MAXIM MAX9986 Technical data

General Description

The MAX9986 high-linearity downconversion mixer pro­vides 10dB gain, +23.6dBm IIP3, and 9.3dB NF for
815MHz to 995MHz base-station receiver applications.
With a 960MHz to 1180MHz LO frequency range, this
particular mixer is ideal for high-side LO injection
receiver architectures. Low-side LO injection is sup­ported by the MAX9984, which is pin-for-pin and func­tionally compatible with the MAX9986.

In addition to offering excellent linearity and noise perfor­mance, the MAX9986 also yields a high level of compo­nent integration. This device includes a double-balanced
passive mixer core, an IF amplifier, a dual-input LO selec­table switch, and an LO buffer. On-chip baluns are also
integrated to allow for single-ended RF and LO inputs.
The MAX9986 requires a nominal LO drive of 0dBm, and
supply current is guaranteed to be below 265mA.

The MAX9984/MAX9986 are pin compatible with the
MAX9994/MAX9996 1700MHz to 2200MHz mixers,
making this entire family of downconverters ideal for
applications where a common PC board layout is used
for both frequency bands. The MAX9986 is also func­tionally compatible with the MAX9993.

The MAX9986 is available in a compact, 20-pin, thin
QFN package (5mm x 5mm) with an exposed paddle.
Electrical performance is guaranteed over the extended

-40°C to +85°C temperature range.

Applications

850MHz W-CDMA Base Stations

GSM 850/GSM 900 2G and 2.5G EDGE Base
Stations

cdmaOne™ and cdma2000®Base Stations

iDEN®Base Stations

Predistortion Receivers

Fixed Broadband Wireless Access

Wireless Local Loop

Private Mobile Radios

Military Systems

Microwave Links

Digital and Spread-Spectrum Communication
Systems

Features

♦ 815MHz to 995MHz RF Frequency Range
♦ 960MHz to 1180MHz LO Frequency Range

(MAX9986)

♦ 570MHz to 850MHz LO Frequency Range

(MAX9984)

♦ 50MHz to 250MHz IF Frequency Range
♦ 10dB Conversion Gain
♦ +23.6dBm Input IP3
♦ +12dBm Input 1dB Compression Point
♦ 9.3dB Noise Figure
♦ 67dBc 2LO-2RF Spurious Rejection at

P

RF

= -10dBm

♦ Integrated LO Buffer
♦ Integrated RF and LO Baluns for Single-Ended

Inputs

♦ Low -3dBm to +3dBm LO Drive
♦ Built-In SPDT LO Switch with 49dB LO1 to LO2

Isolation and 50ns Switching Time

♦ Pin Compatible with MAX9994/MAX9996 1700MHz

to 2200MHz Mixers

♦ Functionally Compatible with MAX9993
♦ External Current-Setting Resistors Provide Option

for Operating Mixer in Reduced Power/Reduced
Performance Mode

♦ Lead-Free Package Available

MAX9986

SiGe High-Linearity, 815MHz to 995MHz

Downconversion Mixer with LO Buffer/Switch

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration/Functional Diagram and Typical
Application Circuit appear at end of data sheet.

19-3605; Rev 0; 2/05

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.

EVALUATION KIT

AVAILABLE

Ordering Information

*EP = Exposed paddle.

+ = Lead free. D = Dry pack. T = Tape-and-reel.

PART

TEMP RANGE

PIN-PACKAGE

PKG

CODE

MAX9986ETP

5m m × 5m m

T2055- 3

MAX9986ETP-T

5m m × 5m m

T2055- 3

MAX9986ETP+D

5m m × 5m m

T2055- 3

M AX 9986E TP + TD

5m m × 5m m

T2055- 3

cdma2000 is a registered trademark of the Telecommunications
Industry Association.
cdmaOne is a trademark of CDMA Development Group.
iDEN is a registered trademark of Motorola, Inc.

- 40° C to + 85° C

- 40° C to + 85° C

- 40° C to + 85° C

- 40° C to + 85° C

20 Thi n QFN - E P *

20 Thi n QFN - E P *

20 Thi n QFN - E P *

20 Thi n QFN - E P *

MAX9986

SiGe High-Linearity, 815MHz to 995MHz
Downconversion Mixer with LO Buffer/Switch

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(MAX9986 Typical Application Circuit, VCC= +4.75V to +5.25V, no RF signal applied, IF+ and IF- outputs pulled up to VCCthrough
inductive chokes, R

1

= 953Ω, R2= 619Ω, TC= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +5V, TC=

+25°C, unless otherwise noted.)

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.

VCCto GND...........................................................-0.3V to +5.5V

IF+, IF-, LOBIAS, LOSEL, IFBIAS to GND...-0.3V to (V

CC

+ 0.3V)

TAP ........................................................................-0.3V to +1.4V

LO1, LO2, LEXT to GND........................................-0.3V to +0.3V

RF, LO1, LO2 Input Power .............................................+12dBm

RF (RF is DC shorted to GND through a balun) .................50mA

Continuous Power Dissipation (T

A

= +70°C)

20-Pin Thin QFN-EP (derate 26.3mW/°C above +70°C)...........2.1W

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

θ

JC

.................................................................................+13°C/W

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

C

= -40°C to +85°C

Junction Temperature......................................................+150°C

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

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

Note A: T

C

is the temperature on the exposed paddle of the package.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage V

CC

V

Supply Current I

CC

265 mA

LO_SEL Input-Logic Low V

IL

0.8 V

LO_SEL Input-Logic High V

IH

2V

AC ELECTRICAL CHARACTERISTICS

(MAX9986 Typical Application Circuit, VCC= +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO= -3dBm to
+3dBm, P

RF

= -5dBm, fRF= 815MHz to 995MHz, fLO= 960MHz to 1180MHz, fIF= 160MHz, fLO> fRF, TC= -40°C to +85°C, unless

otherwise noted. Typical values are at V

CC

= +5V, P

RF

= -5dBm, PLO= 0dBm, fRF= 910MHz, fLO= 1070MHz, fIF= 160MHz, TC=

+25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RF Frequency Range f

RF

(Note 2)

MHz

(Note 2)

LO Frequency Range f

LO

MAX9984

MHz

IF Frequency Range f

IF

(Note 2) 50

MHz

Conversion Gain G

C

TC = +25°C91011 dB

Gain Variation Over Temperature

TC = -40°C to +85°C

dB/°C

Conversion Gain Flatness

fRF = 824MHz to 849MHz
f

RF

= 869MHz to 894MHz

f

RF

= 880MHz to 915MHz

dB

Input Compression Point P

1dB

(Note 3) 12

dBm

Input Third-Order Intercept Point

IIP3

Two tones:
f

RF1

= 910MHz, f

RF2

= 911MHz,

P

RF

= -5dBm/tone, fLO = 1070MHz,

P

LO

= 0dBm, TA = +25°C

21

dBm

TC = +25°C to -40°C

Input IP3 Variation Over
Temperature

T

C

= +25°C to +85°C

dB

4.75 5.00 5.25

222

815 995

960 1180

570 850

Fl atness over any one of thr ee fr equency b and s:

-0.007

±0.15

23.6

-1.7

+1.0

250

MAX9986

SiGe High-Linearity, 815MHz to 995MHz

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________ 3

Note 1: All limits include external component losses. Output measurements taken at IF output of the Typical Application Circuit.
Note 2: Operation outside this range is possible, but with degraded performance of some parameters.
Note 3: Compression point characterized. It is advisable not to operate continuously the mixer RF input above +12dBm.
Note 4: Measured with external LO source noise filtered so the noise floor is -174dBm/Hz. This specification reflects the effects of all

SNR degradations in the mixer, including the LO noise as defined in Maxim Application Note 2021.

Note 5: Guaranteed by design and characterization.

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX9986 Typical Application Circuit, VCC= +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO= -3dBm to
+3dBm, P

RF

= -5dBm, fRF= 815MHz to 995MHz, fLO= 960MHz to 1180MHz, fIF= 160MHz, fLO> fRF, TC= -40°C to +85°C, unless

otherwise noted. Typical values are at V

CC

= +5V, P

RF

= -5dBm, PLO= 0dBm, fRF= 910MHz, fLO= 1070MHz, fIF= 160MHz, TC=

+25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Noise Figure NF Single sideband, fIF = 190MHz 9.3 dB

P

B LOC K E R

=

+ 8d Bm

19

Noise Figure Under-Blocking

f

L O

= 1090M H z

f

B LOC K E R

= 990M H z

f

I F

= 190M H z

( N ote 4)

P

B LOC K E R

=

+ 11d Bm

24

dB

P

B LOC K E R

=

+ 8d Bm

0.3

Small-Signal Compression
Under-Blocking Condition

f

B LOC K E R

= 911M H z

P

B LOC K E R

=

+ 11d Bm

2

dB

LO Drive -3 +3

dBm

PRF = -10dBm 67

2 x 2 2LO-2RF

P

RF

= -5dBm 62

PRF = -10dBm 87

Spurious Response at IF

3 x 3 3LO-3RF

P

RF

= -5dBm 77

dBc

LO2 selected 42 49

LO1 to LO2 Isolation

P

LO

= +3dBm

T

C

= +25°C (Note 5)

LO1 selected 42 50

dB

LO Leakage at RF Port PLO = +3dBm -47

dBm

LO Leakage at IF Port PLO = +3dBm -30

dBm

RF-to-IF Isolation 46 dB

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

RF Port Return Loss 20 dB

LO1/2 port selected,
LO2/1 and IF terminated

27

LO Port Return Loss

LO1/2 port unselected,
LO2/1 and IF terminated

26

dB

IF Port Return Loss

LO driven at 0dBm, RF terminated into 50Ω,
differential 200Ω

22 dB

f

= 900M H z ( no si g nal )

R F

P

FUNDAMENTAL

f

F U N D A M E N TA L

= -5dBm

= 910M H z

Typical Operating Characteristics

(MAX9986 Typical Application Circuit, VCC= +5.0V, PLO= 0dBm, PRF= -5dBm, fLO> fRF, fIF= 160MHz, unless otherwise noted.)

7

8

10

9

11

12

740 790 840

890 940 990

1040

CONVERSION GAIN vs. RF FREQUENCY

MAX9986 toc01

RF FREQUENCY (MHz)

CONVERSION GAIN (dB)

TC = +85°C

TC = -25°C

TC = -40°C

TC = +25°C

7

8

10

9

11

12

740 790 840 890 940 990 1040

CONVERSION GAIN vs. RF FREQUENCY

MAX9986 toc02

RF FREQUENCY (MHz)

CONVERSION GAIN (dB)

PLO = -3dBm, 0dBm, +3dBm

7

8

10

9

11

12

740 790 840 890 940 990 1040

CONVERSION GAIN vs. RF FREQUENCY

MAX9986 toc03

RF FREQUENCY (MHz)

CONVERSION GAIN (dB)

VCC = 4.75V, 5.0V, 5.25V

19

21

20

23

22

25

24

26

INPUT IP3 vs. RF FREQUENCY

MAX9986 toc04

RF FREQUENCY (MHz)

INPUT IP3 (dBm)

740 790 840 890 940 990 1040

TC = +85°C

TC = -25°C

TC = -40°C

TC = +25°C

19

21

20

23

22

25

24

26

INPUT IP3 vs. RF FREQUENCY

MAX9986 toc05

RF FREQUENCY (MHz)

INPUT IP3 (dBm)

740 790 840 890 940 990 1040

PLO = +3dBm, 0dBm, -3dBm

20

19

23

22

21

25

24

26

INPUT IP3 vs. RF FREQUENCY

MAX9986 toc06

RF FREQUENCY (MHz)

INPUT IP3 (dBm)

740 790 840 890 940 990 1040

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V

6

8

7

10

11

9

12

760 820 880 940 1000

NOISE FIGURE vs. RF FREQUENCY

MAX9986 toc07

RF FREQUENCY (MHz)

NOISE FIGURE (dB)

IF = 190MHz

TC = -40°C

TC = +85°C

TC = +25°C

TC = -25°C

6

7

8

10

11

9

12

760 820 880 940 1000

NOISE FIGURE vs. RF FREQUENCY

MAX9986 toc08

RF FREQUENCY (MHz)

NOISE FIGURE (dB)

PLO = +3dBm, 0dBm, -3dBm

IF = 190MHz

6

7

8

10

11

9

12

760 820 880 940 1000

NOISE FIGURE vs. RF FREQUENCY

MAX9986 toc09

RF FREQUENCY (MHz)

NOISE FIGURE (dB)

IF = 190MHz

VCC = 4.75V, 5.0V, 5.25V

MAX9986

SiGe High-Linearity, 815MHz to 995MHz
Downconversion Mixer with LO Buffer/Switch

4 _______________________________________________________________________________________