19-3948; Rev 0; 1/06
VAILABLE
TION KIT A
EVALUA
High-Linearity, 1700MHz to 3000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
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 perfor-
mance, the MAX2041 also yields a high level of compo-
nent 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 fre-
quency 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.
Features
o
1700MHz to 3000MHz RF Frequency Range
o
1900MHz to 3000MHz LO Frequency Range
o
1500MHz to 2000MHz LO Frequency Range
(MAX2039)
o
DC to 350MHz IF Frequency Range
o
7.2dB Conversion Loss
o
+33.5dBm Input IP3
o
o
o
o
+23.3dBm Input 1dB Compression Point
7.4dB Noise Figure
Integrated LO Buffer
Integrated RF and LO Baluns
MAX2041
o
Low -3dBm to +3dBm LO Drive
o
Built-In SPDT LO Switch with 43dB LO1 to LO2
Isolation and 50ns Switching Time
o
Pin Compatible with the MAX2031 815MHz to
995MHz Mixer
o
External Current-Setting Resistor Provides Option
for Operating Mixer in Reduced-Power/Reduced-
Performance Mode
o
Lead-Free Package Available
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
PKG
CODE
Applications
UMTS/WCDMA Base Stations
DCS 1800/PCS 1900 EDGE Base Stations
cdmaOne
TM
and 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
cdmaOne is a trademark of CDMA Development Group.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
MAX2041ETP
20 Thin QFN-EP*
-40°C to +85°C (5mm x 5mm)
T2055-3
bulk
20 Thin QFN-EP*
-40°C to +85°C (5mm x 5mm)
T2055-3
T/R
20 Thin QFN-EP*
(5mm x 5mm)
-40°C to +85°C
T2055-3
lead-free
bulk
20 Thin QFN-EP*
(5mm x 5mm)
-40°C to +85°C
T2055-3
lead-free
T/R
MAX2041ETP-T
MAX2041ETP+
MAX2041ETP+T
*EP
= Exposed paddle.
T
= Tape-and-reel package.
+
= Lead free.
Pin Configuration and Typical Application Circuit appear at
end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
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.
High-Linearity, 1700MHz to 3000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
MAX2041
ABSOLUTE MAXIMUM RATINGS
V
CC
to 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
θ
JA
.................................................................................+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
Note A:
T
C
is the temperature on the exposed paddle of the package.
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.
DC ELECTRICAL CHARACTERISTICS
(MAX2041
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, no RF signals applied, IF+ and IF- DC grounded through a trans-
former, T
C
= -40°C to +85°C. Typical values are at V
CC
= +5V, T
C
= +25°C, unless otherwise noted.)
PARAMETER
Supply Voltage
Supply Current
LO_SEL Input Logic Low
LO_SEL Input Logic High
SYMBOL
V
CC
I
CC
V
IL
V
IH
2
CONDITIONS
MIN
4.75
TYP
5.00
104
MAX
5.25
145
0.8
UNITS
V
mA
V
V
AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION)
(MAX2041
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, P
LO
= -3dBm to
+3dBm, P
RF
= 0dBm, f
RF
= 1700MHz to 3000MHz, f
LO
= 1900MHz to 3000MHz, f
IF
= 200MHz, f
LO
> f
RF
, T
C
= -40°C to +85°C,
unless otherwise noted. Typical values are at V
CC
= +5V, P
RF
= 0dBm, P
LO
= 0dBm, f
RF
= 1900MHz, f
LO
= 2100MHz, f
IF
= 200MHz,
T
C
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
RF Frequency Range
LO Frequency Range
IF Frequency Range
Conversion Loss
Loss Variation Over Temperature
Input Compression Point
P
1dB
SYMBOL
f
RF
f
LO
f
IF
L
C
MAX2041
MAX2039
External IF transformer dependent
P
RF
< +2dBm
T
C
= -40°C to +85°C
(Note 2)
Two tones:
f
RF1
= 1900MHz,
f
RF2
= 1901MHz,
P
RF
= 0dBm/tone,
f
LO
= 2100MHz,
P
LO
= 0dBm
T
C
= -40°C to +85°C
NF
Single sideband
P
RF
= 5dBm, f
RF
= 2000MHz, f
LO
=
2190MHz, f
BLOCK
= 2100MHz
(Note 3)
CONDITIONS
MIN
1700
1900
1500
DC
7.2
0.0075
23.3
TYP
MAX
3000
3000
2000
350
UNITS
MHz
MHz
MHz
dB
dB/°C
dBm
Input Third-Order Intercept Point
IIP3
33.5
dBm
Input IP3 Variation Over
Temperature
Noise Figure
Noise Figure Under-Blocking
±0.75
7.4
19
dB
dB
dB
2
_______________________________________________________________________________________
High-Linearity, 1700MHz to 3000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION) (continued)
(MAX2041
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, RF and LO ports are driven from 50Ω sources, P
LO
= -3dBm to
+3dBm, P
RF
= 0dBm, f
RF
= 1700MHz to 3000MHz, f
LO
= 1900MHz to 3000MHz, f
IF
= 200MHz, f
LO
> f
RF
, T
C
= -40°C to +85°C,
unless otherwise noted. Typical values are at V
CC
= +5V, P
RF
= 0dBm, P
LO
= 0dBm, f
RF
= 1900MHz, f
LO
= 2100MHz, f
IF
= 200MHz,
T
C
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
LO Drive
Spurious Response at IF
LO1 to LO2 Isolation
Maximum LO Leakage at RF Port
Maximum LO Leakage at IF Port
Minimum RF-to-IF Isolation
LO Switching Time
RF Port Return Loss
LO Port Return Loss
IF Port Return Loss
LO port selected, LO and IF terminated
LO port unselected, LO and IF terminated
LO driven at 0dBm, RF terminated into 50Ω
50% of LOSEL to IF settled to within 2°
2x2
3x3
2LO - 2RF, P
RF
= 0dBm
3LO - 3RF, P
RF
= 0dBm
LO2 selected, 1900MHz < f
LO
< 2100MHz
LO1 selected, 1900MHz < f
LO
< 2100MHz
P
LO
= +3dBm (Note 4)
P
LO
= +3dBm
SYMBOL
CONDITIONS
MIN
-3
63
69
49
43
-18.5
-30
35
50
18
16
26
20
TYP
MAX
+3
UNITS
dBm
dBc
dB
dBm
dBm
dB
ns
dB
dB
dB
MAX2041
AC ELECTRICAL CHARACTERISTICS (UPCONVERTER OPERATION)
(MAX2041
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, P
LO
= -3dBm to +3dBm, P
IF
= 0dBm, f
RF
= 1700MHz to 3000MHz,
f
LO
= 1900MHz to 3000MHz, f
IF
= 200MHz, f
RF
= f
LO
- f
IF
, T
C
= -40°C to +85°C, unless otherwise noted. Typical values are at V
CC
=
+5V, P
IF
= 0dBm, P
LO
= 0dBm, f
RF
= 1900MHz, f
LO
= 2100MHz, f
IF
= 200MHz, T
C
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Input Compression Point
SYMBOL
P
1dB
(Note 2)
Two tones:
f
IF1
= 200MHz,
f
IF2
= 201MHz,
P
IF
= 0dBm/tone,
f
LO
= 1900MHz,
P
LO
= 0dBm
LO - 2IF
LO + 2IF
LO - 3IF
LO + 3IF
P
OUT
= 0dBm
CONDITIONS
MIN
TYP
23.3
MAX
UNITS
dBm
Input Third-Order Intercept Point
IIP3
33.5
dBm
LO ± 2IF Spur
LO ± 3IF Spur
Output Noise Floor
67
65
75
72
-160
dBc
dBc
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.
_______________________________________________________________________________________
3
High-Linearity, 1700MHz to 3000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
MAX2041
Typical Operating Characteristics
(MAX2041
Typical Application Circuit,
V
CC
= +5.0V, P
LO
= 0dBm, P
RF
= 0dBm, f
LO
> f
RF
, f
IF
= 200MHz, R1 = 549Ω, unless other-
wise noted.)
Downconverter Curves
CONVERSION LOSS vs. RF FREQUENCY
MAX2041 toc01
CONVERSION LOSS vs. RF FREQUENCY
MAX2041 toc02
CONVERSION LOSS vs. RF FREQUENCY
MAX2041 toc03
9
T
C
= +85°C
8
CONVERSION LOSS (dB)
9
9
8
CONVERSION LOSS (dB)
8
CONVERSION LOSS (dB)
7
T
C
= +25°C
T
C
= -40°C
5
7
P
LO
= -3dBm, 0dBm, +3dBm
6
7
V
CC
= 4.75V, 5.0V, 5.25V
6
6
5
4
1500
1700
1900
2100
2300
1500
1700
1900
2100
2300
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
5
4
1500
1700
1900
2100
2300
RF FREQUENCY (MHz)
4
INPUT IP3 vs. RF FREQUENCY
MAX2041 toc04
INPUT IP3 vs. RF FREQUENCY
MAX2041 toc05
INPUT IP3 vs. RF FREQUENCY
MAX2041 toc06
39
T
C
= +25°C
37
35
33
31
T
C
= -40°C
29
27
25
1500
1700
1900
2100
T
C
= +85°C
39
37
35
33
P
LO
= -3dBm
31
P
LO
= +3dBm
29
27
25
P
LO
= 0dBm
39
37
V
CC
= 5.25V
INPUT IP3 (dBm)
35
33
31
V
CC
= 5.0V
29
27
25
V
CC
= 4.75V
INPUT IP3 (dBm)
INPUT IP3 (dBm)
2300
1500
1700
1900
2100
2300
1500
1700
1900
2100
2300
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
NOISE FIGURE vs. RF FREQUENCY
MAX2041 toc07
NOISE FIGURE vs. RF FREQUENCY
MAX2041 toc08
NOISE FIGURE vs. RF FREQUENCY
MAX2041 toc09
10
T
C
= +85°C
10
P
LO
= -3dBm
10
9
NOISE FIGURE (dB)
9
NOISE FIGURE (dB)
9
NOISE FIGURE (dB)
8
8
8
7
T
C
= +25°C
6
T
C
= -40°C
5
1600
1750
1900
2050
2200
2350
2500
RF FREQUENCY (MHz)
7
P
LO
= 0dBm, +3dBm
7
V
CC
= 4.75V, 5.0V, 5.25V
6
6
5
1600
1750
1900
2050
2200
2350
2500
RF FREQUENCY (MHz)
5
1600
1750
1900
2050
2200
2350
2500
RF FREQUENCY (MHz)
4
_______________________________________________________________________________________
High-Linearity, 1700MHz to 3000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
MAX2041
Typical Operating Characteristics (continued)
(MAX2041
Typical Application Circuit,
V
CC
= +5.0V, P
LO
= 0dBm, P
RF
= 0dBm, f
LO
> f
RF
, f
IF
= 200MHz, R1 = 549Ω, unless other-
wise noted.)
Downconverter Curves
2LO - 2RF RESPONSE vs. RF FREQUENCY
(LO1 SELECTED)
MAX2041 toc10
2LO - 2RF RESPONSE vs. RF FREQUENCY
(LO1 SELECTED)
MAX2041 toc11
2LO - 2RF RESPONSE vs. RF FREQUENCY
(LO1 SELECTED)
P
RF
= 0dBm
V
CC
= 5.25V
MAX2041 toc12
MAX2041 toc18
MAX2041 toc15
80
75
2LO - 2RF RESPONSE (dBc)
70
65
60
55
50
45
1500
1700
1900
T
C
= -40°C
T
C
= +85°C
P
RF
= 0dBm
80
75
2LO - 2RF RESPONSE (dBc)
70
65
60
55
P
LO
= 0dBm
P
RF
= 0dBm
P
LO
= -3dBm
80
75
2LO - 2RF RESPONSE (dBc)
70
65
60
55
V
CC
= 4.75V
50
45
T
C
= +25°C
P
LO
= +3dBm
50
45
2100
2300
1500
1700
1900
2100
2300
V
CC
= 5.0V
1500
1700
1900
2100
2300
FUNDAMENTAL RF FREQUENCY (MHz)
FUNDAMENTAL RF FREQUENCY (MHz)
FUNDAMENTAL RF FREQUENCY (MHz)
2LO - 2RF RESPONSE vs. RF FREQUENCY
(LO2 SELECTED)
MAX2041 toc13
2LO - 2RF RESPONSE vs. RF FREQUENCY
(LO2 SELECTED)
P
RF
= 0dBm
P
LO
= -3dBm
MAX2041 toc14
2LO - 2RF RESPONSE vs. RF FREQUENCY
(LO2 SELECTED)
85
80
2LO - 2RF RESPONSE (dBc)
75
70
65
60
V
CC
= 4.75V
55
50
45
V
CC
= 5.0V
V
CC
= 5.25V
P
RF
= 0dBm
85
80
2LO - 2RF RESPONSE (dBc)
75
70
65
60
55
50
45
1500
1700
1900
T
C
= -40°C
P
RF
= 0dBm
85
80
2LO - 2RF RESPONSE (dBc)
75
70
65
60
55
50
45
P
LO
= +3dBm
T
C
= +85°C
T
C
= +25°C
P
LO
= 0dBm
2100
2300
1500
1700
1900
2100
2300
1500
1700
1900
2100
2300
FUNDAMENTAL RF FREQUENCY (MHz)
FUNDAMENTAL RF FREQUENCY (MHz)
FUNDAMENTAL RF FREQUENCY (MHz)
3LO - 3RF RESPONSE vs. RF FREQUENCY
MAX2041 toc16
3LO - 3RF RESPONSE vs. RF FREQUENCY
MAX2041 toc17
3LO - 3RF RESPONSE vs. RF FREQUENCY
85
80
3LO - 3RF RESPONSE (dBc)
75
70
65
60
55
50
45
V
CC
= 5.0V
V
CC
= 4.75V
V
CC
= 5.25V
P
RF
= 0dBm
85
80
3LO - 3RF RESPONSE (dBc)
75
70
65
60
55
50
45
1500
1700
1900
T
C
= -40°C
T
C
= +85°C
T
C
= +25°C
P
RF
= 0dBm
85
P
RF
= 0dBm
80
3LO - 3RF RESPONSE (dBc)
75
70
65
60
55
50
45
1500
1700
1900
2100
P
LO
= -3dBm, 0dBm, +3dBm
2100
2300
2300
1500
1700
1900
2100
2300
FUNDAMENTAL RF FREQUENCY (MHz)
FUNDAMENTAL RF FREQUENCY (MHz)
FUNDAMENTAL RF FREQUENCY (MHz)
_______________________________________________________________________________________
5
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