RF2498Tri-
Band/Quad-
Mode
CDMA/GPS
Low Noise
Ampli-
fier/Mixer
RF2498
TRI-BAND/QUAD-MODE CDMA/GPS
LOW NOISE AMPLIFIER/MIXER
Package Style: QFN, 32-Pin, 5x5
GPS MIX IN
32
31
30
29
28
27
26
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
GPS+ 1
GPS LNA OUT
25
24 GPS LNA IN
23 PCS LNA IN
22 IP SET
21 PCS LNA OUT
20 CELL LNA IN
19 CELL LNA EMITTER
18 CELL LNA OUT
17 LNA GAIN
16
ENABLE
BAND SEL
GPS- 2
CDMA+ 3
CDMA- 4
FM+ 5
VCC2 7
LO IN 8
9
LO OUT
10
/2 SELECT
11
TX BUFF ENABLE
12
PCS RFA VCC
13
PCS MIX IN
14
CELL MIX IN
15
MIX GAIN
Applications
CDMA/Cellular/PCS/GPS
Handsets
JCDMA/GPS Handsets
CDMA Modem/Data Cards
Commercial and Consumer
Systems
Portable Battery-Powered
Equipment
Functional Block Diagram
Product Description
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.
Ordering Information
RF2498
RF2498PCBA-41X
Tri-Band/Quad-Mode CDMA/GPS Low Noise Amplifier/Mixer
Fully Assembled Evaluation Board
Optimum Technology Matching廬 Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MICRO DEVICES廬, RFMD廬, Optimum Technology Matching廬, Enabling Wireless Connectivity鈩? PowerStar廬, POLARIS鈩?TOTAL RADIO鈩?and UltimateBlue鈩?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. 漏2006, RF Micro Devices, Inc.
Rev A3 DS030711
7628 Thorndike Road, Greensboro, NC 27409-9421 路 For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
/2
FM- 6
IF SEL
ISET3
ISET2
ISET1
VCC1
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