Page 1
Product Description
Stanford Microdevices SGA-6589 is a high performance
cascadeable 50-ohm amplifier. This RFIC uses the latest
Silicon Germanium Heterostructure Bipolar Transistor (SiGe
HBT) process featuring 1 micron emitters with FT up to
50 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-6589 requires only DC blocking
and bypass capacitors for external components.
Small Signal Gain vs. Frequency
30
25
dB
20
Preliminary
SGA-6589
DC-4000 MHz Silicon Germanium
HBT Cascadeable Gain Block
Product Features
DC-4000 MHz Operation
Single Voltage Supply
High Output Intercept: +32.5dBm typ. at 850 MHz
High Output Power : 21.5 dBm typ. at 850 MHz
High Gain : 25.6 dB typ. at 850 MHz
15
10
012345
Frequency GHz
Applications
Oscillator Amplifiers
Final PA for Low Power Applications
IF/ RF Buffer Amplifier
Drivers for CATV Amplifiers
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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.
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Copyright 2000 Stanford Microdevices, Inc. All worldwide rights reserved.
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EDS-101268 Rev B
Page 2
Absolute Maximum Ratings
Operation of this device above any one of these parameters
may cause permanent damage.
Bias Conditions should also satisfy the following expression:
IDVD (max) < (TJ - TOP)/Rth, j-l
Key parameters, at typical operating frequencies:
Preliminary
Preliminary
SGA-6589 DC-4000 MHz 4.8V SiGe Amplifier
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Phone: (800) SMI-MMIC http://www.stanfordmicro.com522 Almanor Ave., Sunnyvale, CA 94085
2
EDS-101268 Rev B
Page 3
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Application Schematic for Operation at 850 MHz
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SGA-6589 DC-4000 MHz 4.8V SiGe Amplifier
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Preliminary
Preliminary
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Application Schematic for Operation at 1950 MHz
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Phone: (800) SMI-MMIC http://www.stanfordmicro.com522 Almanor Ave., Sunnyvale, CA 94085
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VS
EDS-101268 Rev B
Page 4
Preliminary
Preliminary
SGA-6589 DC-4000 MHz 4.8V SiGe Amplifier
S21, ID =80mA, T=25C
30
25
dB
20
15
10
012345
Frequency GHz
S11, ID =80mA, T=25C S22, ID =80mA, T=25C
0
-5
dB
-10
-15
-20
012345
dB
dB
S12, ID =80mA, T=25C
-15
-20
-25
-30
-35
012345
Frequency GHz
0
-5
-10
-15
-20
012345
Frequency GHzFrequency GHz
S11, ID=80mA, Ta=25C
5 GHz
Freq. Min = 0.1 GHz
Freq. Max = 5.0 GHz
Phone: (800) SMI-MMIC http://www.stanfordmicro.com522 Almanor Ave., Sunnyvale, CA 94085
S22, I
=80mA, Ta=25C
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Freq. Min = 0.1 GHz
Freq. Max = 5.0 GHz
5 GHz
4
EDS-101268 Rev B
Page 5
Preliminary
3
4
15
Preliminary
SGA-6589 DC-4000 MHz 4.8V SiGe Amplifier
dB
dB
30
S21, ID =80mA, T=-40C S12, ID =80mA, T=-40C
25
20
15
10
012
0
-5
-10
-15
-20
012345
Frequency GHz Frequency GHz
S11, ID =80mA, T=-40C S22, ID =80mA, T=-40C
Frequency GHz Frequency GHz
-
-20
dB
-25
-30
-35
5
012345
0
-5
dB
-10
-15
012345
S22, I
S11, ID=80mA, Ta=-40C
Freq. Min = 0.1 GHz
Freq. Max = 5.0 GHz
5 GHz
Phone: (800) SMI-MMIC http://www.stanfordmicro.com522 Almanor Ave., Sunnyvale, CA 94085
5
=80mA, Ta=-40C
D
Freq. Min = 0.1 GHz
Freq. Max = 5.0 GHz
5 GHz
EDS-101268 Rev B
Page 6
30
01234
0
5
0
345
SGA-6589 DC-4000 MHz 4.8V SiGe Amplifier
S21, ID =80mA, T=85C S12, ID =80mA, T=85C
-1
Preliminary
Preliminary
dB
dB
25
20
15
10
Frequency GHz
S11, ID =80mA, T=85C
-5
-10
-15
-20
012345
Frequency GHz
S11, ID=80mA, Ta=85C
Freq. Min = 0.1 GHz
Freq. Max = 5.0 GHz
-20
dB
-25
-30
-35
5
12
Frequency GHz
S22, ID =80mA, T=85C
0
-5
-10
dB
-15
-20
-25
012345
Frequency GHz
S22, I
=80mA, Ta=85C
D
Freq. Min = 0.1 GHz
Freq. Max = 5.0 GHz
5 GHz
5 GHz
Phone: (800) SMI-MMIC http://www.stanfordmicro.com522 Almanor Ave., Sunnyvale, CA 94085
6
EDS-101268 Rev B
Page 7
Preliminary
Preliminary
SGA-6589 DC-4000 MHz 4.8V SiGe Amplifier
Appropriate precautions in handling, packaging
and testing devices must be observed.
Package Dimensions
Outline Drawing
1
A65
2
3
4
Part Number Ordering InformationCaution: ESD Sensitive
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Part Symbolization
The part will be symbolized with an A65 designator
on the top surface of the package.
PCB Pad Layout
Phone: (800) SMI-MMIC http://www.stanfordmicro.com522 Almanor Ave., Sunnyvale, CA 94085
7
EDS-101268 Rev B
Page 8
For 89 Outline
SGA-6589 DC-4000 MHz 4.8V SiGe Amplifier
Component Tape and Reel Packaging
Tape Dimensions
Preliminary
Preliminary
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EDS-101268 Rev B
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