PRELIMINARY
•
PERFORMANCE
♦
8.5 – 14.0 GHz Operating Bandwidth
♦
2.6 dB Noise Figure
♦
18 dB Small-Signal Gain
♦
17.5 dm Output Power
♦
+6V Single Bias Supply
♦
Adjustable Operating Current
♦
DC De-coupled Input and Output Ports
FMA411
L
OW
-N
OISE
X-BAND MMIC
•
DESCRIPTION AND APPLICATIONS
The FMA411 is a 2-stage, reactively matched pHEMT low-noise MMIC amplifier designed for use
over the 8.5 to 14.0 GHz bandwidth. The amplifier requires a single +6V supply and one off-chip
component for supply de-coupling; the supply voltage can be varied from +3V to +6V if needed.
Both the input and output ports are DC de-coupled. Grounding of the amplifier is provided by plated
thru-vias to the bottom of the die, no additional ground is required. Operating current can be
adjusted using the Source resistor ladders located along the bottom edge, by bonding a particular pad
to ground, in order to optimize noise or power performance.
Typical applications include low-noise front end amplifiers, and general gain block utilizations in X-
band. The amplifier is unconditionally stable over all load states (-45 to +85°C), and conditionally
stable if the input port is open-circuited.
•
ELECTRICAL SPECIFICATIONS AT 22°C
Parameter
Operating Frequency Bandwidth
Small Signal Gain
Saturated Drain Current
(see Note)
Operating Current
Small Signal Gain Flatness
Noise Figure
3
rd
-Order Intermodulation Distortion
Power at 1dB Compression
Input Return Loss
Output Return Loss
Reverse Isolation
I
DQ
∆S
21
NF
IMD
P
1dB
S
11
S
22
S
12
V
DD
= +6V
V
DD
= +6 V I
DD
≈
60% I
DSS
V
DD
= +6 V I
DD
≈
60% I
DSS
V
DD
= +6 V I
DD
≈
60% I
DSS
P
OUT
= +6 dBm SCL
V
DD
= +6 V I
DD
≈
60% I
DSS
V
DD
= +6 V I
DD
≈
60% I
DSS
V
DD
= +6 V I
DD
≈
60% I
DSS
V
DD
= +6 V I
DD
≈
60% I
DSS
16
-46
17.5
-10
-16
-40
-6
-10
-35
dBc
dBm
dB
dB
dB
125
140
±
0.8
2.6
165
±
1.2
3.5
mA
dB
dB
Symbol
BW
S
21
I
DSS
V
DD
= +6 V I
DD
≈
60% I
DSS
V
DD
= +3V
Test Conditions
Min
8.5
16.5
210
18
230
Typ
Max
14
21
270
Units
GHz
dB
mA
•
NOTE:
Continuous operation at I
DSS
is not recommended
Phone:
+1 408 850-5790
Fax: +1 408 850-5766
www.filcs.com
Revised:
7/19/04
Email:
sales@filcsi.com
FILTRONIC [ FILTRONIC COMPOUND SEMICONDUCTORS ]
