|
|
Número de pieza | RF2449 | |
Descripción | CDMA/FM LOW NOISE AMPLIFIER/MIXER 900MHZ DOWNCONVERTER | |
Fabricantes | RF Micro Devices | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de RF2449 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
No Preview Available ! Preliminary
8
Typical Applications
• CDMA/FM Cellular Systems
• Supports Dual-Mode CDMA/AMPS
• Supports Dual-Mode CDMA/TACS
RF2449
CDMA/FM LOW NOISE AMPLIFIER/MIXER
900MHZ DOWNCONVERTER
• General Purpose Downconverter
• Commercial and Consumer Systems
• Portable Battery-Powered Equipment
Product Description
The RF2449 is a receiver front-end designed for the
receive section of dual-mode CDMA/FM cellular applica-
tions. It is designed to amplify and downconvert RF sig-
nals, while providing 30dB of stepped gain control range.
Features include digital control of LNA gain, mixer gain,
LNA IIP3, and power down mode. Another feature of the
chip is adjustable IIP3 of the LNA and mixer using an off-
chip current setting resistor. The LNA IIP3 can be digitally
controlled between two levels to reduce current draw in
CDMA standby and other conditions where high IIP3 is
not required. Noise Figure, IP3, and other specs are
designed to be compatible with the IS-98 specification for
CDMA cellular communications. The IC is manufactured
on an advanced Silicon Bipolar process and packaged in
an SSOP-24.
Optimum Technology Matching® Applied
Si BJT
!Si Bi-CMOS
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
ENABLE 1
IP SET 2
IF SEL 3
LNA GAIN 4
MIX GAIN 5
LNA IN 6
VCC1 7
GND1B 8
GND1A 9
LNA OUT 10
11
12
24 LO IN
23 GND2
22 GND2
21 VCC2
20 IF2+
19 IF2-
18 BYPASS
17 IF1-
16 IF1+
15 GND3A
14 MIX IN
13 GND3B
Functional Block Diagram
0.157
0.150
1
0.344
0.337
0.2440
0.2284
8°MAX
0°MIN
0.012
0.008
0.025
0.0098
0.0040
0.0688
0.0532
0.050 0.0098
0.016 0.0075
Package Style: SSOP-24
Features
• Complete Receiver Front-End
• Stepped LNA/Mixer Gain Control
• Adjustable LNA/Mixer Bias Current
• Adjustable LNA/Mixer IIP3
• Digital LNA IIP3 Control
• Meets IS-98 IMD and Single Tone
Ordering Information
RF2449
RF2449 PCBA
CDMA/FM Low Noise Amplifier/Mixer 900MHz
Downconverter
Fully Assembled Evaluation Board
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
8
Rev A4 001016
8-75
1 page Preliminary
Pin Function Description
17
IF1-
Second differential output pin for the first mixer.
18 BYPASS Bypass pin for the LO bias reference.
19
IF2+
First differential output pin for the second mixer.
RF2449
Interface Schematic
See pin 16.
IF2- IF2+
20
IF2-
Second differential output pin for the second mixer.
21
VCC2
VCC pin for the LO circuits.
22
GND2
Ground pin for the LO circuits.
23
GND2
Ground pin for the LO circuits.
24
LO IN
Local oscillator input pin.
See pin 20.
LO IN
8
Rev A4 001016
8-79
5 Page Preliminary
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
2.7
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.7
LNA - Noise Figure
(Low Gain Mode)
NF, -30º
NF, 25º
NF, 85º
2.8 2.9 3.0 3.1
VCC (V)
LNA - Noise Figure
(High Gain/High IP Mode)
3.2
3.3
NF, -30º
NF, 25º
NF, 85º
2.8 2.9 3.0 3.1 3.2 3.3
VCC (V)
RF2449
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.7
LNA - Noise Figure
(High Gain/Low IP Mode)
NF, -30º
NF, 25º
NF, 85º
2.8 2.9 3.0 3.1 3.2 3.3
VCC (V)
8
Rev A4 001016
8-85
11 Page |
Páginas | Total 14 Páginas | |
PDF Descargar | [ Datasheet RF2449.PDF ] |
Número de pieza | Descripción | Fabricantes |
RF2442 | HIGH-LINEARITY LOW NOISE AMPLIFIER | RF Micro Devices |
RF2444 | HIGH FREQUENCY LNA/MIXER | RF Micro Devices |
RF2449 | CDMA/FM LOW NOISE AMPLIFIER/MIXER 900MHZ DOWNCONVERTER | RF Micro Devices |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |