High Dynamic Range Low Noise Amplifier,
400 - 500 MHz
Features
•
•
•
•
•
•
Low Noise Figure: 0.9 dB
High OIP3: +28 dBm at 5 V, 60 mA bias
High Gain: 21 dB
Single Supply: +3 to +8 VDC
Low Cost SOIC-8 Plastic Package
Adjustable current: 20 to 80 mA with external
resistor
MAALSS0025
V1
Functional Block Diagram
GND
GND
R
EXT
V
DD
Description
M/A-COM’s MAALSS0025 is a high dynamic
range, low noise GaAs MMIC amplifier in a low
cost, surface mount package. It employs external
input matching to obtain optimum noise figure
performance and operating frequency flexibility.
The MAALSS0025 also features flexible biasing to
control the current consumption vs. dynamic range
trade-off. The MAALSS0025 can operate from any
supply voltage in the 3 V to 8 V range. Its current
can be controlled over a range of 20 mA to 80 mA
with an external resistor.
The MAALSS0025 is ideally suited for use where
low noise figure, high gain, high dynamic range,
and low power consumption are required. Typical
applications include receiver front ends in
CDMA450 base stations. It is also useful as a gain
block, buffer, driver, and IF amplifier in both fixed
and portable cellular and 450 MHz ISM
systems.
The MAALSS0025 is fabricated using a low-cost
0.5-micron gate length GaAs process.
The
process features full passivation for increased
performance reliability.
RF IN
RF OUT
GND
GND
Pin Configuration
Pin No.
1
2
3
4
5
6
7
8
Pin Name
GND
R
EXT
RF IN
GND
GND
RF OUT
V
DD
GND
Description
RF and DC Ground
External Current Control (optional)
RF Input
RF and DC Ground
RF and DC Ground
RF Output
Positive supply voltage
RF and DC Ground
Absolute Maximum Ratings
1
Parameter
V
DD
Input Power
Current
2
Channel Temperature
3
Operating Temperature
Absolute Maximum
+10 VDC
+10 dBm
120 mA
+150°C
-40°C to +85°C
-65°C to +150°C
Ordering Information
Part Number
MAALSS0025
MAALSS0025TR
MAALSS0025SMB
Package
Bulk Packaging
1000 piece reel
Sample Test Board
Storage Temperature
1. Exceeding any one or combination of these limits may cause
permanent damage to this device.
2. When pin #2 is used to increase current (see note 5).
3. Thermal resistance (θjc) = +88°C/W.
Note: Reference Application Note M513 for reel size
information.
1
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
High Dynamic Range Low Noise Amplifier,
400 - 500 MHz
MAALSS0025
V1
Electrical Specifications: T
A
= +25°C, Z
0
= 50 Ohms, F = 450 MHz, P
in
= -30 dBm
Parameter
Gain
Noise Figure
Input Return Loss
Output Return Loss
Output
1 dB Compression
Output IP3
Input IP3
Reverse Isolation
4. Using external 15-ohm resistor. See functional schematic.
Test Conditions
5 V, 60 mA
4
5 V, 60 mA
4
—
—
5 V, 60 mA
4
5 V, 60 mA
4
5 V, 60 mA
4
—
Units
dB
dB
dB
dB
dBm
dBm
dBm
dB
Min
19
—
—
—
—
—
3
—
Typ
21
0.9
9
11
16.5
28
7
34
Max
24
1.4
—
—
—
—
—
—
Functional Schematic
V
DD
External Circuitry Parts List
Part
C1
L3
C3
Value
100 pF
8 pF
470 pF
4 pF
22 nH
43 nH
12 nH
11 nH
15 Ohms
Purpose
DC Block
Input Matching
Bypass
Output Matching
Input Matching
Input Matching
RF Choke
Output Matching
Optional current control
(see note 5)
C2
C3
C4
OUT
IN
C1
L2
3
7
6
1,4,5,8
2
L4
R1
(See
note 5)
C4
L1
L2
L3
L4
R1
L1
C2
Handling Procedures
The following precautions should be observed to
avoid damage:
5. Pin 2 allows use of an external resistor to ground for
optional, higher current. For 20 mA operation, no resistor is
used.
For IDD ~ 40 mA, R2 = 43 ohms;
IDD ~ 60 mA, R2 = 15 ohms;
IDD ~ 80 mA, R2 = 10 ohms.
Static Sensitivity
Gallium Arsenide Integrated Circuits are sensitive
to electrostatic discharge (ESD) and can be
damaged by static electricity. Proper ESD control
techniques should be used when handling these
devices.
2
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
High Dynamic Range Low Noise Amplifier,
400 - 500 MHz
Typical Performance Curves over Temperature
Gain
+25°C
23
+85°C
-40°C
0
-10
-20
-30
-40
-50
MAALSS0025
V1
Reverse Isolation
+25°C
+85°C
-40°C
21
S21 (dB)
19
17
15
400
420
440
460
480
500
S12 (dB)
400
420
440
460
480
500
Frequency (MHz)
Frequency (MHz)
Input Return Loss
+25°C
0
-3
-6
-9
-12
-15
400
420
440
460
480
500
+85°C
-40°C
Output Return Loss
+25°C
0
-3
-6
+85°C
-40°C
S11 (dB)
S22 (dB)
-9
-12
-15
400
420
440
460
480
500
Frequency (MHz)
Frequency (MHz)
Noise Figure
+25°C
2.0
1.6
+85°C
-40°C
Output IP3
+25°C
35
30
+85°C
-40°C
Noise Figure (dB)
1.2
OIP3 (dBm)
420
440
460
480
500
25
20
15
10
400
420
440
460
480
500
0.8
0.4
0.0
400
Frequency (MHz)
Frequency (MHz)
3
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
High Dynamic Range Low Noise Amplifier,
400 - 500 MHz
SO-8
MAALSS0025
V1
Recommended PCB Configuration
Cross Section View
RF Traces & Components
RF Ground
DC Routing
Customer Defined
The PCB dielectric between RF traces and RF ground
layers should be chosen to reduce RF discontinuities
between 50-ohm lines and package pins. M/A-COM
recommends an FR-4 dielectric thickness of 0.008” (0.20
mm) yielding a 50-ohm line width of 0.015” (0.38 mm).
The recommended RF metalization thickness is 1 ounce
copper.
4
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
•
North America
Tel: 800.366.2266 / Fax: 978.366.2266
•
Europe
Tel: 44.1908.574.200 / Fax: 44.1908.574.300
•
Asia/Pacific
Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
