MAX19994A Datasheet, PDF (1/28 Pages) Maxim Integrated Products – Dual, SiGe, High-Linearity, 1200MHz to 2000MHz Downconversion Mixer with LO Buffer/Switch

19-5197; Rev 0; 4/10
Dual, SiGe, High-Linearity, 1200MHz to 2000MHz
Downconversion Mixer with LO Buffer/Switch
General Description
The MAX19994A dual-channel downconverter is
designed to provide 8.4dB of conversion gain, +25dBm
input IP3, +14dBm 1dB input compression point, and a
noise figure of 9.8dB for 1200MHz to 2000MHz diversity
receiver applications. With an optimized LO frequency
range of 1450MHz to 2050MHz, this mixer supports both
high- and low-side LO injection architectures for the
1200MHz to 1700MHz and 1700MHz to 2000MHz RF
bands, respectively.
In addition to offering excellent linearity and noise perfor-
mance, the device also yields a high level of component
integration. This device includes two double-balanced
passive mixer cores, two LO buffers, a dual-input LO
selectable switch, and a pair of differential IF output
amplifiers. Integrated on-chip baluns allow for single-
ended RF and LO inputs. The MAX19994A requires a
nominal LO drive of 0dBm and a typical supply current of
330mA at VCC = 5.0V, or 264mA at VCC = 3.3V.
The MAX19994A is pin compatible with the MAX9985/
MAX9995/MAX19985A/MAX19993/MAX19995/
MAX19995A series of 700MHz to 2500MHz mixers
and pin similar with the MAX19997A/MAX19999 series
of 1850MHz to 4000MHz mixers, making this entire
family of downconverters ideal for applications where a
common PCB layout is used across multiple frequency
bands.
The device is available in a 6mm x 6mm, 36-pin thin QFN
package with an exposed pad. Electrical performance is
guaranteed over the extended temperature range, from
TC = -40NC to +85NC.
Applications
WCDMA/LTE Base Stations
TD-SCDMA Base Stations
GSM/EDGE Base Stations
cdma2000^M Base Stations
Wireless Local Loop
Fixed Broadband Wireless Access
Private Mobile Radios
Military Systems
Features
S 1200MHz to 2000MHz RF Frequency Range
S 1450MHz to 2050MHz LO Frequency Range
S 50MHz to 500MHz IF Frequency Range
S 8.4dB Typical Conversion Gain
S 9.8dB Typical Noise Figure
S +25dBm Typical Input IP3
S +14dBm Typical Input 1dB Compression Point
S 68dBc Typical 2LO - 2RF Spurious Rejection at
PRF = -10dBm
S Dual Channels Ideal for Diversity Receiver
Applications
S 47dB Typical Channel-to-Channel Isolation
S Low -6dBm to +3dBm LO Drive
S Integrated LO Buffer
S Internal RF and LO Baluns for Single-Ended
Inputs
S Built-In SPDT LO Switch with 48dB LO-to-LO
Isolation and 50ns Switching Time
S Pin Compatible with the MAX9985/MAX9995/
MAX19985A/MAX19993/MAX19995/MAX19995A
Series of 700MHz to 2200MHz Mixers
S Pin Similar to the MAX19997A/MAX19999 Series
of 1850MHz to 4000MHz 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
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX19994AETX+ -40NC to +85NC 36 Thin QFN-EP*
MAX19994AETX+T -40NC to +85NC 36 Thin QFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
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