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-100629 Rev A
SGA-2486
DC-2000 MHz Silicon Germanium
HBT Cascadeable Gain Block
Product Features
• DC-2000 MHz Operation
• Single Voltage Supply
• Low Current Draw: 20mA typ. at 2.7V
• High Output Intercept: +20.8dBm typ. at
1950 MHz
• Low Noise Figure: 2.7dB typ. at 850 MHz
Applications
• Oscillator Amplifiers
• Cordless Phones
• IF/ RF Buffer Amplifier
• Drivers for CATV Amplifiers
Stanford Microdevices’ SGA-2486 is a high performance
cascadeable 50-ohm amplifier designed for operation at
voltages as low as 2.7V. This RFIC uses the latest Silicon
Germanium Heterostructure Bipolar Transistor (SiGe HBT)
process featuring 1 micron emitters with FT 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-2486 requires only DC
blocking and bypass capacitors for external components.
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3500
5000
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Small Signal Gain vs. Frequency
Preliminary
Preliminary
SGA-2486 DC-2000 MHz 2.7V SiGe Amplifier
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC http://www.stanfordmicro.com
EDS-100629 Rev A
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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.
Copyright 1999 Stanford Microdevices, Inc. All worldwide rights reserved.
Preliminary
Preliminary
SGA-2486 DC-2000 MHz 2.7V SiGe Amplifier
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC http://www.stanfordmicro.com
EDS-100629 Rev A
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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.
Copyright 1999 Stanford Microdevices, Inc. All worldwide rights reserved.
115 ohms
68pF
22nH
1uF 22pF
68pF
50 ohm
microstrip
50 ohm
microstrip
VCC=+5V
Application Schematic for +5V Operation at 900 MHz
Application Schematic for +5V Operation at 1900 MHz
115 ohms
100pF
33nH
1uF 68pF
100pF
50 ohm
microstrip
50 ohm
microstrip
VCC=+5V
1
2
3
4
1
2
3
4
Preliminary
Preliminary
SGA-2486 DC-2000 MHz 2.7V SiGe Amplifier
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC http://www.stanfordmicro.com
EDS-100629 Rev A
0
6
12
18
24
100
500
900
1900
2400
3500
5000
-40
-30
-20
-10
0
100
500
900
1900
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3500
5000
-40
-30
-20
-10
0
100
500
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3500
5000
-40
-30
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5000
S21, Id =20mA, T=+25C
dB
Frequency MHz
dB
dB dB
Frequency MHz
S12, Id =20mA, T=+25C
S22, Id =20mA, T=+25C
Frequency MHz
Frequency MHz
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.
S11, Id =20mA, T=+25C
S11, Id=20mA, Ta= +25C S22, Id=20mA, Ta= +25C
Freq. Min = 0.1 GHz
Freq. Max = 2.0 GHz
Freq. Min = 0.1 GHz
Freq. Max = 2.0 GHz
Preliminary
Preliminary
SGA-2486 DC-2000 MHz 2.7V SiGe Amplifier
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC http://www.stanfordmicro.com
EDS-100629 Rev A
0
6
12
18
24
100
500
900
1900
2400
3500
5000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
5000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
5000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
5000
S11, Id=20mA, Ta= -40C S22, Id=20mA, Ta= -40C
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.
Frequency MHz
S11, Id =20mA, T=-40C
Frequency MHz
S12, Id =20mA, T=-40C
S22, Id =20mA, T=-40C
Frequency MHz
Frequency MHz
dB dB
dB dB
Freq. Min = 0.1 GHz
Freq. Max = 2.0 GHz
Freq. Min = 0.1 GHz
Freq. Max = 2.0 GHz
S21, Id =20mA, T=-40C
Preliminary
Preliminary
SGA-2486 DC-2000 MHz 2.7V SiGe Amplifier
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC http://www.stanfordmicro.com
EDS-100629 Rev A
0
6
12
18
24
100
500
900
1900
2400
3500
5000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
5000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
5000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
5000
S11, Id=20mA, Ta= 85C S22, Id=20mA, Ta= 85C
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.
S21, Id =20mA, T=85C
dB
Frequency MHz
S11, Id =20mA, T=85C
dB
dB dB
Frequency MHz
S12, Id =20mA, T=85C
S22, Id =20mA, T=85C
Frequency MHz
Frequency MHz
Freq. Min = 0.1 GHz
Freq. Max = 2.0 GHz
Freq. Min = 0.1 GHz
Freq. Max = 2.0 GHz
Preliminary
Preliminary
SGA-2486 DC-2000 MHz 2.7V SiGe Amplifier
522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC http://www.stanfordmicro.com
EDS-100629 Rev A
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1RT-6842-AGS"70001
2RT-6842-AGS"310003
Part Number Ordering Information
Absolute Maximum Ratings
Caution:
Operation of this device above any one of these
parameters may cause permanent damage. Appropriate
precautions in handling, packaging and testing devices
must be observed.
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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.
Copyright 1999 Stanford Microdevices, Inc. All worldwide rights reserved.
Package Dimensions
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PCB Pad Layout
Thermal Resistance (Lead-Junction):
97° C/W
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