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PDF RF2451 Data sheet ( Hoja de datos )
| Número de pieza | RF2451 | |
| Descripción | 3V LOW NOISE AMPLIFIER | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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4
Typical Applications
• GSM Handsets
• CDMA Handsets
• TDMA Handsets
RF2451
3V LOW NOISE AMPLIFIER
• IF or RF Buffer Amplifiers
• Driver Stage for Power Amplifiers
• Oscillator Loop Amplifiers
Product Description
The RF2451 is a general purpose, low-cost, high perfor-
mance low noise amplifier designed for operation from a
2.7V to 4V supply with low current consumption. The
attenuation of the device is controlled when in power
down mode, providing a known gain step. The RF2451 is
available in a small industry-standard MSOP-8 surface
mount package, enabling compact designs which con-
serve board space. The design features accurate PTAT
(Proportional To Absolute Temperature) biasing scheme
using band gap cells.
.120
.116
.196
.190
1
10°MAX
0°MIN
.120
.116
.016
.010
.026
.027 .009
.017 .005
.006
.002
.036
.032
4
Optimum Technology Matching® Applied
Si BJT
!Si Bi-CMOS
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
RF OUT 1
ISET 2
VCC 3
ENABLE 4
Bias Circuits
8 RF IN
7 GND1
6 GND2
5 IPSET
Functional Block Diagram
Rev A8 000822
Package Style: MSOP-8
Features
• 700MHz to 2000MHz Operation
• 2.7V to 3.6V Single Supply
• +5dBm Input IP3 at 3.0mA
• 12dB Gain at 1950MHz
• 1.8dB Noise Figure at 1950MHz
• 17dB Gain Step
Ordering Information
RF2451
3V Low Noise Amplifier
RF2451 PCBA 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
4-247
1 page  
RF2451
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
J1
LNA OUTPUT
VCC
C2 L1
1.5 pF 3.3 nH
VCC
R1
1 kΩ
ENABLE
1
2
3
4
Bias Circuits
IPSET
ENABLE
VCC
ENVCC +
2.6 V -
C3
1 nF
C4 + C5
1 uF
22 nF
VCC+
2.7 V-
C1
22 nF
8
L2
7 10 nH
6
5
J2
LNA INPUT
IPSET
2451400A
P1
1 VCC
2 ENABLE
3 IPSET
4 GND
CON4
4
Rev A8 000822
4-251
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet RF2451.PDF ] | |
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