Preliminary
EDS-100935 Rev B
Product Description
522 Almanor Ave., Sunnyvale, CA 94085 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.
-80
-60
-40
-20
0
100
500
900
1900
2400
3500
6000
dB
Frequency MHz
SGA-1263
DC-4000 MHz Silicon Germanium
HBT Cascadeable Gain Block
Product Features
DC-4000 MHz Operation
Single Supply Voltage
Excellent Isolation, >50 dB at 900 MHz
50 Ohms In/Out, Broadband Match for Operation
from DC-4 GHz
Unconditionally Stable
Applications
Buffer Amplifier for Oscillator Applications
Broadband Gain Blocks
IF Amp
Isolation vs. Frequency
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Sirenza Microdevices SGA-1263 is a Silicon Germanium HBT
Heterostructure Bipolar Transistor (SiGe HBT) amplifier that
offers excellent isolation and flat gain response for applica-
tions to 4 GHz.
This RFIC is a 2-stage design that provides high isolation of
up to 40dB at 2 GHz and is fabricated using the latest SiGe
HBT 50 GHz FT process, featuring 1 micron emitters with
Vceo > 7V.
These unconditionally stable amplifiers have less than 1dB
gain drift over 125ºC operating range (-40C to +85C) and
are ideal for use as buffer amplifiers in oscillator applica-
tions covering cellular, ISM and narrowband PCS bands.
2
Preliminary
Preliminary
SGA-1263 DC-4000 MHz 2.8V SiGe Amplifier
EDS-100935 Rev A
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
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Absolute Maximum Ratings
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3
Preliminary
Preliminary
SGA-1263 DC-4000 MHz 2.8V SiGe Amplifier
EDS-100935 Rev A
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
270 ohms
68pF
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
270 ohms
100pF
1uF 68pF
100pF
50 ohm
microstrip
50 ohm
microstrip
VCC=+5V
346
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3
4
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Note: A bias resistor is needed for
stability over temperature
4
Preliminary
Preliminary
SGA-1263 DC-4000 MHz 2.8V SiGe Amplifier
EDS-100935 Rev A
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
6000
0
6
12
18
24
100
500
900
1900
2400
3500
6000
-80
-60
-40
-20
0
100
500
900
1900
2400
3500
6000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
6000
S21, Id =8 mA, T=+25C
dB
Frequency MHz
dB
dB dB
Frequency MHz
S12, Id =8 mA, T=+25C
S22, Id =8 mA, T=+25C
Frequency MHz
Frequency MHz
S11, Id =8 mA, T=+25C
S11, Id=8 mA, Ta= +25C S22, Id=8 mA, Ta= +25C
Freq. Min = 0.1 GHz
Freq. Max = 6.0 GHz
Freq. Min = 0.1 GHz
Freq. Max = 6.0 GHz
5
Preliminary
Preliminary
SGA-1263 DC-4000 MHz 2.8V SiGe Amplifier
EDS-100935 Rev A
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
6000
0
6
12
18
24
100
500
900
1900
2400
3500
6000
-80
-60
-40
-20
0
100
500
900
1900
2400
3500
6000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
6000
S21, Id =8 mA, T=-40C
dB
Frequency MHz
dB
dB dB
Frequency MHz
S12, Id =8 mA, T=-40C
S22, Id = 8 mA, T=-40C
Frequency MHz
Frequency MHz
S11, Id =8 mA, T=-40C
S11, Id=8 mA, T=-40C S22, Id=8 mA, T=-40C
Freq. Min = 0.1 GHz
Freq. Max = 6.0 GHz
Freq. Min = 0.1 GHz
Freq. Max = 6.0 GHz
6
Preliminary
Preliminary
SGA-1263 DC-4000 MHz 2.8V SiGe Amplifier
EDS-100935 Rev A
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
6000
0
6
12
18
24
100
500
900
1900
2400
3500
6000
-80
-60
-40
-20
0
100
500
900
1900
2400
3500
6000
-40
-30
-20
-10
0
100
500
900
1900
2400
3500
6000
S21, Id =8 mA, T=+85C
dB
Frequency MHz
dB
dB dB
Frequency MHz
S12, Id =8 mA, T=+85C
S22, Id =8 mA, T=+85C
Frequency MHz
Frequency MHz
S11, Id =8 mA, T=+85C
S11, Id=8 mA, T=+85C S22, Id=8 mA, T=+85C
Freq. Min = 0.1 GHz
Freq. Max = 6.0 GHz
Freq. Min = 0.1 GHz
Freq. Max = 6.0 GHz
7
Preliminary
Preliminary
SGA-1263 DC-4000 MHz 2.8V SiGe Amplifier
EDS-100935 Rev A
522 Almanor Ave., Sunnyvale, CA 94085 Phone: (800) SMI-MMIC http://www.sirenza.com
1.30 (0.051)
REF.
1.35 (0.053)
1.15 (0.045)
2.2 0 (0.087)
2.0 0 (0.079)
0.650 BSC (0.025)
2.20 (0.087)
1.80 (0.071)
1.00 (0.039)
0.80 (0.031)
0.25 (0.010)
0.15 (0.006)
0.10 (0.004)
0.00 (0.00)
0.425 (0.017)
TYP.
0.20 (0.0080
0.10 (0.004)
0.30 (0.012)
0.10 (0.0040
0.30 REF.
10°
0.026
0.075
0.016
0.035
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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1RT-3621-AGS"70003
Package Dimensions
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2DNG
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Thermal Resistance (Lead-Junction):
255° C/W
A12
Pad Layout
Package Marking
Note: Pin 1 is on lower left
when you can read
package marking
456
123
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