MAX19997A Datasheet, PDF (1/34 Pages) Maxim Integrated Products – Dual, SiGe High-Linearity, 1800MHz to 2900MHz Downconversion Mixer with LO Buffer

19-4288; Rev 0; 10/08
Dual, SiGe High-Linearity, 1800MHz to 2900MHz
Downconversion Mixer with LO Buffer
General Description
The MAX19997A dual downconversion mixer is a versa-
tile, highly integrated diversity downconverter that pro-
vides high linearity and low noise figure for a multitude of
1800MHz to 2900MHz base-station applications. The
MAX19997A fully supports both low- and high-side LO
injection architectures for the 2300MHz to 2900MHz
WiMAX™, LTE, WCS, and MMDS bands, providing
8.7dB gain, +24dBm input IP3, and 10.3dB NF in the
low-side configuration, and 8.7dB gain, +24dBm input
IP3, and 10.4dB NF in the high-side configuration. High-
side LO injection architectures can be further extended
down to 1800MHz with the addition of one tuning ele-
ment (a shunt inductor) on each RF port.
The device integrates baluns in the RF and LO ports,
an LO buffer, two double-balanced mixers, and a pair
of differential IF output amplifiers. The MAX19997A
requires a typical LO drive of 0dBm and a supply cur-
rent guaranteed below 420mA to achieve the targeted
linearity performance.
The MAX19997A is available in a compact 6mm x 6mm,
36-pin thin QFN lead-free package with an exposed
pad. Electrical performance is guaranteed over the
extended temperature range, from T_C = -40°C to +85°C.
Applications
2.3GHz WCS Base Stations
2.5GHz WiMAX and LTE Base Stations
2.7GHz MMDS Base Stations
UMTS/WCDMA and cdma2000^® 3G Base
Stations
PCS1900 and EDGE Base Stations
PHS/PAS Base Stations
Fixed Broadband Wireless Access
Wireless Local Loop
Private Mobile Radios
Military Systems
Features
o 1800MHz to 2900MHz RF Frequency Range
o 1950MHz to 3400MHz LO Frequency Range
o 50MHz to 500MHz IF Frequency Range
o Supports Both Low-Side and High-Side LO
Injection
o 8.7dB Conversion Gain
o +24dBm Input IP3
o 10.3dB Noise Figure
o +11.3dBm Input 1dB Compression Point
o 70dBc Typical 2 x 2 Spurious Rejection at
P_RF = -10dBm
o Dual Channels Ideal for Diversity Receiver
Applications
o Integrated LO Buffer
o Integrated LO and RF Baluns for Single-Ended
Inputs
o Low -3dBm to +3dBm LO Drive
o Pin Compatible with the MAX19999 3000MHz to
4000MHz Mixer
o Pin Similar to the MAX9995/MAX9995A and
MAX19995/MAX19995A 1700MHz to 2200MHz
Mixers and the MAX9985/MAX9985A and
MAX19985/MAX19985A 700MHz to 1000MHz
Mixers
o 42dB 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-
Performance Mode
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX19997AETX+
-40°C to +85°C 36 Thin QFN-EP*
MAX19997AETX+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.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
Pin Configuration/Functional Block Diagram appears at
end of data sheet.
________________________________________________________________ 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.