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Preliminary
Product Description
Ordering Information
Typical Applications
Features
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
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
SiGe HBT
Si CMOS
19
20
21
22
23
1
5
4
3
2
6
9
8
7
11
10
15
14
13
12
24
16
17
18
Low
LNA GND
GAIN SEL
Low
LNA IN
High
LNA IN
High
LNA GND
High
LNA VCC
BAND SEL
MXR VCC
IF1+
IF1-
IF2+
IF2-
RF2488
MULTI-MODE DUAL-BAND LNA MIXER
• TDMA/EDGE Handsets
• TDMA IS-136 Handsets
• GAIT Handsets
• TDMA/GSM Dual-Band Handsets
• GSM/DCS/EDGE Handsets
The RF2488 is a dual-band LNA/Mixer designed to sup-
port dual-band, multi-mode handset applications. The
unique dual IF outputs provide interface to two indepen-
dent IF SAW filters supporting applications that combine
IS136 with GSM, DCS or EDGE air interfaces. The device
includes four mixers, providing the ability to use two inde-
pendent IF bandwidths accessible from either the low or
high band LNAs. Each LNA has a gain bypass mode con-
trolled by the GAIN SEL pin. An image reject filter is
required between each LNA and its mixer. Power man-
agement is implemented based on a three-pin logic level
interface. Power consumption is minimized by shutting
down all but the active sections of the device.
• Complete Dual-Band Front-End
• Switchable LNA Gain
• Low Noise and High Intercept Point
• Low Current Consumption
• Single 2.7V to 3.3V Power Supply
• Supports Dual IF Bandwidths
RF2488
Multi-Mode Dual-Band LNA Mixer
RF2488 PCBA
Fully Assembled Evaluation Board
8
Rev A0 010905
NOTES:
Shaded Pin is Lead 1.
1
Package Warpage: 0.05 mm max.
4
Die Thickness Allowable: 0.305 mm max.
5
2
Dimension applies to plated terminal: to be measured between 0.02 mm
and 0.25 mm from terminal end.
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
12°
max
1.00
0.85
.80
.65
.05
.01
.23
.13
4 PLCS
4.00
sq.
.60
.24
typ
.50
.40
.28
2
.55
.30
.45
.20
4 PLCS
2.25
1.95
sq.
Package Style: LCC, 24-Pin, 4x4
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