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RF2492 Datasheet

  • RF2492

  • DUAL-BAND LOW NOISE AMPLIFIER/MIXER

  • 22頁

  • RFMD

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Preliminary
8
Typical Applications
鈥?TDMA-GSM Cellular/PCS Handsets
鈥?TDMA Cellular/PCS Handsets
鈥?GAIT Handsets
RF2492
DUAL-BAND LOW NOISE AMPLIFIER/MIXER
鈥?CDMA Cellular/PCS Handsets
鈥?GSM DCS/PCS Handsets
Product Description
The RF2492 is a fully featured dual-band LNA/Mixer and
is usable in a variety of mobile handset applications. The
unique dual IF outputs provide interface to two indepen-
dent IF SAW filters supporting applications such as
TDMA-EDGE where 30kHz and 200kHz bandwidth SAW
filters are used. With independent power management
control pins for the LNAs and mixers, either IF output can
be accessed from either high- or low-band LNAs, provid-
ing maximum flexibility with minimum power usage. Multi-
ple gain control options are provided to achieve a very
large dynamic range for the receiver. A frequency doubler
is included in the LO circuit to generate both high- and
low-band LO signals with a single VCO. The RF2492 is
packaged in a 32 pin, 5mmx5mm, leadless plastic pack-
age.
Optimum Technology Matching廬 Applied
Si BJT
Si Bi-CMOS
GaAs HBT
GaAs MESFET
Si CMOS
1.00
0.85
0.80
0.65
0.60
0.24 typ
5.00
sq.
0.45
0.20
4 PLCS
3
0.30
0.18
3.25
2.95 sq.
12擄
MAX
0.05
0.01
0.55
0.30
0.50
NOTES:
1 Shaded Pin is Lead 1.
0.23
0.13
4 PLCS
8
FRONT-ENDS
2 Pin 1 identifier must exist on top surface of package by identification
mark or feature on the package body. Exact shape and size is optional.
3 Dimension applies to plated terminal: to be measured between 0.02 mm
and 0.25 mm from terminal end.
4 Package Warpage: 0.05 mm max.
5 Die Thickness Allowable: 0.305 mm max.
Package Style: LCC, 32-Pin, 5x5
PCS LNA OUT
眉
SiGe HBT
PCS MIX IN
25
23
Features
鈥?Complete Dual-Band Receiver Front End
鈥?Low Noise Figure
4
5
PCS LNA IN 30
7
LNA GAIN SEL 12
MIX GAIN SEL 14
8
IF1+
IF1-
IF2-
IF2+
鈥?Stepped LNA/Mixer Gain Control
鈥?Adjustable LNA Bias Current/IIP3
鈥?Integrated LO Frequency Doubler
鈥?Differential LO Buffer Outputs
CELL LNA IN 11
IF SEL 9
LNA IP SEL 10
LNA ISET 17
BAND SEL 31
X2 ENABLE 32
15 18
1
LOGIC
CONTROL
X2
19 PCS LO OUT+
20 PCS LO OUT -
21 CELL LO OUT+
22 CELL LO OUT-
Ordering Information
RF2492
RF2492 PCBA
Dual-Band Low Noise Amplifier/Mixer
Fully Assembled Evaluation Board
CELL LNA OUT
CELL MIX IN
LO IN
Functional Block Diagram
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Rev A4 010828
8-33

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