19-4293; Rev 0; 10/08
Dual, SiGe High-Linearity, 3000MHz to
4000MHz Downconversion Mixer with LO Buffer
The MAX19999 dual-channel downconverter provides
8.3dB of conversion gain, +24dBm input IP3, +11.4dBm
1dB input compression point, and a noise figure of
10.5dB for 3000MHz to 4000MHz WiMAX™ and LTE
diversity receiver applications. With an optimized LO fre-
quency range of 2650MHz to 3700MHz, this mixer is
ideal for low-side LO injection architectures.
In addition to offering excellent linearity and noise per-
formance, the MAX19999 also yields a high level of
component integration. This device includes two dou-
ble-balanced passive mixer cores, two LO buffers, and
a pair of differential IF output amplifiers. Integrated on-
chip baluns allow for single-ended RF and LO inputs.
The MAX19999 requires a nominal LO drive of 0dBm
and a typical supply current of 388mA at VCC = +5.0V
or 279mA at VCC = +3.3V.
The MAX19999 is pin compatible with the MAX19997A
1800MHz to 2900MHz mixer and pin similar with the
MAX19985/MAX19985A and MAX19995/MAX19995A
series of 700MHz to 2200MHz mixers, making this
entire family of downconverters ideal for applications
where a common PCB layout is used across multiple
The MAX19999 is available in a compact 6mm x 6mm,
36-pin thin QFN package with an exposed pad.
Electrical performance is guaranteed over the extended
temperature range, from TC = -40°C to +85°C.
3.5GHz WiMAX and LTE Base Stations
Fixed Broadband Wireless Access
Wireless Local Loop
Private Mobile Radios
Pin Configuration/Functional Diagram and Typical
Application Circuit appear at end of data sheet.
o 3000MHz to 4000MHz RF Frequency Range
o 2650MHz to 3700MHz LO Frequency Range
o 50MHz to 500MHz IF Frequency Range
o 8.3dB Conversion Gain
o +24dBm Input IP3
o 10.5dB Noise Figure
o +11.4dBm Input 1dB Compression Point
o 74dBc Typical 2 x 2 Spurious Rejection at
PRF = -10dBm
o Dual Channels Ideal for Diversity Receiver
o Integrated LO Buffer
o Integrated LO and RF Baluns for Single-Ended
o Low -3dBm to +3dBm LO Drive
o Pin Compatible with the MAX19997A 1800MHz to
o Pin Similar to the MAX9995/MAX9995A and
MAX19995/MAX19995A 1700MHz to 2200MHz
Mixers and the MAX9985/MAX9985A and
MAX19985/MAX19985A 700MHz to 1000MHz
o 39dB Channel-to-Channel Isolation
o Single +5.0V or +3.3V Supply
o External Current-Setting Resistors Provide Option
for Operating Device in Reduced-Power/Reduced-
TEMP RANGE PIN-PACKAGE
-40°C to +85°C 36 Thin QFN-EP*
MAX19999ETX+T -40°C to +85°C 36 Thin QFN-EP*
+Denotes a lead-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
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.