概述
数据手册ALN2250 概述
Internally Matched LNA Module 内部匹配LNA模块
ALN2250 数据手册
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PDF下载plerowALN2250
Internally Matched LNA Module
Features
Description
The plerowTM ALN-series is the compactly designed surface-mount
module for the use of the LNA with or without the following gain blocks in
the infrastructure equipment of the mobile wireless (CDMA, GSM, PCS,
PHS, WCDMA, DMB, WLAN, WiBro, WiMAX), GPS, satellite communi-
cation terminals, CATV and so on. It has an exceptional performance of
low noise figure, high gain, high OIP3, and low bias current. The stability
factor is always kept more than unity over the application band in order
to ensure its unconditionally stable implementation to the application
system environment. The surface-mount module package including the
completed matching circuit and other components necessary just in case
allows very simple and convenient implementation onto the system
board in mass production level.
· S21 = 24.5 dB @ 2200 MHz
= 25.5 dB @ 2300 MHz
· NF of 1.0 dB over Frequency
· Unconditionally Stable
· Single 5V Supply
· High OIP3 @ Low Current
Specifications (in Production)
Typ. @ T = 25°C, Vs = 5 V, Freq. = 2250 MHz, Zo.sys = 50 ohm
2-stage Single Type
Specifications
Parameter
Unit
Min
2200
24
Typ
Max
2300
Frequency Range
Gain
MHz
dB
25
± 0.5
1.0
More Information
Website: www.asb.co.kr
E-mail: sales@asb.co.kr
Gain Flatness
dB
± 0.7
Noise Figure
dB
1.05
Output IP3 (1)
dBm
dB
32
17
33
S11 / S22 (2)
-18 / -10
100
Tel: (82) 42-528-7223
Fax: (82) 42-528-7222
Output P1dB
dBm
µsec
mA
V
18
-
ASB Inc., 4th Fl. Venture Town
Bldg., 367-17 Goijeong-Dong,
Seo-Gu, Daejon 302-716, Korea
Switching Time (3)
Supply Current
Supply Voltage
Impedance
80
5
50
Ω
Max. RF Input Power
Package Type & Size
Operating temperature is -40°C to +85°C.
dBm
mm
C.W 29 ~ 31 (before fail)
Surface Mount Type, 13Wx13Lx3.8H
1) OIP3 is measured with two tones at an output power of 10 dBm / tone separated by 1 MHz.
2) S11/S22 (max) is the worst value within the frequency band.
3) Switching time means the time that takes for output power to get stabilized to its final level after switching DC voltage from 0 V to VS.
Outline Drawing (Unit: mm)
Pin Number
Function
RF In
plerow
ALN2250
3
8
RF Out
+Vcc
ASB Inc.
10
Others
Ground
(Top View)
(Bottom View)
Note: 1. The number and size of ground via holes in
a circuit board is critical for thermal RF
grounding considerations.
Solder Stencil Area
2. We recommend that the ground via holes be
placed on the bottom of all ground pins for
better RF and thermal performance, as
shown in the drawing at the left side.
(Side View)
Ø0.4 plated thru holes to ground plane
(Recommended Footprint)
1/3
www.asb.co.kr
November 2008
plerowALN2250
Internally Matched LNA Module
S-parameters
20
10
27
26
Typical Performance
(Measured)
S21
0
25
24
-10
-20
-30
-40
-50
S11
23
2200~2300
+5 V
S22
22
S12
21
20
2200
2225
2250
2275
2300
Frequency [MHz]
S-parameters & K Factor
Noise Figure
40
30
10
9
8
7
6
5
4
3
2
1
0
20
S21
S22
10
0
-10
-20
-30
-40
-50
-60
S11
S12
0
500
1000
1500
2000
2500
3000
3500
Frequency [MHz]
OIP3
P1dB
2/3
www.asb.co.kr
November 2008
plerowALN2250
Internally Matched LNA Module
Application Circuit
DC
+
-
Tantal
Capacitor
IN
OUT
C2
ALN
C1
1) The tantal capacitor is optional and for bypassing the AC noise introduced from the DC supply.
The capacitance value may be determined by customer’s DC supply status.
2) So-called DC blocking capacitors are always necessarily placed at the input and output port
for allowing only the RF signal to pass and blocking the DC component in the signal. The DC
blocking capacitors are included inside the LNA module. Therefore, C1 & C2 capacitors may
not be necessary, but can be added just in case that the customer wants. The value of C1 &
C2 is determined by considering the application frequency.
Recommended Soldering Reflow Process
Evaluation Board Layout
+Vcc
20~40 sec
260°C
Ramp-up
(3˚C/sec)
Ramp-down
(6°C/sec)
OUT
IN
200°C
150°C
60~180 sec
Size 25 x 25mm
(for ALN Series – 13x13mm)
3/3
www.asb.co.kr
November 2008
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