Rainbow Electronics MAX19998 - Manual

_______________________________________________________________ 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.
SiGe, High-Linearity, 2300MHz to 4000MHz
Downconversion Mixer with LO Buffer MAX19998
19-4827; Rev 0; 10/09
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
General Description
The MAX19998 single, high-linearity downconversion
mixer provides 8.7dB of conversion gain, +24.3dBm
input IP3, +11.3dBm 1dB input compression point,
and a noise figure of 9.7dB for 2300MHz to 4000MHz
WiMAXK, LTE, and MMDS receiver applications. With
an ultra-wide LO 2600MHz to 4300MHz frequency
range, the MAX19998 can be used in either low-side
or high-side LO injection architectures for virtually all
2.5GHz and 3.5GHz applications. For a 2.5GHz vari-
ant tuned specifically for high-side injection, refer to the
MAX19996A.
In addition to offering excellent linearity and noise per-
formance, the MAX19998 also yields a high level of
component integration. This device includes a double-
balanced passive mixer core, an IF amplifier, and an LO
buffer. On-chip baluns are also integrated to allow for
single-ended RF and LO inputs. The MAX19998 requires
a nominal LO drive of 0dBm, and supply current is typi-
cally 230mA at V
CC = 5.0V or 150mA at V CC = 3.3V.
The MAX19998 is pin compatible with the MAX19996/
MAX19996A 2000MHz to 3900MHz mixer family. The
device is also pin similar with the MAX9984/MAX9986/
MAX9986A 400MHz to 1000MHz mixers and the
MAX9993/MAX9994/MAX9996 1700MHz to 2200MHz
mixers, making this entire family of downconverters ideal
for applications where a common PCB layout is used for
multiple frequency bands.
The MAX19998 is available in a compact, 5mm x 5mm,
20-pin thin QFN with an exposed pad. Electrical perfor-
mance is guaranteed over the extended -40NC to +85NC
temperature range.
Applications
2.5GHz WiMAX and LTE Base Stations
2.7GHz MMDS Base Stations
3.5GHz WiMAX and LTE Base Stations
Fixed Broadband Wireless Access
Wireless Local Loop
Private Mobile Radios
Military Systems
Features
S 2300MHz to 4000MHz RF Frequency Range
S
2600MHz to 4300MHz LO Frequency Range
S 50MHz to 500MHz IF Frequency Range
S 8.7dB Conversion Gain
S 9.7dB Noise Figure
S +24.3dBm Typical Input IP3
S +11.3dBm Typical Input 1dB Compression Point
S 67dBc Typical 2RF - 2LO Spurious Rejection at
P
RF = -10dBm
S Integrated LO Buffer
S Integrated RF and LO Baluns for Single-Ended
Inputs
S Low -3dBm to +3dBm LO Drive
S Pin Compatible with the MAX19996/MAX19996A
2000MHz to 3900MHz Mixers
S Pin Similar with the MAX9984/MAX9986/
MAX9986A Series of 400MHz to 1000MHz Mixers
and the MAX9993/MAX9994/MAX9996 Series of
1700MHz to 2200MHz Mixers
S
Single 5.0V or 3.3V Supply
S External Current-Setting Resistors Provide Option
for Operating Device in Reduced-Power/Reduced-
Performance Mode
WiMAX is a trademark of WiMAX Forum.
Ordering Information
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX19998ETP+ -40NC to +85NC 20 Thin QFN-EP*
MAX19998ETP+T -40NC to +85NC 20 Thin QFN-EP*