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參數資料
| 型號： | RF2705PCBA-41X |
| 廠商： | RF Micro Devices, Inc. |
| 英文描述： | 887664400 |
| 中文描述： | 低噪聲，多模，四頻，正交調制器及PA驅動器 |
| 文件頁數： | 1/24頁 |
| 文件大小： | 379K |
| 代理商： | RF2705PCBA-41X |
5-113
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 HBT
Si Bi-CMOS
SiGe HBT
InGaP/HBT
GaN HEMT
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
VCC2
LO HB P
LO HB N
LO LB P
LO LB N
MODE C
Q
M
Q
V
G
G
RF OUT
LB N
G
19
M
20
V
21
I
22
I
23
M
24
7
6
5
4
3
2
1
12
11
10
9
8
18
17
16
15
14
13
Note: The die flag is the
chip's main ground.
+45°
-45°
Σ
DIV
2
+45°
-45°
Flo
x2
Mode Control
and Biasing
Power
Control
RF OUT
LB P
RF OUT
HB N
RF OUT
HB P
RF OUT
WB N
RF OUT
WB P
RF2705
LOW NOISE, MULTI-MODE, QUAD-BAND,
QUADRATURE MODULATOR AND PA DRIVER
EDGE/GSM (GSM850/900) Handsets
EDGE/GSM (DCS/PCS) Handsets
W-CDMA Handsets/Data Cards
W-CDMA/GSM/EDGE Multimode Handsets
and Data Cards
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.
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
RF2705
Low Noise, Multi-Mode, Quad-Band, Quadrature
Modulator and PA Driver
RF2705PCBA-41XFully Assembled Evaluation Board
0
Rev A4 041026
4.00
4.00
-B-
-A-
0.10 C
0.10 C
0.10 C
0.10 C
1.00
0.80
SEATING
PLANE
-C-
0.08 C
0.05
0.00
Scale: None
0.10 C
2.45
+0.10
-0.10
2.45
+0.10
-0.10
0.50 TYP
0.10
C A B
M
0.30
0.50
Dimensions in mm.
Shaded lead is pin 1.
Package Style: QFN, 24-Pin, 4x4
9
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