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RF2890 Datasheet

  • RF2890

  • DUAL-BAND CDMA CELLULAR/GPS LOW NOISE AMPLIFIER/MIXER

  • 14頁

  • RFMD

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RF2890
0
Typical Applications
鈥?CDMA Cellular/GPS Applications
鈥?JCDMA/GPS Applications
鈥?AMPS/GPS Applications
Product Description
-A-
4.00 SQ
2.00 TYP
DUAL-BAND CDMA CELLULAR/GPS
LOW NOISE AMPLIFIER/MIXER
鈥?CDMA Modem/Data Cards
鈥?Commercial and Consumer Systems
鈥?Portable Battery-Powered Equipment
0.15 C A
2 PLCS
0.15 C B
2 PLCS
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.
Optimum Technology Matching廬 Applied
Si BJT
Si Bi-CMOS
InGaP/HBT
ENABLE
3
2 PLCS
0.15 C B
1.87 TYP
0.15 C A
2 PLCS
0.90
0.85
0.70
0.65
0.05 C
3.75 SQ
Top View
-B-
0.10 M C A B
0.05
0.00
0.60
0.24
TYP
0.30
2
0.18
PIN 1 ID
0.20 R
Dimensions in mm
2.49
SQ.
2.19
12擄
MAX
0.50
0.30
TYP
-C-
NOTES:
1
Shaded lead is pin 1.
2
3
SEATING
PLANE
0.50
Bottom View
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.
Package Style: QFN, 24-Pin, 4x4
GaAs HBT
SiGe HBT
GaN HEMT
DIV SEL
CELL
MIX IN
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
Features
鈥?Optional Divide-by-Two LO Prescaler
allows VCO Flexibility
鈥?Three Gain State Cellular LNA
24
CELL
1
LNA OUT
CELL
2
LNA EMITTER
CELL
3
LNA IN
GPS
4
LNA IN
VG1 5
GPS
6
LNA OUT
7
GPS
MIX IN
23
22
21
20
ISET1
NC
19
18 GPS IF+
ISET2
鈥?High IIP3 (8.5dBm) Cellular Mixer
鈥?Full ESD Protection on all Pins
鈥?15.5mA GPS LNA/Mixer Solution
17 GPS IF-
16 CDMA IF+
/2
15 CDMA IF-
TX BUFF
ENAB
14
Ordering Information
RF2890
RF2890PCBA-410
Dual-Band CDMA Cellular/GPS Low Noise
Amplifier/Mixer
Fully Assembled Evaluation Board
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
13 LO OUT
8
VG2
9
BAND SEL
10
VCC1
11
LO IN
12
VCC2
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Rev A4 040421
8-409

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