19-3435; Rev 0; 10/04
SiGe High-Linearity, 1700MHz to 2200MHz
Downconversion Mixer with LO Buffer/Switch
General Description
Features
The MAX9994 high-linearity downconversion mixer pro-
vides 8.3dB gain, +26.2dBm IIP3, and 9.7dB NF for
1700MHz to 2200MHz UMTS/WCDMA, DCS, and PCS
base-station receiver applications. With a 1400MHz to
2000MHz LO frequency range, this particular mixer is
ideal for low-side LO injection receiver architectures.
High-side LO injection is supported by the MAX9996*,
which is pin-for-pin and functionally compatible with the
MAX9994.
ꢀ 1700MHz to 2200MHz RF Frequency Range
ꢀ 1400MHz to 2000MHz LO Frequency Range
(MAX9994)
ꢀ 1900MHz to 2400MHz LO Frequency Range
(MAX9996)
ꢀ 40MHz to 350MHz IF Frequency Range
ꢀ 8.3dB Conversion Gain
ꢀ +26.2dBm Input IP3
In addition to offering excellent linearity and noise per-
formance, the MAX9994 also yields a high level of com-
ponent 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 MAX9994 requires a nominal LO
drive of 0dBm, and supply current is guaranteed to be
below 235mA.
ꢀ +12.6dBm Input 1dB Compression Point
ꢀ 9.7dB Noise Figure
ꢀ 67dBc 2RF - 2LO Spurious Rejection at
P
= -10dBm
RF
ꢀ Integrated LO Buffer
ꢀ Integrated RF and LO Baluns for Single-Ended
Inputs
ꢀ Low -3dBm to +3dBm LO Drive
ꢀ Built-In SPDT LO Switch with 45dB LO1 to LO2
Isolation and 50ns Switching Time
ꢀ Pin Compatible with MAX9984/MAX9986 815MHz
to 995MHz Mixers
ꢀ Functionally Compatible with MAX9993
ꢀ External Current-Setting Resistors Provide Option
for Operating Mixer in Reduced Power/Reduced
Performance Mode
The MAX9994/MAX9996 are pin compatible with the
MAX9984/MAX9986 815MHz to 995MHz mixers, mak-
ing this entire family of downconverters ideal for appli-
cations where a common PC board layout is used for
both frequency bands. The MAX9994 is also functional-
ly compatible with the MAX9993.
The MAX9994 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.
ꢀ Lead-Free Package Available
Ordering Information
Applications
PKG
UMTS/WCDMA Base Stations
PART
TEMP RANGE PIN-PACKAGE
CODE
DCS1800/PCS1900 EDGE Base Stations
20 Thin QFN-EP**
-40°C to +85°C 5mm × 5mm
bulk
cdmaOne™ and cdma2000® Base Stations
PHS/PAS Base Stations
Predistortion Receivers
Fixed Broadband Wireless Access
Wireless Local Loop
MAX9994ETP
T2055-3
20 Thin QFN-EP**
-40°C to +85°C 5mm × 5mm
T/R
MAX9994ETP-T
T2055-3
T2055-3
T2055-3
20 Thin QFN-EP**
5mm × 5mm
lead-free bulk
Private Mobile Radios
MAX9994ETP+D -40°C to +85°C
Military Systems
Microwave Links
20 Thin QFN-EP**
MAX9994ETP+TD -40°C to +85°C 5mm × 5mm
Digital and Spread-Spectrum Communication
Systems
lead-free T/R
**EP = Exposed paddle.
+ = Lead free. D = Dry pack.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
cdmaOne is a trademark of CDMA Development Group.
*Future product—contact factory for availability.
Pin Configuration/Functional Diagram and Typical
Application Circuit appear at end of data sheet.
________________________________________________________________ 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.
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