Preliminary
Product Description
EDS-101993 Rev G
1
303 S. Technology Ct., Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for inaccuracies or omissions. Sirenza 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. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product for use in life-support devices and/or systems. Copyright 2001 Sirenza Microdevices, Inc..
All worldwide rights reserved.
CGA-3318
Dual CATV Broadband High
Linearity SiGe HBT Amplifier
Product Features
Excellent CSO/CTB/XMOD Performance at
+34 dBmV Output Power per Tone
Dual Devices in each SOIC-8 Package simplify
Push-Pull configuration PC board layout
5 to 900 MHz operation
Applications
CATV Head End Driver and Predriver Amplifier
CATV Line Driver Amplifier
Sirenza Microdevice's CGA-3318 is a high performance Silicon
Germanium HBT MMIC Amplifier. Designed with SiGe process
technology for excellent linearity at an exceptional price. A
Darlington configuration is utilized for broadband performance.
The heterojunction increases breakdown voltage and minimizes
leakage current between junctions. The CGA-3318 contains
two amplifiers for use in wideband Push-Pull CATV amplifiers
requiring excellent second order performance. The second and
third order non-linearities are greatly improved in the push pull
configuration.
1
2
3
4
8
7
6
5
Amplifier Configuration
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Test Conditions: V
S
= 8 V R
BIAS
= 51 Ohms I
D
= 150 mA Typ. @ T
L
= 25C Z
S
= Z
L
= 75 Ohms Push Pull Application Circuit
ELECTRICAL SPECIFICATIONS
2
CGA-3318 Dual SiGe HBT Amplifier
EDS-101993 Rev G
303 S. Technology Ct. Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
O utput R eturn L oss vs. Frequency
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
0
100
200
300
400
500
600
700
800
900
1000
Frequency (M Hz)
|S
22
| (
d
B)
-40C
+25C
+85C
Input Return L oss vs. F requency
-30
-25
-20
-15
-10
-5
0
0
100
200
300
400
500
600
700
800
900
1000
Frequ en cy (MH z)
|S
11
| (
d
B)
-40C
+25C
+85C
G a in v s . F re q u e n c y
6
8
10
12
14
16
0
1 0 0
2 00
30 0
4 00
50 0
6 0 0
7 00
80 0
9 00
1 0 00
F re qu e nc y (M Hz)
|S
21
| (
d
B
)
-4 0 C
+ 25 C
+ 85 C
Typical RF Performance: V
S
=8V, I
D
=150mA @ T
L
=+25C, R
BIAS
=51 Ohms, Push-Pull Config.
75 Ohm Push Pull S-parameters are available for download at www.sirenza.com
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CGA-3318 Dual SiGe HBT Amplifier
EDS-101993 Rev G
303 S. Technology Ct. Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
2 0
2 5
3 0
3 5
4 0
4 5
5 0
0
0 .2
0 .4
0 .6
0 .8
1
-4 0 C
2 5 C
8 5 C
5 0
5 5
6 0
6 5
7 0
7 5
8 0
0
0 . 2
0 . 4
0 . 6
0 . 8
1
- 4 0 C
+ 2 5 C
+ 8 5 C
IP3 (dBm)
Frequency (GHz)
IP2 vs. Temperature
IP2 (dBm)
Frequency (GHz)
IP3 vs. Temperature
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
0
3
6
9
1 2
1 5
6 6 M H z
1 0 0 M H z
2 5 0 M H z
5 0 0 M H z
20
30
40
50
60
70
80
90
100
0
3
6
9
12
15
66M Hz
100M Hz
250M Hz
500M Hz
Second Harmonic vs. Pout and Freq.
Data shown is typical at 25C
IM2 (dBc)
Pout (dBm)
Third Harmonic vs. Pout and Freq.
Data shown is typical at 25C
IM3 (dBc)
Pout (dBm)
40
50
60
70
80
90
100
110
0
100
200
300
400
500
600
CTB
C S O -
CS O +
Xm od
0
1
2
3
4
5
6
0
200
400
600
800
1000
Push-Pull CGA-3318 Noise Figure
50MHz-900MHz, Typical
NF (dB)
Frequency (MHz)
Push-Pull CGA-3318 CTB/CSO/XMOD
34 dBmV/Ch., 79 Ch.,Flat
dBc
Frequency (MHz)
Typical RF Performance: V
S
=8V, I
D
=150mA @ T
L
=+25C, R
BIAS
=51 Ohms, Push-Pull Config.
4
CGA-3318 Dual SiGe HBT Amplifier
EDS-101993 Rev G
303 S. Technology Ct. Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
CSO/CTB/XMOD Performance:
V
S
=8V, I
D
=150mA @ T
L
=+25C, R
BIAS
=51 Ohms, Push-Pull Config, 79 Ch. Flat Analog, No Digital Channels.
Push-Pull CGA-3318 CTB vs. Pout and Freq.
40
50
60
70
80
90
100
0
100
200
300
400
500
600
Frequency (MHz)
dBc
32dBmV
34dBmV
36dBmV
38dBmV
40dBmV
42dBmV
Push-Pull CGA-3318 XMOD vs. Pout and Freq.
40
50
60
70
80
90
100
0
100
200
300
400
500
600
Frequency (MHz)
dBc
32dBmV
34dBmV
36dBmV
38dBmV
40dBmV
42dBmV
Push-Pull CGA-3318 CSO- vs. Pout and Freq.
40
50
60
70
80
90
100
0
100
200
300
400
500
600
Frequency (MHz)
dBc
32dBmV
34dBmV
36dBmV
38dBmV
40dBmV
42dBmV
Push-Pull CGA-3318 CSO+ vs. Pout and Freq.
40
50
60
70
80
90
100
0
100
200
300
400
500
600
Frequency (MHz)
dBc
32dBmV
34dBmV
36dBmV
38dBmV
40dBmV
42dBmV
Note: CSO measurements > 85 dBc can be limited by system noise.
5
CGA-3318 Dual SiGe HBT Amplifier
EDS-101993 Rev G
303 S. Technology Ct. Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
Gain & Isolation vs. Frequency
0
2
4
6
8
10
12
14
16
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
G
a
in
(d
B
)
-32
-28
-24
-20
-16
-12
-8
-4
0
I
s
ol
at
i
on (
d
B)
Gain (dB)
Isolation (dB)
|S11| & |S22| vs. Frequency
-40
-35
-30
-25
-20
-15
-10
-5
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
dB
|S11|
|S22|
Typical RF Performance - Single Ended - 50 Ohm System
V
S
=8V, I
D
=75mA (one amp biased), T
L
=+25C, R
BIAS
=51 Ohms
Gain & Isolation vs. Frequency
0
2
4
6
8
10
12
14
16
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
Ga
in
(
d
B
)
-32
-28
-24
-20
-16
-12
-8
-4
0
I
s
ol
at
i
on (
d
B)
Gain (dB)
Isolation (dB)
Typical RF Performance - Single Ended - 37.5 Ohm System
V
S
=8V, I
D
=75mA (one amp biased), T
L
=+25C, R
BIAS
=51 Ohms
|S11| & |S22| vs. Frequency
-40
-35
-30
-25
-20
-15
-10
-5
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
dB
|S11|
|S22|
50 Ohm and 37.5 Ohm Single Ended S-parameter files are available for download at
www.sirenza.com
6
CGA-3318 Dual SiGe HBT Amplifier
EDS-101993 Rev G
303 S. Technology Ct. Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
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Basic Application Schematic 50-870 MHz
CGA-3318
SOIC-08
1000 pF
0.01
F 1000pF
68pF
V
s
R
BIAS
Amp 1
1000 pF
1000 pF
1000 pF
220 nH
Macom
ETC1-1-13
Macom
ETC1-1-13
1
F Tant.
1
F Tant.
0.01
F
1000pF
68pF
220 nH
V
s
R
BIAS
Amp 2
1
4
8
5
6,7
2,3
Evaluation Board Layout 50-870 MHz
I
r
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f
s
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s
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d
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R
D
A
m
0
5
1
=
V
(
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g
a
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o
V
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l
p
p
u
S
S
)
V
8
V
9
V
2
1
V
5
1
R
S
A
I
B
1
5
2
6
0
0
1
0
5
1
R
S
A
I
B
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e
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o
P
W
2
/
1
W
2
/
1
W
1
W
1
1
2
3
4
8
7
6
5
2(V
S
-V
D
)
I
D
R
BIAS
=
ECB-101611 Rev A
ESOP-8
Push-Pull
Eval Board
RF OUTPUT
RF INPUT
.01uF
1000pF
68pF
220nH
220nH
68pF
1000pF
.01uF
1000pF
1000pF
1000pF
1000pF
Balun ETC1-1-13
Balun ETC1-1-13
Rbias
Rbias
1uF Tant.
1uF Tant.
r
e
b
m
u
N
t
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a
P
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e
e
R
r
e
P
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e
c
i
v
e
D
e
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i
S
l
e
e
R
8
1
3
3
-
A
G
C
0
0
5
"
7
Part Number Ordering Information
Caution: ESD sensitive
Appropriate precautions in handling, packaging
and testing devices must be observed.
7
CGA-3318 Dual SiGe HBT Amplifier
EDS-101993 Rev G
303 S. Technology Ct. Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
R eturn Loss vs. Frequency
-30
-25
-20
-15
-10
-5
0
0
10
20
30
40
50
60
70
80
90
100
Frequency (M Hz)
|S
11
| an
d
|S
22
| (
d
B
)
|S
11
|
|S
22
|
G a in v s. F req u e n cy
6
8
10
12
14
16
0
10
20
30
40
50
60
70
80
90
100
F requency (M Hz)
|S
21
| (
d
B
)
5 - 100 MHz Application Circuit: V
S
=8V, I
D
=150mA @ T
L
=+25C, Push-Pull Config.
5-100 MHz Application Schematic
5-100 MHz Evaluation Board Layout
CGA-3318
SOIC-08
0.01
F
0.01
F 1000pF
68pF
V
s
R
BIAS
Amp 1
0.01
F
0.01
F
0.01
F
10
Macom
ETC1-1T
Macom
ETC1-1T
1
F Tant.
1
F Tant.
0.01
F
1000pF
68pF
10
V
s
R
BIAS
Amp 2
1
4
8
5
6,7
2,3
ECB-101611 Rev A
ESOP-8
Push-Pull
Eval Board
RF OUTPUT
RF INPUT
.01uF
1000pF
68pF
10uH
10uH
68pF
1000pF
.01uF
0.01uF
0.01uF
0.01uF
0.01uF
Balun ETC1-1T
Balun ETC1-1T
Rbias
Rbias
1uF Tant.
1uF Tant.
P 1 d B a n d IP 3 v s . F r e q u e n c y
1 6
1 7
1 8
1 9
2 0
2 1
2 2
0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
F r e q u e n c y ( M H z )
P1
d
B
(
d
B
m
)
3 4
3 5
3 6
3 7
3 8
3 9
4 0
IP3
(
d
B
m
)
P 1 d B
IP 3
N o is e F ig ure v s. F re q uency
0
1
2
3
4
5
6
7
8
0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
1 0 0
1 1 0
F r e q ue n c y (M H z )
NF
(d
B)
8
CGA-3318 Dual SiGe HBT Amplifier
EDS-101993 Rev G
303 S. Technology Ct. Broomfield, CO 80021 Phone: (800) SMI-MMIC http://www.sirenza.com
Lot Code
CGA3318
PCB Pad Layout
Dimensions in inches [millimeters]
Sized for 31 mil thick FR-4
Nominal Package Dimensions & Package Marking
Dimensions in inches [millimeters]
Refer to package drawing posted at www.sirenza.com for tolerances.
.088 [2.25]
DETAIL A
.061 [1.549]
.155 [3.937]
.025
.013 [.33] x 45
.008
.003 [.076]
SEATING PLANE
1
5
3
2
BOTTOM VIEW
.058 [1.473]
TOP VIEW
SIDE VIEW
END VIEW
PARTING LINE
.008 [.203]
4
6
7
8
.194 [4.93]
.061 [1.549]
.016 [.406]
.050 [1.27]
.194 [4.928]
5
SEE DETAIL A
.236 [5.994]
.155 [3.937]
EXPOSED PAD
.112
[2.85]
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