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Maxim MAX9995 Manual Download Page 6

Evaluates: MAX9995

MAX9995 Evaluation Kit

6

_______________________________________________________________________________________

C2
10pF

C3

0.033

µ

F

C1

4pF

C17
0.01

µ

F

C18

0.01

µ

F

R1

1.21k

Ω

VCC

L2
330nH

L1
330nH

R3

10

Ω

C20

150pF

C19

150pF

J2

SMA

IF MAIN OUTPUT

T1

R2

392

Ω

L3

10nH

4:1

4:1

VCC

VCC

VCC

VCC

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

28

29

30

31

32

33

34

35

36

19

20

21

22

23

24

25

26

27

LO2

V

CC

GND

V

CC

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

V

CC

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

0.033

µ

F

J6

SMA

RF DIV INPUT

C8

4pF

C9

0.01

µ

F

R4

1.21k

Ω

L6

10nH

R5

392

Ω

C13
0.01

µ

F

R6

10

Ω

C11

150pF

L5
330nH

C12

150pF

C10

150pF

L4
330nH

J5

SMA

IF DIV OUTPUT

C14

22pF

C15
0.01

µ

F

J4
SMA
LO1

C16
22pF

J3

SMA

LO2

R7
47k

Ω

TP3
LOSEL

VCC

U1

Figure 2. MAX9995 EV Kit Schematic

Summary of Contents for MAX9995

Page 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 ...

Page 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...

Page 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...

Page 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 ...

Page 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...

Page 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 ...

Page 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 ...

Page 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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