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RF Micro Devices - QUADRATURE MODULATOR AND PA DRIVER

Numéro de référence RF2705G
Description QUADRATURE MODULATOR AND PA DRIVER
Fabricant RF Micro Devices 
Logo RF Micro Devices 





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RF2705G fiche technique
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RF2705G
0 LOW NOISE, MULTI-MODE, QUAD-BAND,
QUADRATURE MODULATOR AND PA DRIVER
RoHS Compliant & Pb-Free Product
Typical Applications
• EDGE/GSM (GSM850/900) Handsets
• W-CDMA/GSM/EDGE Multimode Handsets
• EDGE/GSM (DCS/PCS) Handsets
• W-CDMA Handsets/Data Cards
and Data Cards
Product Description
The RF2705 is a low noise, multi-mode, quad-band direct
I/Q to RF modulator and PA driver designed for handset
applications where multiple modes of operation are
required. Frequency doublers, dividers and LO buffers
are included to support a variety of LO generation
options. Dynamic power control is supported through a
single analog input giving 90dB of power control range for
the W-CDMA mode and 40dB of power control in the
other two modes. Three sets of RF outputs are provided:
high band and low band low noise EDGE/GMSK outputs,
as well as one wideband W-CDMA output. The device is
designed for 2.7V to 3.3V operation, and is assembled in
a plastic, 24-pin, 4mmx4mm QFN.
Optimum Technology Matching® Applied
Si BJT
GaAs HBT
GaAs MESFET
Si Bi-CMOS
InGaP/HBT
SiGe HBT
Si CMOS
9GaN HEMT
SiGe Bi-CMOS
24 23 22
VCC2 1
LO HB P 2
Note: The die flag is the
chip's main ground.
LO HB N 3
DIV +45°
2 -45°
LO LB P 4
Flo +45°
x2 -45°
LO LB N 5
Mode Control
and Biasing
MODE C 6
789
21 20 19
18
RF OUT
WB P
17
RF OUT
WB N
16
RF OUT
HB P
Σ
15
RF OUT
HB N
Power
Control
14
RF OUT
LB P
13
RF OUT
LB N
10 11 12
Functional Block Diagram
0.10 C
4.0
-A-
-B-
1.00
0.80
4.0
0.10 C B
2 PL
0.10 C A
2 PL
0.50 TYP
0.10 C A B
2.60
2.40
2
PL
0.2 C
Shaded area indicates pin 1.
Dimensions in mm.
-C-
00..5355TYP
SEATING
PLANE
Scale: None
0.10 C
0.203
TYP
0.08 C
0.05
0.00
TYP
0.30
0.18
TYP
0.10 M C A B
TYP00..0083
00..5300TYP
Package Style: QFN, 24-Pin, 4x4
Features
• W-CDMA High/Mid/Low Power Modes
• Quad-Band Direct Quadrature Modulator
• Variable Gain PA Drivers
• GMSK Bypass Amplifiers
• LO Frequency Doubler and Divider
• Baseband Filtering
Ordering Information
RF2705G
Low Noise, Multi-Mode, Quad-Band, Quadrature
Modulator and PA Driver
RF2705GPCBA-41XFully Assembled Evaluation Board
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Rev A0 060206
5-113

PagesPages 24
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