1 of 22
Optimum Technology Matching® Applied
GaAs HBT
InGaP HBT
GaAs MESFET
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
Functional Block Diagram
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
Product Description
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Ordering Information
32
1
9
17
2
3
4
5
6
7
8
10
11
12
13
14
15
16
24
23
22
21
20
19
18
31
30
29
28
27
26
25
GPS+
GPS-
CDMA+
CDMA-
FM+
FM-
VCC2
LO IN
CELL LNA OUT
LNA GAIN
CELL LNA IN
CELL LNA EMITTER
PCS LNA OUT
IP SET
PCS LNA IN
GPS LNA IN
RF2498
TRI-BAND/QUAD-MODE CDMA/GPS
LOW NOISE AMPLIFIER/MIXER
The RF2498 is a high performance CDMA tri-band/quad-mode integrated
LNA/mixer with GPS capability. The device is designed to meet all IS-98
sensitivity, intermodulation and single-tone requirements. The RF2498
integrates the tri-band LNA/downconverters with 27.5dB of gain control
for the cellular band and 29dB for the PCS band. The RF2498 is designed
for three state gain control solutions for IS-98 IMD testing. The device
offers a dedicated GPS LNA/mixer with 37dB of gain. Additionally, a
divide-by-2 prescaler to allow the use of either a single- or dual-band VCO
is integrated. There is also a TX LO buffer. The design is flexible, in that the
bias currents may be set using off-chip current reference resistors for the
mixer and LNA blocks. The device is packaged in a plastic, 5mmx5mm,
leadless chip carrier.
Features
GPS Receive Front-End
Gain=37dB
Meets IMD Tests with Three
Gain States/Two Logic Con-
trol Lines
Adjustable Mixer and LNA
Bias Current
Selectable Divide-by-2 Pres-
caler
Integrated TX LO Buffer Ampli-
fier
Applications
CDMA/Cellular/PCS/GPS
Handsets
JCDMA/GPS Handsets
CDMA Modem/Data Cards
Commercial and Consumer
Systems
Portable Battery-Powered
Equipment
RF2498
Tri-Band/Quad-Mode CDMA/GPS Low Noise Amplifier/Mixer
RF2498PCBA-41X
Fully Assembled Evaluation Board
Rev A3 DS030711
RF2498Tri-
Band/Quad-
Mode
CDMA/GPS
Low Noise
Ampli-
fier/Mixer
Package Style: QFN, 32-Pin, 5x5
Japanese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
