MAX9984 Datasheet, PDF (1/15 Pages) Maxim Integrated Products – SiGe High-Linearity, 400MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch

19-3648; Rev 0; 4/05
EVAALVUAAILTAIOBNLEKIT
SiGe High-Linearity, 400MHz to 1000MHz
Downconversion Mixer with LO Buffer/Switch
General Description
The MAX9984 high-linearity downconversion mixer pro-
vides 8.1dB gain, +25dBm IIP3, and 9.3dB NF for
400MHz to 1000MHz base-station receiver applica-
tions*. With an optimized 570MHz to 850MHz LO fre-
quency range, this particular mixer is ideal for low-side
LO injection receiver architectures in the cellular band.
High-side LO injection is supported by the MAX9986,
which is pin-for-pin and functionally compatible with the
MAX9984.
In addition to offering excellent linearity and noise perfor-
mance, the MAX9984 also yields a high level of compo-
nent integration. This device includes a double-balanced
passive mixer core, an IF amplifier, a dual-input LO selec-
table switch, and an LO buffer. On-chip baluns are also
integrated to allow for single-ended RF and LO inputs.
The MAX9984 requires a nominal LO drive of 0dBm, and
supply current is guaranteed to be below 265mA.
The MAX9984/MAX9986 are pin compatible with the
MAX9994/MAX9996 1700MHz to 2200MHz mixers,
making this entire family of downconverters ideal for
applications where a common PC board layout is used
for both frequency bands. The MAX9984 is also func-
tionally compatible with the MAX9993.
The MAX9984 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.
Applications
Features
♦ 400MHz to 1000MHz RF Frequency Range*
♦ 325MHz to 850MHz LO Frequency Range*
(MAX9984)
♦ 960MHz to 1180MHz LO Frequency Range
(MAX9986)
♦ 50MHz to 250MHz IF Frequency Range
♦ 8.1dB Conversion Gain
♦ +25dBm Input IP3
♦ +13dBm Input 1dB Compression Point
♦ 9.3dB Noise Figure
♦ 71dBc 2RF-2LO Spurious Rejection at
P_RF = -10dBm
♦ Integrated LO Buffer
♦ Integrated RF and LO Baluns for Single-Ended
Inputs
♦ Low -3dBm to +3dBm LO Drive
♦ Built-In SPDT LO Switch with 54dB LO1 to LO2
Isolation and 50ns Switching Time
♦ Pin Compatible with MAX9994/MAX9996 1700MHz
to 2200MHz Mixers
♦ Functionally Compatible with MAX9993
♦ External Current-Setting Resistors Provide Option
for Operating Mixer in Reduced Power/Reduced
Performance Mode
♦ Lead-Free Package Available
850MHz W-CDMA Base Stations
GSM 850/GSM 900 2G and 2.5G EDGE Base Stations
cdmaOne™ and cdma2000^® Base Stations
PART
Ordering Information
TEMP RANGE PIN-PACKAGE
PKG
CODE
iDEN^® Base Stations
400MHz to 700MHz OFDM/WiMAX CPE and
Base-Station Equipment
Predistortion Receivers
Fixed Broadband Wireless Access
Wireless Local Loop
Private Mobile Radios
Military Systems
Microwave Links
Digital and Spread-Spectrum Communication Systems
cdma2000 is a registered trademark of the Telecommunications
Industry Association.
cdmaOne is a trademark of CDMA Development Group.
iDEN is a registered trademark of Motorola, Inc.
MAX9984ETP
-40°C to +85°C
20 Thin QFN-EP**
5mm × 5mm
T2055-3
MAX9984ETP-T
-40°C to +85°C
20 Thin QFN-EP**
5mm × 5mm
T2055-3
MAX9984ETP+D
-40°C to +85°C
20 Thin QFN-EP**
5mm × 5mm
T2055-3
MAX9984ETP+TD -40°C to +85°C
20 Thin QFN-EP**
5mm × 5mm
T2055-3
*For an RF frequency range below 815MHz (LO frequency below
570MHz), appropriate tuning is required. See Table 2 for details.
**EP = Exposed paddle.
+ = Lead free. D = Dry pack. T = Tape-and-reel.
Pin Configuration/Functional Diagram and Typical
Application Circuit appear at end of data sheet.
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