
Product Description
The information provided herein is believed to be reliable at press time. Stanford Microdevices assumes no responsibility for inaccuracies or omissions.
Stanford Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Stanford Microdevices does not authorize or warrant any Stanford
Microdevices product for use in life-support devices and/or systems.
Copyright 1999 Stanford Microdevices, Inc. All worldwide rights reserved.
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC http://www.stanfordmicro.com
Preliminary
EDS-100612 Rev A
SGA-5486
DC-2400 MHz Silicon Germanium
HBT Cascadeable Gain Block
Product Features
DC-2400 MHz Operation
Single Voltage Supply
High Output Intercept: +32.0dBm typ. at 850 MHz
Low Current Draw: 60mA at 3.5V typ.
Low Noise Figure: 3.0dB typ. at 850 MHz
Applications
Oscillator Amplifiers
PA for Low Power Applications
IF/ RF Buffer Amplifier
Drivers for CATV Amplifiers
Electrical Specifications at Ta = 25C
Stanford Microdevices’ SGA-5486 is a high performance
cascadeable 50-ohm amplifier designed for operation at
voltages as low as 3.5V. This RFIC uses the latest Silicon
Germanium Heterostructure Bipolar Transistor (SiGe HBT)
process featuring 1 micron emitters with F
T
up to 65 GHz.
This circuit uses a darlington pair topology with resistive
feedback for broadband performance as well as stability
over its entire temperature range. Internally matched to
50 ohm impedance, the SGA-5486 requires only DC
blocking and bypass capacitors for external components.
l
o
b
m
y
S
:
H
s
n
M
o
0
i
d
4
2
-
n
o
C
C
D
t
s
=
e
f
T
:
,
m
s
r
e
t
O
e
m
5
a
r
=
a
P
Z
0
z
0
h
0
s
t
n
U
.
n
i
M
.
p
y
T
.
a
M
P
B
d
1
n
o
s
e
r
p
m
o
C
B
d
1
t
r
e
w
o
P
t
p
O
z
H
H
M
M
0
0
5
5
9
8
1
=
=
f
f
z
m
m
B
B
d
d
0
1
0
1
S
1
2
n
G
l
n
g
S
l
m
S
z
H
H
H
M
M
M
0
0
0
0
0
0
0
0
0
2
-
5
-
1
0
0
-
C
0
0
D
1
2
=
=
=
f
f
f
z
z
0
0
B
B
B
d
d
d
5
1
7
1
3
1
5
1
S
2
1
n
o
s
e
s
e
v
e
R
z
H
H
H
M
M
M
0
0
0
0
0
0
0
0
0
2
-
5
-
1
0
0
-
C
0
0
D
1
2
=
=
=
f
f
f
z
z
0
0
B
B
B
d
d
d
5
2
0
2
0
1
S
1
1
R
W
S
V
t
p
n
z
H
M
0
0
0
5
-
C
D
=
f
-
1
5
S
2
2
R
W
S
V
t
p
O
z
H
M
0
0
0
5
-
C
D
=
f
-
1
5
P
I
3
t
P
t
e
c
e
r
e
d
r
O
d
r
T
z
H
H
M
M
0
0
5
5
9
8
1
=
=
f
f
z
m
m
B
B
d
d
0
3
0
2
F
N
e
r
g
e
s
N
z
H
H
M
M
0
0
0
0
4
0
2
-
1
0
-
C
0
D
1
=
=
f
f
z
0
B
B
d
d
0
5
T
D
y
a
D
p
u
o
r
G
z
H
M
0
0
0
1
=
f
S
p
0
2
1
V
D
e
g
a
V
e
c
e
D
V
1
5
9
I
D
t
e
r
C
e
c
e
D
A
m
0
6
0
6
12
18
24
1
5
9
1
2
3
5
Small Signal Gain vs. Frequency
dB
Frequency MHz