鈥?/div>
DESCRIPTION AND APPLICATIONS
The FMA246 is a 3-stage, reactively matched pHEMT high-gain MMIC amplifier designed for use
over the 8 to 14 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. Typical applications include general (low noise) gain block utilizations in X-band. The
amplifier is unconditionally stable over all load states (-45 to +85擄C), and conditionally stable if the
input port is open-circuited.
鈥?/div>
ELECTRICAL SPECIFICATIONS AT 22擄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
鈭哠
21
NF
IMD
P
1dB
S
11
S
22
S
12
V
DD
= +6V
V
DD
= +6 V I
DD
鈮?/div>
60% I
DSS
V
DD
= +6 V I
DD
鈮?/div>
60% I
DSS
V
DD
= +6 V I
DD
鈮?/div>
60% I
DSS
P
OUT
= +9 dBm SCL
V
DD
= +6 V I
DD
鈮?/div>
60% I
DSS
V
DD
= +6 V I
DD
鈮?/div>
60% I
DSS
V
DD
= +6 V I
DD
鈮?/div>
60% I
DSS
V
DD
= +6 V I
DD
鈮?/div>
60% I
DSS
18
-44
20
-10
-16
-60
22
-8
-9
-50
dBc
dBm
dB
dB
dB
2.3
145
170
鹵
0.6
2.5
195
鹵
1.0
2.8
mA
dB
dB
Symbol
BW
S
21
I
DSS
V
DD
= +6 V I
DD
鈮?/div>
60% I
DSS
V
DD
= +3V
Test Conditions
Min
8
27
220
29
250
Typ
Max
14
31
280
Units
GHz
dB
mA
鈥?/div>
NOTE:
Continuous operation at I
DSS
is not recommended
Phone:
+1 408 850-5790
www.filcs.com
Revised:
7/28/04
Email:
sales@filcsi.com
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