8-409
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 MESFET
GaAs HBT
Si Bi-CMOS
SiGe HBT
Si CMOS
InGaP/HBT
GaN HEMT
SiGe Bi-CMOS
CELL
LNA IN
CELL
LNA EMITTER
CELL
LNA OUT
GPS
LNA IN
VG1
GPS
LNA OUT
LO OUT
TX BUFF
ENAB
CDMA IF-
CDMA IF+
GPS IF-
GPS IF+
1
3
2
6
24
23
22
21
20
19
4
5
12
18
15
17
16
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13
10
9
7
8
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RF2890
DUAL-BAND CDMA CELLULAR/GPS
LOW NOISE AMPLIFIER/MIXER
• CDMA Cellular/GPS Applications
• JCDMA/GPS Applications
• AMPS/GPS Applications
• CDMA Modem/Data Cards
• Commercial and Consumer Systems
• Portable Battery-Powered Equipment
The RF2890 is a high performance dual band CDMA Cel-
lular and GPS LNA/mixer. An integrated optional LO pres-
caler allows VCO flexibility. The device is designed to
exceed all sensitivity, intermodulation and single-tone
requirements. The RF2890 is designed for three state
gain control solutions (17.5dB of gain control) for cellular
band IMD testing. The device offers a dedicated low cur-
rent (15.5mA) GPS LNA/mixer with 32.5dB gain. An inte-
grated TX LO buffer is also included. The design is
flexible, in that the bias currents may be set using off-chip
current reference resistors for the mixer and LNA blocks.
Noise figure, IIP3, and other specifications are designed
to be compatible with the TIA/EIA 98D standard for
CDMA cellular communications. The device is packaged
in a plastic, 4mmx4mm QFN.
• Optional Divide-by-Two LO Prescaler
allows VCO Flexibility
• Three Gain State Cellular LNA
• High IIP3 (8.5dBm) Cellular Mixer
• Full ESD Protection on all Pins
• 15.5mA GPS LNA/Mixer Solution
RF2890
Dual-Band CDMA Cellular/GPS Low Noise
Amplifier/Mixer
RF2890PCBA-410
Fully Assembled Evaluation Board
0
Rev A4 040421
Dimensions in mm
0.05 C
SEATING
PLANE
12°
MAX
-C-
0.05
0.00
0.70
0.65
0.90
0.85
Top View
-A-
3
1.87 TYP
3.75 SQ
0.15 C A
2 PLCS
-B-
4.00 SQ
2.00 TYP
0.15 C B
2 PLCS
0.15 C A
2 PLCS
0.15 C B
2 PLCS
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.
Pin 1 identifier must exist on top surface of package by identification mark or feature on the package body.
2
3
0.50
0.30
TYP
PIN 1 ID
0.20 R
0.60
0.24
TYP
C
0.10 M
A B
2
0.30
0.18
0.50
Bottom View
2.49
2.19
SQ.
Package Style: QFN, 24-Pin, 4x4
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