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RF2475 参数 Datasheet PDF下载

RF2475图片预览
型号: RF2475
PDF下载: 下载PDF文件 查看货源
内容描述: 双频段低噪声放大器/混频器,倍频器 [DUAL-BAND LOW NOISE AMPLIFIER/MIXER WITH FREQUENCY DOUBLER]
分类和应用: 电信集成电路放大器倍频器
文件页数/大小: 20 页 / 549 K
品牌: RFMD [ RF MICRO DEVICES ]
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Preliminary
RF2475
DUAL-BAND LOW NOISE AMPLIFIER/MIXER
WITH FREQUENCY DOUBLER
8
Typical Applications
• TDMA Handsets
Product Description
The RF2475 includes two downconverting mixers and
associated LNAs. It is designed for IS136 handset appli-
cations in the cellular 800MHz and PCS 1900MHz
bands. Each LNA has a gain bypass mode, which is con-
trolled by the gain select pin. The device internally ties the
two mixer outputs together, providing interface to a single
IF SAW filter. A frequency doubler is provided to supply
the LO signal to the PCS mixer and feeds the PCS trans-
mit LO output buffer. A cellular LO output buffer is also
included. The device is fabricated using Gallium Arsenide
HBT technology and is packaged in a 28-pin, 5mmx5mm
leadless package.
1.00
0.85
0.80
0.65
Typ
0.60
0.24
5.00
sq.
2.50
Typ.
0.65
0.30
4 PLCS
2
0.30
0.18
2.85 sq.
2.55
12°
MAX
0.05
0.01
0.75
0.50
0.50
0.23
0.13
4 PLCS
NOTES:
1 Shaded Pin is Lead 1.
2 Dimension applies to plated terminal: to be measured between 0.02 mm
and 0.25 mm from terminal end.
3 Pin 1 identifier must exist on top surface of package by identification
mark or feature on the package body. Exact shape and size is optional.
4 Package Warpage: 0.05 mm max.
5 Die Thickness Allowable: 0.305 mm max.
8
FRONT-ENDS
Optimum Technology Matching® Applied
Si BJT
Si Bi-CMOS
LNA OUT19
ü
GaAs HBT
SiGe
MXR VCC8
GND
GND
Package Style: LCC, 28-Pin, 5x5
GaAs MESFET
Features
MXR IN19
VCC TX8
TX LO8
• Complete Dual-Band Receiver Front-End
• Stepped LNA Gain Control
21
LO IN8
28
LNA VCC19
1
27
26
25
24
23
22
• Integrated LO Frequency Doubler
• Integrated LO Output Buffers
• Meets IS136 Specifications
GND
2
20
GND
LNA IN19
3
X2
19
IF A
GND
4
18
IF B
LNA IN8
5
17
GND
GND
6
16
VCC DOUBLER
GAIN SEL
7
8
LNA VCC8
9
LNA OUT
10
GND
11
GND
12
MXR VCC19
13
MXR IN8
14
TX L019
15
VCC TX19
Ordering Information
RF2475
RF2475 PCBA
Dual-Band Low Noise Amplifier/Mixer with Fre-
quency Doubler
Fully Assembled Evaluation Board
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Rev A2 010918
8-89