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RF2870PCBA Datasheet

  • RF2870PCBA

  • CDMA LOW NOISE AMPLIFIER/MIXER 900MHz DOWNCONVERTER

  • 400.85KB

  • 14頁

  • RFMD

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RF2870
0
Typical Applications
鈥?CDMA Cellular Systems
鈥?JCDMA Cellular Systems
鈥?AMPS Cellular Systems
Product Description
-A-
CDMA LOW NOISE AMPLIFIER/MIXER
900MHz DOWNCONVERTER
鈥?General Purpose Downconverter
鈥?Commercial and Consumer Systems
鈥?Portable Battery-Powered Equipment
0.10 C A
0.05 C
3.00
2 PLCS
The RF2870 is a receiver front-end for CDMA cellular
applications. It is designed to amplify and downconvert
RF signals, while providing 28.5dB of stepped gain con-
trol range. Features include digital control of LNA gain,
mixer gain, and power down mode. Another feature of the
chip is adjustable IIP3 of the mixer using an off-chip cur-
rent setting resistor. Noise figure, IP3, and other specs
are designed to be compatible with the IS-98B interim
standard for CDMA cellular communications. The IC is
manufactured on an advanced Silicon Germanium Bi-
CMOS process and is assembled in a 3mmx3mm, 16-
pin, QFN package.
1.50 TYP
2 PLCS
0.90
0.85
0.70
0.65
0.10 C B
0.05
0.00
3.00
12擄
MAX
2 PLCS
0.10 C B
-B-
1.37 TYP
2 PLCS
-C-
Dimensions in mm.
SEATING
PLANE
2.75 SQ
0.60
0.24
TYP
0.10 C A
0.10 M C A B
0.30
0.18
2
NOTES:
1. Shaded lead is pin 1.
2
Dimension applies to plated terminal: to be measured
between 0.20 mm and 0.25 mm from terminal end.
PIN 1 ID
R.20
1.65
SQ.
1.35
0.50
0.30
0.50
Optimum Technology Matching廬 Applied
Si BJT
Si Bi-CMOS
InGaP/HBT
GaAs HBT
SiGe HBT
GaN HEMT
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
Package Style: QFN, 16-Pin, 3x3
Features
鈥?3mmx3mm LNA/Mixer Solution
鈥?Adjustable Mixer Current/IIP3
MIX GAIN
MIX IN
ISET1
ISET2
鈥?Meets IMD Tests with Three Gain
States/Two Logic Control Lines
12 LNA OUT
11 LNA EMITTER
10 LNA IN
9 LNA GAIN
16
IF OUT+ 1
IF OUT- 2
GND 3
LO IN 4
5
VCC
15
14
13
鈥?Integrated TX LO Buffer Amplifier
鈥?All Pins ESD Protected
Ordering Information
RF2870
RF2870 PCBA
CDMA Low Noise Amplifier/Mixer 900MHz Downcon-
verter
Fully Assembled Evaluation Board
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
6
LO OUT
7
TX BUFF
ENABLE
8
ENABLE
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Rev A8 030507
8-1

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