7 Figure 3 MAX9995 EV Kit PC Board Layout Top Silkscreen 1 0 Figure 4 MAX9995 EV Kit PC Board Layout Top Soldermask 1 0 Figure 5 MAX9995 EV Kit PC Board Layout Top Layer Metal 1 0 Figure 6 MAX9995 EV Kit PC Board Layout Inner Layer 2 GND 1 0 ...

Страница 8: ...___Maxim Integrated Products 120 San Gabriel Drive Sunnyvale CA 94086 408 737 7600 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products Evaluates MAX9995 MAX9995 Evaluation Kit Figure 7 MAX9995 EV Kit PC Board Layout Inner Layer 3 Routes 1 0 Figure 8 MAX9995 EV Kit PC Board Layout Bottom Layer Metal 1 0 Figure 9 MAX9995 EV Kit PC Board Layout Bottom Sol...

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