High Dynamic Range Low Noise Amplifier
800 - 1000 MHz
Features
•
Low Noise Figure: 1.2 dB
•
High Input: +18 dBm at 8 V, 60 mA bias
+6.5 dBm at 3 V, 20 mA bias
•
High Gain: 15 dB
•
Single Supply: +3 to +8 VDC
•
Low Cost SOIC-8 Plastic Package
•
Adjustable current: 20 to 80 mA with external
resistor
AM50-0003
V4
Functional Block Diagram
GND
GND
R
EXT
V
DD
Description
M/A-COM’s AM50-0003 is a high dynamic range,
GaAs MMIC, low noise amplifier in a low cost, SOIC
8-Lead, surface mount, plastic package. It employs
external
input
matching
to
obtain
optimum noise figure performance and operating
frequency flexibility.
The AM50-0003 also
features flexible biasing to control the current
consumption vs. dynamic range trade-off. The
AM50-0003 can operate from any supply voltage in
the 3V to 8V range.
Its current can be
controlled over a range of 20 mA to 80 mA with an
external resistor.
The AM50-0003 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 AMPS,
GSM, and ETACS base stations. It is also useful as
a gain block, buffer, driver, and IF amplifier in both
fixed and portable cellular and 900 MHz ISM
systems.
The AM50-0003 is fabricated using a low-cost 0.5-
micron gate length GaAs process. The process
features full passivation for increased performance
reliability. The AM50-0003 is 100% RF tested to
ensure performance specification compliance.
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 of the amplifier
RF and DC Ground
RF and DC Ground
RF Output of the amplifier
Positive supply voltage
RF and DC Ground
Absolute Maximum Ratings
1
Parameter
VDD
Input Power
Current
2
Channel Temperature
3
Operating Temperature
Storage Temperature
Absolute Maximum
+10 VDC
+17 dBm
120 mA
+150°C
-40°C to +85°C
-65°C to +150°C
Ordering Information
Part Number
AM50-0003
AM50-0003TR
AM50-0003SMB
Package
Bulk Packaging
1000 piece reel
Sample Test Board
Note: Reference Application Note M513 for reel size
information.
1. Exceeding any one or combination of these limits may cause
permanent damage.
2. When pin #2 is used to increase current. (see note 6)
3. Thermal resistance (θjc) = +88°C/W
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
800 - 1000 MHz
Electrical Specifications: T
A
= +25°C, Z
0
= 50
Ω,
F=900 MHz, P
in
= -30 dBm
Parameter
Gain
AM50-0003
V4
Test Conditions
5 V, 60 mA
4
3 V, 20 mA
Units
dB
dB
dB
dB
Ratio
Ratio
dBm
dBm
dBm
dBm
dB
Min
13
12
—
—
—
—
—
—
12.5
4.0
—
Typ
15
13.5
1.20
1.25
2.0:1
1.5:1
16.5
8.5
15
6.5
25
Max
—
—
1.50
1.50
—
—
—
—
—
—
—
Noise Figure
5 V, 60 mA
4
3 V, 20 mA
Input VSWR
Output VSWR
Output 1 dB Compression
—
—
5 V, 60 mA
4
3 V, 20 mA
Input IP3
5 V, 60 mA
4
3 V, 20 mA
Reverse Location
—
4. Using external 15 Ohm resistor. See functional bolck diagram herein.
Functional Schematic
V
DD
Component List
5
Part
C1
C2
C2
Value
47 pF
470 pF
12 nH
12 nH
5.1K
Ohms
See
Note 6
Case
Size
0603
0603
0603
0603
0603
0603
Manufacturer
Murata
Murata
Coilcraft
Coilcraft
Panasonic
Panasonic
Purpose
DC Block
By-Pass
Tuning
RF Choke
DC Return
Optional current
control
L2
L1
7
L1
IN
C1
R1
3
6
1,4,5,8
L2
OUT
R1
R2
2
R2
(See Note 6)
Handling Procedures
Please observe the following precautions to avoid
damage:
5. All External circuitry parts are readily available, low cost
surface mount components (.060 in. x .030 in. or .080 in.
x .050 in.)
6. 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
800 - 1000 MHz
Recommended PCB Configuration
Layout View
AM50-0003
V4
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
Ω
lines and package pins. M/A-COM recommends an FR-4
dielectric thickness of 0.008” (0.20 mm) yielding a 50
Ω
line
width of 0.015” (0.38 mm). The recommended RFmetalization
thickness is 1 ounce copper.
Designer’s Kit AM50-0003SMB
The AM50-0003SMB Designer’s Kit allows for immediate evaluation of M/A-COM’s AM50-0003. The Designer’s
Kit includes an evaluation board with mounted AM50-0003 and five loose AM50-0003’s. The evaluation board
consists of the recommended external surface mount circuitry, RF connectors, and a DC multi-pin connector, all
mounted to a multi-layer FR-4 PCB. The AM50-0003SMB evaluation PCB is illustrated below with all functional
ports labeled.
AM50-0003 Evaluation Board
Evaluation PCB & RF Connector Losses
Port Reference
LNA Input
LNA Output
Approximate RF Loss
0.1 dB @ 900 MHz
0.1 dB @ 900 MHz
The DC connector on the Designer’s Kit PCB allows convenient
DC line access. This is accomplished by the one or more of the
following methods.
7. A mating female multi-pin connector (newark Electronics
Stock # 46F-4658, not included).
8. Wires soldered to the necessary pins (not included).
9. Clip leads (not included).
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
800 - 1000 MHz
Typical Performance Curves
AM50-0003
V4
Test Conditions: T
A
= +25°C, Z
0
= 50
Ω,
V
DD
= 5 V, I
DD
= 60 mA unless otherwise specified
Gain vs. Frequency
17
3 Volts
5 Volts
8 Volts
VSWR vs. Frequency
5
INPUT
OUTPUT
4
16
15
3
14
2
13
12
0.5
0.7
0.9
1.1
1
0.5
0.7
0.9
1.1
Frequency (GHz)
Frequency (GHz)
Noise Figure vs. Frequency
1.4
Noise Figure vs. Current, F = 900 MHz
1.4
Vdd = 3 to 8 Volts
Vdd = 3 to 8 Volts
1.3
1.3
1.2
1.2
1.1
1.1
1
0.8
0.85
0.9
0.95
1
1
20
40
60
80
Frequency (GHz)
IDD (mA)
Output P1 dB vs. Frequency
24
Output P1 dB vs. Current, F = 900 MHz
24
20
20
3 VOLT
5 VOLT
6 VOLT
8 VOLT
16
3 VOLT
5 VOLT
6 VOLT
8 VOLT
12
16
12
8
0.8
0.85
0.9
0.95
1
8
20
40
60
80
Frequency (GHz)
IDD (mA)
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.
High Dynamic Range Low Noise Amplifier
800 - 1000 MHz
Typical Performance Curves
AM50-0003
V4
Test Conditions: T
A
= +25°C, Z
0
= 50
Ω,
V
DD
= 5 V, I
DD
= 60 mA unless otherwise specified
Input IP3 vs. Frequency
21
Input IP3 vs. Current, F = 900 MHz
21
3 VOLT
5 VOLT
6 VOLT
8 VOLT
17
17
13
3 VOLTS
5 VOLTS
6 VOLTS
8 VOLTS
9
13
9
5
0.8
0.85
0.9
0.95
1
5
20
40
60
80
Frequency (GHz)
IDD (mA)
SOIC-8
The AM50-0003 is fabricated using a low-cost 0.5-micron gate length GaAs process. The process features full passivation for increased
performance reliability. The AM50-0003 is 100% RF tested to ensure performance specification compliance.
5
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.
