19-0248; Rev 1; 6/09
High-Linearity, 650MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
MAX2031
General Description
Features
o 650MHz to 1000MHz RF Frequency Range
The MAX2031 high-linearity passive upconverter or
downconverter mixer is designed to provide +36dBm
IIP3, 7dB NF, and 7dB conversion loss for a 650MHz to
1000MHz RF frequency range to support GSM/cellular
base-station transmitter or receiver applications. With a
650MHz to 1250MHz LO frequency range, this particu-
lar mixer is ideal for high-side LO injection architec-
tures. For a pin-to-pin-compatible mixer meant for
low-side LO injection, refer to the MAX2029.
o 650MHz to 1250MHz LO Frequency Range
o 570MHz to 900MHz LO Frequency Range
(Refer to the MAX2029 Data Sheet)
o DC to 250MHz IF Frequency Range
o 7dB Conversion Loss
o +36dBm Input IP3
o +27dBm Input 1dB Compression Point
o 7dB Noise Figure
In addition to offering excellent linearity and noise per-
formance, the MAX2031 also yields a high level of com-
ponent integration. This device includes a double-
balanced passive mixer core, a dual-input LO selec-
table 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 MAX2031 requires a nomi-
nal LO drive of 0dBm, and supply current is guaranteed
to be below 100mA.
o Integrated LO Buffer
o Integrated RF and LO Baluns
o Low -3dBm to +3dBm LO Drive
o Built-In SPDT LO Switch with 49dB LO1 to LO2
Isolation and 50ns Switching Time
o Pin Compatible with the MAX2039/MAX2041
1700MHz to 2200MHz Mixers
o External Current-Setting Resistor Provides Option
for Operating Mixer in Reduced-Power/Reduced-
Performance Mode
The MAX2031 is pin compatible with the MAX2039/
MAX2041 1700MHz to 2200MHz mixers, making this
family of passive upconverters and downconverters
ideal for applications where a common PC board layout
is used for both frequency bands.
Ordering Information
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 Thin QFN-EP*
20 Thin QFN-EP*
The MAX2031 is available in a compact 20-pin thin
QFN package (5mm x 5mm) with an exposed pad.
Electrical performance is guaranteed over the extended
-40°C to +85°C temperature range.
MAX2031ETP+
MAX2031ETP+T
+Denotes a lead(Pb)-free/RoHS-compliant package.
T= Tape and reel.
*EP = Exposed pad.
Applications
WCDMA/LTE and
cdma2000® Base
Stations
GSM 850/GSM 900 2G
and 2.5G EDGE Base
Stations
Predistortion Receivers
Pin Configuration/
Functional Diagram
Microwave and Fixed
Broadband Wireless
Access
Wireless Local Loop
TOP VIEW
20
19
18
17
16
Digital and Spread-
Spectrum
Communication Systems
+
Integrated Digital
Enhanced Network
V
1
15 LO2
CC
(iDEN®) Base Stations
V
CC
2
3
4
5
14
RF
MAX2031
WiMAX(SM) Base Stations
and Customer Premise
Equipment
13 GND
12 GND
11 LO1
TAP
GND
E.P.
6
GND
7
8
9
10
cdma2000is a registered trademark of Telecommunications
Industry Association.
iDENis a registered trademark of Motorola, Inc.
WiMAX is a trademark of WiMAX Forum.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.