MAXIM MAX2041 User Manual

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General Description

The MAX2041 high-linearity passive upconverter or
downconverter mixer is designed to provide 7.4dB NF
and a 7.2dB conversion loss for an RF frequency range
of 1700MHz to 3000MHz to support UMTS/WCDMA,
DCS, PCS, and WiMAX base-station transmitter or
receiver applications. The IIP3 is typically +33.5dBm
for both downconversion and upconversion operation.
With an LO frequency range of 1900MHz to 3000MHz,
this particular mixer is ideal for high-side LO injection
architectures. (For a pin-compatible mixer meant for
low-side LO injection, refer to the MAX2039.)

In addition to offering excellent linearity and noise perfor­mance, the MAX2041 also yields a high level of compo­nent integration. This device includes a double-balanced
passive mixer core, a dual-input LO selectable switch,
and an LO buffer. On-chip baluns are also integrated to
allow for a single-ended RF input for downconversion (or
RF output for upconversion), and single-ended LO inputs.
The MAX2041 requires a nominal LO drive of 0dBm, and
supply current is guaranteed to be below 145mA.

The MAX2041 is pin compatible with the MAX2031
815MHz to 995MHz mixer, making this family of passive
upconverters and downconverters ideal for applications
where a common PC board layout is used for both fre­quency bands.

The MAX2041 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

UMTS/WCDMA Base Stations

DCS 1800/PCS 1900 EDGE Base Stations

cdmaOneTMand cdma2000®Base Stations

WiMAX Base Stations and Customer Premise Equipment

PHS/PAS Base Stations

Predistortion Receivers

Fixed Broadband Wireless Access

Wireless Local Loop

Private Mobile Radio

Military Systems

Microwave Links

Digital and Spread-Spectrum Communication Systems

Features

♦ 1700MHz to 3000MHz RF Frequency Range

♦ 1900MHz to 3000MHz LO Frequency Range

♦ 1500MHz to 2000MHz LO Frequency Range

(MAX2039)

♦ DC to 350MHz IF Frequency Range

♦ 7.2dB Conversion Loss

♦ +33.5dBm Input IP3

♦ +23.3dBm Input 1dB Compression Point

♦ 7.4dB Noise Figure

♦ Integrated LO Buffer

♦ Integrated RF and LO Baluns

♦ Low -3dBm to +3dBm LO Drive

♦ Built-In SPDT LO Switch with 43dB LO1 to LO2

Isolation and 50ns Switching Time

♦ Pin Compatible with the MAX2031 815MHz to

995MHz Mixer

♦ External Current-Setting Resistor Provides Option

for Operating Mixer in Reduced-Power/Reduced­Performance Mode

♦ Lead-Free Package Available

MAX2041

High-Linearity, 1700MHz to 3000MHz Upconversion/

Downconversion Mixer with LO Buffer/Switch

________________________________________________________________ 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.

Ordering Information

19-3948; Rev 0; 1/06

EVALUATION KIT AVAILABLE

PART

TEMP RANGE

PIN-PACKAGE

PKG

CODE

MAX2041ETP

(5mm x 5mm)
bulk

T2055-3

MAX2041ETP-T

(5mm x 5mm)
T/R

T2055-3

MAX2041ETP+

(5mm x 5mm)
lead-free
bulk

T2055-3

MAX2041ETP+T

(5mm x 5mm)
lead-free
T/R

T2055-3

*EP = Exposed paddle.

T = Tape-and-reel package.
+ = Lead free.

cdmaOne is a trademark of CDMA Development Group.

cdma2000 is a registered trademark of Telecommunications
Industry Association.

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

20 Thin QFN-EP*

-40°C to +85°C

20 Thin QFN-EP*

-40°C to +85°C

20 Thin QFN-EP*

-40°C to +85°C

20 Thin QFN-EP*

-40°C to +85°C

MAX2041

High-Linearity, 1700MHz to 3000MHz Upconversion/
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.

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

TAP, LOBIAS, LOSEL to GND....................-0.3V to (V

CC

+ 0.3V)

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

IF, LO1, LO2 Input Power...............................................+15dBm

RF Input Power .................................................................20dBm

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

Continuous Power Dissipation (T

A

= +70°C)

20-Pin QFN-EP (derated 20mW/°C above +70°C) ..........2.2W

θJA.................................................................................+33°C/W

θ

JC

...................................................................................+8°C/W

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

C

= -40°C to +85°C

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

Storage Temperature Range .............................-65°C to +165°C

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

DC ELECTRICAL CHARACTERISTICS

(MAX2041 Typical Application Circuit, VCC= +4.75V to +5.25V, no RF signals applied, IF+ and IF- DC grounded through a trans­former, T

C

= -40°C to +85°C. Typical values are at VCC= +5V, TC= +25°C, unless otherwise noted.)

PARAMETER

CONDITIONS

UNITS

Supply Voltage V

CC

V

Supply Current I

CC

mA

LO_SEL Input Logic Low V

IL

0.8 V

LO_SEL Input Logic High V

IH

2V

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

AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION)

(MAX2041 Typical Application Circuit, VCC= +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO= -3dBm to
+3dBm, P

RF

= 0dBm, fRF= 1700MHz to 3000MHz, fLO= 1900MHz to 3000MHz, fIF= 200MHz, fLO> fRF, TC= -40°C to +85°C,

unless otherwise noted. Typical values are at V

CC

= +5V, PRF= 0dBm, PLO= 0dBm, fRF= 1900MHz, fLO= 2100MHz, fIF= 200MHz,

T

C

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

PARAMETER

CONDITIONS

UNITS

RF Frequency Range f

RF

MHz

MAX2041

LO Frequency Range f

LO

MAX2039

MHz

IF Frequency Range f

IF

External IF transformer dependent DC

MHz

Conversion Loss L

C

P

RF

< +2dBm 7.2 dB

TC = -40°C to +85°C

dB/°C

Input Compression Point P

1dB

(Note 2)

dBm

IIP3

Two tones:
f

RF1

= 1900MHz,

f

RF2

= 1901MHz,

P

RF

= 0dBm/tone,

f

LO

= 2100MHz,

P

LO

= 0dBm

dBm

Input IP3 Variation Over
Temperature

T

C

= -40°C to +85°C

dB

Noise Figure NF Single sideband 7.4 dB

Noise Figure Under-Blocking

P

RF

= 5dBm, f

RF

= 2000MHz, f

LO

=

2190MHz, f

BLOCK

= 2100MHz

(Note 3)

19 dB

SYMBOL

MIN TYP MAX

4.75 5.00 5.25

104 145

Loss Variation Over Temperature

Input Third-Order Intercept Point

SYMBOL

MIN TYP MAX

1700 3000

1900 3000

1500 2000

0.0075

23.3

33.5

±0.75

350

MAX2041

High-Linearity, 1700MHz to 3000MHz Upconversion/

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________ 3

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LO Drive -3 +3 dBm

2 x 2 2LO - 2RF, PRF = 0dBm 63

Spurious Response at IF

3 x 3 3LO - 3RF, P

RF

= 0dBm 69

dBc

LO2 selected, 1900MHz < f

LO

< 2100MHz 49

LO1 to LO2 Isolation

LO1 selected, 1900MHz < f

LO

< 2100MHz 43

dB

PLO = +3dBm (Note 4)

dBm

PLO = +3dBm -30 dBm

Minimum RF-to-IF Isolation 35 dB

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

RF Port Return Loss 18 dB

LO port selected, LO and IF terminated 16

LO Port Return Loss

LO port unselected, LO and IF terminated 26

dB

IF Port Return Loss

20 dB

AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION) (continued)

(MAX2041 Typical Application Circuit, VCC= +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, PLO= -3dBm to
+3dBm, P

RF

= 0dBm, fRF= 1700MHz to 3000MHz, fLO= 1900MHz to 3000MHz, fIF= 200MHz, fLO> fRF, TC= -40°C to +85°C,

unless otherwise noted. Typical values are at V

CC

= +5V, PRF= 0dBm, PLO= 0dBm, fRF= 1900MHz, fLO= 2100MHz, fIF= 200MHz,

T

C

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

AC ELECTRICAL CHARACTERISTICS (UPCONVERTER OPERATION)

(MAX2041 Typical Application Circuit, VCC= +4.75V to +5.25V, PLO= -3dBm to +3dBm, PIF= 0dBm, fRF= 1700MHz to 3000MHz,
f

LO

= 1900MHz to 3000MHz, fIF= 200MHz, fRF= fLO- fIF, TC= -40°C to +85°C, unless otherwise noted. Typical values are at VCC=

+5V, P

IF

= 0dBm, PLO= 0dBm, fRF= 1900MHz, fLO= 2100MHz, fIF= 200MHz, TC= +25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Compression Point P

1dB

(Note 2)

dBm

IIP3

Two tones:
f

IF1

= 200MHz,

f

IF2

= 201MHz,

P

IF

= 0dBm/tone,

f

LO

= 1900MHz,

P

LO

= 0dBm

dBm

LO - 2IF 67

LO ± 2IF Spur

LO + 2IF 65

dBc

LO - 3IF 75

LO ± 3IF Spur

LO + 3IF 72

dBc

Output Noise Floor P

OUT

= 0dBm

dBm/

Hz

Note 1: All limits include external component losses. Output measurements taken at IF port for downconverter and RF port for

upconverter from the Typical Application Circuit.

Note 2: Compression point characterized. It is advisable not to continuously operate the mixer RF or IF input above +15dBm.
Note 3: 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 4: Refer to the MAX2043 for improved LO leakage of -52dBm typical.

Maximum LO Leakage at RF Port

Maximum LO Leakage at IF Port

-18.5

LO driven at 0dBm, RF terminated into 50Ω

23.3

Input Third-Order Intercept Point

33.5

-160

MAX2041

High-Linearity, 1700MHz to 3000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch

4 _______________________________________________________________________________________

CONVERSION LOSS vs. RF FREQUENCY

MAX2041 toc01

RF FREQUENCY (MHz)

CONVERSION LOSS (dB)

210019001700

5

6

7

8

9

4

1500 2300

TC = +85°C

TC = -40°C

TC = +25°C

CONVERSION LOSS vs. RF FREQUENCY

MAX2041 toc02

RF FREQUENCY (MHz)

CONVERSION LOSS (dB)

210019001700

6

5

7

8

9

4

1500 2300

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

CONVERSION LOSS vs. RF FREQUENCY

MAX2041 toc03

RF FREQUENCY (MHz)

CONVERSION LOSS (dB)

210019001700

6

5

7

8

9

4

1500 2300

VCC = 4.75V, 5.0V, 5.25V

INPUT IP3 vs. RF FREQUENCY

MAX2041 toc04

RF FREQUENCY (MHz)

INPUT IP3 (dBm)

210019001700

31

33

35

37

39

25

27

29

1500 2300

TC = +85°C

TC = -40°C

TC = +25°C

INPUT IP3 vs. RF FREQUENCY

MAX2041 toc05

RF FREQUENCY (MHz)

INPUT IP3 (dBm)

210019001700

31

33

35

37

39

25

27

29

1500 2300

PLO = 0dBm

PLO = -3dBm

PLO = +3dBm

INPUT IP3 vs. RF FREQUENCY

MAX2041 toc06

RF FREQUENCY (MHz)

INPUT IP3 (dBm)

210019001700

31

33

35

37

39

25

27

29

1500 2300

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V

NOISE FIGURE vs. RF FREQUENCY

MAX2041 toc07

RF FREQUENCY (MHz)

NOISE FIGURE (dB)

23502200205019001750

6

7

8

9

10

5

1600 2500

TC = +85°C

TC = -40°C

TC = +25°C

NOISE FIGURE vs. RF FREQUENCY

MAX2041 toc08

RF FREQUENCY (MHz)

NOISE FIGURE (dB)

2200 2350205019001750

6

7

8

9

10

5

1600 2500

PLO = -3dBm

PLO = 0dBm, +3dBm

NOISE FIGURE vs. RF FREQUENCY

MAX2041 toc09

RF FREQUENCY (MHz)

NOISE FIGURE (dB)

2200 2350205019001750

6

7

8

9

10

5

1600 2500

VCC = 4.75V, 5.0V, 5.25V

Typical Operating Characteristics

(MAX2041 Typical Application Circuit, VCC= +5.0V, PLO= 0dBm, PRF= 0dBm, fLO> fRF, fIF= 200MHz, R1 = 549Ω, unless other­wise noted.)

Downconverter Curves

MAX2041

High-Linearity, 1700MHz to 3000MHz Upconversion/

Downconversion Mixer with LO Buffer/Switch

_______________________________________________________________________________________ 5

2LO - 2RF RESPONSE vs. RF FREQUENCY

(LO1 SELECTED)

MAX2041 toc10

FUNDAMENTAL RF FREQUENCY (MHz)

2LO - 2RF RESPONSE (dBc)

210019001700

60

55

50

65

70

75

80

45

1500 2300

TC = +85°C

TC = -40°C

TC = +25°C

PRF = 0dBm

MAX2041 toc11

FUNDAMENTAL RF FREQUENCY (MHz)

2LO - 2RF RESPONSE (dBc)

210019001700

60

55

50

65

70

75

80

45

1500 2300

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm

PRF = 0dBm

2LO - 2RF RESPONSE vs. RF FREQUENCY

(LO1 SELECTED)

MAX2041 toc12

FUNDAMENTAL RF FREQUENCY (MHz)

2LO - 2RF RESPONSE (dBc)

210019001700

60

55

50

65

70

75

80

45

1500 2300

PRF = 0dBm

VCC = 4.75V

VCC = 5.0V

VCC = 5.25V

2LO - 2RF RESPONSE vs. RF FREQUENCY

(LO1 SELECTED)

MAX2041 toc13

FUNDAMENTAL RF FREQUENCY (MHz)

2LO - 2RF RESPONSE (dBc)

210019001700

60

55

50

65

70

75

85

80

45

1500 2300

TC = +85°C

TC = -40°C

TC = +25°C

PRF = 0dBm

2LO - 2RF RESPONSE vs. RF FREQUENCY

(LO2 SELECTED)

MAX2041 toc14

FUNDAMENTAL RF FREQUENCY (MHz)

2LO - 2RF RESPONSE (dBc)

210019001700

60

55

50

65

70

75

85

80

45

1500 2300

PRF = 0dBm

PLO = +3dBm

PLO = 0dBm

PLO = -3dBm

2LO - 2RF RESPONSE vs. RF FREQUENCY

(LO2 SELECTED)

MAX2041 toc15

FUNDAMENTAL RF FREQUENCY (MHz)

2LO - 2RF RESPONSE (dBc)

210019001700

60

55

50

65

70

75

85

80

45

1500 2300

PRF = 0dBm

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V

2LO - 2RF RESPONSE vs. RF FREQUENCY

(LO2 SELECTED)

3LO - 3RF RESPONSE vs. RF FREQUENCY

MAX2041 toc16

FUNDAMENTAL RF FREQUENCY (MHz)

3LO - 3RF RESPONSE (dBc)

210019001700

60

55

50

65

70

75

85

80

45

1500 2300

TC = +85°C

TC = -40°C

TC = +25°C

PRF = 0dBm

3LO - 3RF RESPONSE vs. RF FREQUENCY

MAX2041 toc17

FUNDAMENTAL RF FREQUENCY (MHz)

3LO - 3RF RESPONSE (dBc)

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

210019001700

60

55

50

65

70

75

85

80

45

1500 2300

PRF = 0dBm

3LO - 3RF RESPONSE vs. RF FREQUENCY

MAX2041 toc18

FUNDAMENTAL RF FREQUENCY (MHz)

3LO - 3RF RESPONSE (dBc)

210019001700

60

55

50

65

70

75

85

80

45

1500 2300

PRF = 0dBm

VCC = 5.25V

VCC = 5.0V

VCC = 4.75V

Typical Operating Characteristics (continued)

(MAX2041 Typical Application Circuit, VCC= +5.0V, PLO= 0dBm, PRF= 0dBm, fLO> fRF, fIF= 200MHz, R1 = 549Ω, unless other­wise noted.)

Downconverter Curves