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PDF RF2475 Data sheet ( Hoja de datos )
| Número de pieza | RF2475 | |
| Descripción | DUAL-BAND LOW NOISE AMPLIFIER/MIXER WITH FREQUENCY DOUBLER | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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Preliminary
8
RF2475
DUAL-BAND LOW NOISE AMPLIFIER/MIXER
WITH FREQUENCY DOUBLER
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.
Optimum Technology Matching® Applied
Si BJT
üGaAs HBT
GaAs MESFET
Si Bi-CMOS
SiGe
28 27 26 25 24 23 22
LNA VCC19 1
21 LO IN8
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
15 VCC TX19
9 10 11 12 13 14
Functional Block Diagram
1.00
0.85
0.80
0.65
Typ
0.60
0.24
2 0.30
0.18
5.00
sq.
2.50
Typ.
0.65
0.30
4 PLCS
2.85 sq.
2.55
12°
MAX
0.75
0.50
0.05
0.01
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.
Package Style: LCC, 28-Pin, 5x5
Features
• Complete Dual-Band Receiver Front-End
• Stepped LNA Gain Control
• Integrated LO Frequency Doubler
• Integrated LO Output Buffers
• Meets IS136 Specifications
Ordering Information
RF2475
RF2475 PCBA
Dual-Band Low Noise Amplifier/Mixer with Fre-
quency Doubler
Fully 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
8
Rev A2 010918
8-89
1 page  
Preliminary
RF2475
Parameter
PCS Receive Path, Cont’d
PCS Block Level
Electrical Specifications
Low Noise Amplifier
Frequency Range
Gain
Gain Step
Gain Variations versus Tempera-
ture
Noise Figure
Specification
Min.
Typ.
Max.
1930
1990
22
2
16 20
+1.0
1.7 1.9
Input Third Order Intercept
Terminating Impedance
Supply Current
Logic Input Low
Logic Input High
Mixer and LO Buffer
Frequency Range, Mixer Input
Frequency Range, IF Output
Frequency Range, LO Input to
Doubler
Frequency Range, Doubler Out-
put
Conversion Gain
Noise Figure (SSB)
Input Second Order Intercept
Input Third Order Intercept
Terminating Impedance,
Mixer In, LO In, LO Out
Terminating Impedance,
Mixer In, LO In, LO Out
Return Loss
Terminating Impedance,
IF Out
Mixer Supply Current
-7
-2
2.0
1930
100
1015
2030
7
7
-6
0
50
8
8
1039
2078
8
13
35
8
50
10
>10
23
9
9
0.5
1990
150
1063
2126
9
4
28
LO Input Level
LO Buffer Supply Current
-10 -7
-4
7.5 8.0
LO Output Level
-5 -2
Unit Condition
MHz
dB
dB
dB
dB
dB
dB
dBm
dBm
Ω
mA
mA
V
V
MHz
MHz
MHz
MHz
dB
dB
dBm
dBm
Ω
Ω
High Gain, Gain Select=High
Low Gain, Gain Select=Low
-30°C to +85°C
High Gain, Gain Select=High
Low Gain, Gain Select=Low
High Gain, Gain Select=High
Low Gain, Gain Select=Low
High Gain, Gain Select=High
Low Gain, Gain Select=Low
VCC=2.7V to 2.9V
VCC=2.7V to 2.9V
LO input to device at LO IN8.
Internal output of LO doubler driving the
mixer and TX LO buffer.
External Match
External Match
kΩ
mA
dBm
mA
dBm
Mixer “ON”
Including the LO doubler, but not the TX LO
buffer
Including the LO doubler and the TX LO
buffer
8
Rev A2 010918
8-93
5 Page 
Preliminary
Inner 1
RF2475
Inner 2
Back
8
Rev A2 010918
8-99
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet RF2475.PDF ] | |
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