參數(shù)資料
型號： RF2498
廠商： RF MICRO DEVICES INC
元件分類： 無繩電話/電話
英文描述： TRI-BAND/QUAD-MODE CDMA/GPS LOW NOISE AMPLIFIER/MIXER
中文描述： TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC32
封裝： 5 X 5 MM, PLASTIC, QFN-32
文件頁數(shù)： 1/20頁
文件大?。?/td> 723K
代理商： RF2498
8-301
Product Description
Ordering Information
Typical Applications
Features
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Optimum Technology Matching Applied
Si BJT
GaAs HBT
Si Bi-CMOS
SiGe HBT
InGaP/HBT
GaN HEMT
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
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
L
/
T
P
P
C
M
E
CELL LNA OUT
LNA GAIN
CELL LNA IN
CELL LNA EMITTER
PCS LNA OUT
IP SET
PCS LNA IN
GPS LNA IN
G
I
B
G
V
I
I
I
RF2498
TRI-BAND/QUAD-MODE CDMA/GPS
LOW NOISE AMPLIFIER/MIXER
CDMA/Cellular/PCS/GPS Handsets
JCDMA/GPS Handsets
CDMA Modem/Data Cards
Commercial and Consumer Systems
Portable Battery-Powered Equipment
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, intermod-
ulation and single-tone requirements. The RF2498 inte-
grates 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 dedi-
cated 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 plas-
tic, 5mmx5mm, leadless chip carrier.
GPS Receive Front-End Gain=37dB
Meets IMD Tests with Three Gain
States/Two Logic Control Lines
Adjustable Mixer and LNA Bias Current
Selectable Divide-by-2 Prescaler
Integrated TX LO Buffer Amplifier
RF2498
Tri-Band/Quad-Mode CDMA/GPS Low Noise Ampli-
fier/Mixer
Fully Assembled Evaluation Board
RF2498 PCBA
0
Rev A3 030711
-C-
SEATING
PLANE
0.05
0.00
0.70
0.65
0.90
0.85
0.05 C
12°
MAX
NOTES:
1. Shaded lead is Pin 1.
Dimension applies to plated terminal:
to be measured between 0.20 mm and 0.25 mm
from terminal end.
2
PIN 1 ID
0.20 R
0.60
0.24
TYP
0.50
0.30
0.50
0.10
C A B
M
0.30
0.18
2
3.25
2 PLCS
0.10 C B
2 PLCS
0.10 C B
-A-
2 PLCS
0.10 C A
2.50 TYP
5.00 SQ.
-B-
2.37 TYP
4.75 SQ.
2 PLCS
0.10 C A
Dimensions in mm.
Package Style: QFN, 32-Pin, 5x5
9
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