Rainbow Electronics MAX9995 User Manual

General Description

The MAX9995 dual, high-linearity, downconversion
mixer provides 6.1dB gain, +25.6dBm IIP3, and 9.8dB
NF for UMTS/WCDMA, DCS, and PCS base-station
applications. The MAX9995 is ideal for low-side LO
injection. (For a mixer variant optimized for high-side
LO injection, contact the factory.)

This device integrates baluns in the RF and LO ports, a
dual-input LO selectable switch, an LO buffer, two double­balanced mixers, and a pair of differential IF output ampli­fiers. The MAX9995 requires a typical LO drive of 0dBm
and supply current is guaranteed to be below 380mA.

These devices are available in a compact 36-pin thin
QFN package (6mm × 6mm) with an exposed paddle.
Electrical performance is guaranteed over the extended
temperature range, from T

C

= -40°C to +85°C.

Applications

Features

♦ 1700MHz to 2200MHz RF Frequency Range

♦ 1400MHz to 2000MHz LO Frequency Range

(MAX9995)

♦ 1900MHz to 2400MHz LO Frequency Range

(Contact Factory)

♦ 40MHz to 350MHz IF Frequency Range

♦ 6.1dB Conversion Gain

♦ +25.6dBm Input IP3

♦ 9.8dB Noise Figure

♦ 66dBc 2RF–2LO Spurious Rejection at

P

RF

= -10dBm

♦ Dual Channels Ideal for Diversity Receiver

Applications

♦ Integrated LO Buffer

♦ Integrated RF and LO Baluns for Single-Ended

Inputs

♦ Low -3dBm to +3dBm LO Drive

♦ Built-In SPDT LO Switch with 50dB LO1–LO2

Isolation and 50ns Switching Time

♦ 44dB Channel-to-Channel Isolation

MAX9995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz

Downconversion Mixer with LO Buffer/Switch

________________________________________________________________ Maxim Integrated Products 1

19-3383; Rev 0; 8/04

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.

cdma2000 is a registered trademark of Telecommunications
Industry Association.

Ordering Information

*EP = Exposed pad.
**T

C

= Case temperature.

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

EXPOSED PADDLE ON THE BOTTOM OF THE PACKAGE

6mm x 6mm THIN QFN (EXPOSED PADDLE)

TOP VIEW

Pin Configuration/

Functional Diagram

UMTS/WCDMA and
cdma2000®3G Base
Stations

DCS1800 and EDGE
Base Stations

PCS1900 and EDGE
Base Stations

PHS/PAS Base Stations

Fixed Broadband
Wireless Access

Wireless Local Loop

Private Mobile Radio

Military Systems

PART TEMP RANGE PIN-PACKAGE

MAX9995ETX T

MAX9995ETX-T TC = -40°C to +85°C 36 Thin QFN-EP*

MAX9995ETX+D TC = -40°C to +85°C

MAX9995ETX+TD TC = -40°C to +85°C

** = -40°C to +85°C 36 Thin QFN-EP*

C

36 Thin QFN-EP*
lead free, bulk

36 Thin QFN-EP*
lead free, T/R

MAX9995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VCC........................................................................-0.3V to +5.5V

LO1, LO2 to GND ...............................................................±0.3V

IFM_, IFD_, IFM_SET, IFD_SET, LOSEL,

LO_ADJ_M, LO_ADJ_D to GND.............-0.3V to (V

CC

+ 0.3V)

RFMAIN, RFDIV, and LO_ Input Power ..........................+20dBm

RFMAIN, RFDIV Current (RF is DC shorted to GND through

balun) ..................................................................................50mA

Continuous Power Dissipation (T

A

= +70°C)
36-Lead Thin QFN (derate 26mW/°C

above +70°C).............................................................2100mW

θ

JA

.................................................................................+38°C/W

θ

JC

................................................................................+7.4°C/W

Operating Temperature Range (Note A) ....T

C

= -40°C to +85°C

Maximum Junction Temperature Range..........................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

DC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, no input RF or LO signals applied, VCC= 4.75V to 5.25V, TC= -40°C to +85°C. Typical values are at V

CC

= 5.0V, TC= +25°C, unless otherwise noted.)

AC ELECTRICAL CHARACTERISTICS

(Typical Application Circuit, VCC= 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources, PLO= -3dBm to +3dBm, fRF=
1700MHz to 2200MHz, f

LO

= 1400MHz to 2000MHz, fIF= 200MHz, with fRF> fLO, TC= -40°C to +85°C. Typical values are at VCC=

5.0V, P

LO

= 0dBm, fRF= 1900MHz, fLO= 1700MHz, fIF= 200MHz, and TC= +25°C, unless otherwise noted.) (Notes 1, 2)

Note A: TCis the temperature on the exposed paddle of the package.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

Supply Current I

LOSEL Input High Voltage V

LOSEL Input Low Voltage V

LOSEL Input Current IIL and I

CC

CC

Total supply current 332 380

VCC (pin 16) 82 90

VCC (pin 30) 97 110

IFM+/IFM- (total of both) 70 90

IFD+/IFD- (total of both) 70 90

IH

IL

IH

4.75 5 5.25 V

2V

0.8 V

-10 +10 µA

mA

RF Frequency f

LO Frequency f

IF Frequency f

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF

LO

(Note 7) 1700 2200 MHz

(Note 7) 1400 2000 MHz

(Contact factory) (Note 7) 1900 2400 MHz

Meeting RF and LO frequency ranges;
IF matching components affect the IF

IF

frequency range (Note 7)

fRF = 1710MHz to 1875MHz 6

C

fRF = 1850MHz to 1910MHz 6.2Conversion Gain G

fRF = 2110MHz to 2170MHz 6.1

40 350 MHz

dB

MAX9995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS (continued)

(Typical Application Circuit, VCC= 4.75V to 5.25V, RF and LO ports are driven from 50Ω sources, PLO= -3dBm to +3dBm, fRF=
1700MHz to 2200MHz, f

LO

= 1400MHz to 2000MHz, fIF= 200MHz, with fRF> fLO, TC= -40°C to +85°C. Typical values are at VCC=

5.0V, P

LO

= 0dBm, fRF= 1900MHz, fLO= 1700MHz, fIF= 200MHz, and TC= +25°C, unless otherwise noted.) (Notes 1, 2)

Note 1: Guaranteed by design and characterization.
Note 2: All limits reflect losses of external components. Output measurements taken at IF outputs of Typical Application Circuit.
Note 3: Production tested.
Note 4: Two tones 3MHz spacing, -5dBm per tone at RF port.
Note 5: Measured at IF port at IF frequency. f

LO1

and f

LO2

are offset by 1MHz.

Note 6: IF return loss can be optimized by external matching components.
Note 7: Operation outside this frequency band is possible but has not been characterized. See the Typical Operating Characteristics.

Gain Variation with Temperature ±0.75 dB

Noise Figure NF

Noise Figure (with Blocker)

Input 1dB Compression Point P

Input Third-Order Intercept Point IIP3 (Notes 3, 4) 23 25.6 dBm

2RF-2LO Spur Rejection 2 x 2

3RF-3LO Spur Rejection 3 x 3

Maximum LO Leakage at RF Port fLO = 1400MHz to 2000MHz -29 dBm

M axi m um 2LO Leakag e at RF P or tf

Maximum LO Leakage at IF Port fLO = 1400MHz to 2000MHz -25 dBm

Minimum RF to IF Isolation fRF = 1700MHz to 2200MHz, fIF = 200MHz 37 dB

LO1-LO2 Isolation P

Minimum Channel-to-Channel
Isolation

LO Switching Time 50% of LOSEL to IF settled to within 2° 50 ns

RF Return Loss 14 dB

LO Return Loss

IF Return Loss LO driven at 0dBm, RF terminated into 50Ω 21 dB

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

fRF = 1710MHz to 1875MHz ±0.5 ±1

fRF = 1850MHz to 1910MHz ±0.5 ±1Gain Variation from Nominal

f

= 2110MHz to 2170MHz ±0.5 ±1

RF

fRF = 1710MHz to 1875MHz 9.7

fRF = 1850MHz to 1910MHz 9.8

f

= 2110MHz to 2170MHz 9.9

RF

22 dB

PRF = -10dBm 66

P

= -5dBm 61

RF

PRF = -10dBm 70 88

P

= -5dBm 60 78

RF

= 0dBm (Note 5) 40 50.5 dB

LO2

40 44 dB

1dB

V

= 5.0V,

CC

= +25°C,

T

C

P

= 0dBm,

LO

= -10dBm

P

RF

(Note 3)

No blockers
present

8dBm blocker tone applied to RF port at
2000MHz, fRF = 1900MHz, fLO = 1710MHz,
P

= -3dBm

LO

(Note 3) 9.5 12.6 dBm

f

= 1900MHz,

RF

= 1700MHz,

f

LO

f

= 1800MHz (Note 3)

SPUR

f

= 1900MHz,

RF

= 1700MHz,

f

LO

f

= 1766.7MHz (Note 3)

SPUR

= 1400MHz to 2000MHz -17 dBm

LO

= 0dBm, P

LO1

= -10dBm, RFMAIN (RFDIV)

P

RF

power measured at IFDIV (IFMAIN),
relative to IFMAIN (IFDIV),
all unused parts terminated at 50Ω

LO port selected 18

LO port unselected 21

dB

dB

dBc

dBc

dB

MAX9995

Dual, SiGe, High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch

4 _______________________________________________________________________________________

Typical Operating Characteristics

(Typical Application Circuit, VCC= 5.0V, PRF= -5dBm, PLO= 0dBm, LO is low-side injected for a 200MHz IF, TC= +25°C.)

CONVERSION GAIN vs. RF FREQUENCY

8.0

7.5

7.0

6.5

6.0

5.5

5.0

4.5

CONVERSION GAIN (dB)

4.0

3.5

3.0
1700 2200

TC = -20°C

TC = +85°C

FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

26.8

26.4

26.0

25.6

IIP3 (dBm)

25.2

24.8

TC = +85°C

TC = -20°C

TC = +25°C

TC = +25°C

CONVERSION GAIN vs. RF FREQUENCY

6.5

6.4

MAX9995 toc01

6.3

6.2

6.1

6.0

5.9

5.8

CONVERSION GAIN (dB)

5.7

5.6

5.5

2100200019001800

1700 2200

PLO = -3dBm to +3dBm

MAX9995 toc02

2100200019001800

FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

26.6

MAX9995 toc04

26.4

26.2

26.0

IIP3 (dBm)

25.8

25.6

25.4

PLO = 0dBm

PLO = -3dBm

MAX9995 toc05

PLO = +3dBm

CONVERSION GAIN vs. RF FREQUENCY

6.5

6.4
VCC = 4.75V

6.3

6.2

6.1

6.0

5.9

5.8

CONVERSION GAIN (dB)

5.7

VCC = 5.25V

5.6

5.5

1700 2200

VCC = 5.0V

FREQUENCY (MHz)

INPUT IP3 vs. RF FREQUENCY

27.0

VCC = 4.75V

VCC = 5.25V

VCC = 5.0V

26.6

26.2

25.8

IIP3 (dBm)

25.4

25.0

MAX9995 toc03

2100200019001800

MAX9995 toc06

MAX9995 toc07

25.2

FREQUENCY (MHz)

2RF - 2LO vs. FUNDAMENTAL FREQUENCY

66

PRF = -5dBm

64

62

60

58

2RF - 2LO (dBc)

56

54

52

50

PLO = 0dBm

FREQUENCY (MHz)

PLO = -3dBm

PLO = +3dBm

21002000190018001700 2200

21002000190018001700 2200

MAX9995 toc08

24.6

FREQUENCY (MHz)

2RF - 2LO vs. FUNDAMENTAL FREQUENCY

66

PRF = -5dBm

64

62

60

58

2RF - 2LO (dBc)

56

54

52

50

VCC = 5.25V

FREQUENCY (MHz)

24.4

FREQUENCY (MHz)

2RF - 2LO vs. FUNDAMENTAL FREQUENCY

75

PRF = -5dBm

70

65

60

55

50

2RF - 2LO (dBc)

45

40

35

30

TC = -20°C

TC = +25°C

FREQUENCY (MHz)

TC = +85°C

21002000190018001700 2200

21002000190018001700 2200

VCC = 4.75V

VCC = 5.0V

21002000190018001700 2200

MAX9995 toc09

21002000190018001700 2200