SGA-4586 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – DC-4000 MHZ SILICON GERMANIUM HBT CASCADEABLE GAIN BLOCK

Product Description
Stanford Microdevices’ SGA-4586 is a high performance
cascadeable 50-ohm amplifier designed for operation at
voltages as low as 3.6V. This RFIC uses the latest Silicon
Germanium Heterostructure Bipolar Transistor (SiGe HBT)
process featuring 1 micron emitters with FT up to 50 GHz.
Preliminary
SGA-4586
DC-4000 MHz Silicon Germanium HBT
Cascadeable Gain Block
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-4586 requires only DC blocking
and bypass capacitors for external components.
Small Signal Gain vs. Frequency
30
25
dB 20
15
10
0
1
2
3
4
5
Frequency GHz
Product Features
• DC-4000 MHz Operation
• Single Voltage Supply
• High Output Intercept: +29 dBm typ. at 850 MHz
• Low Current Draw: 45mA at 3.6V typ.
• Low Noise Figure: 1.7dB typ. at 850 MHz
Applications
• Oscillator Amplifiers
• PA for Low Power Applications
• IF/ RF Buffer Amplifier
• Drivers for CATV Amplifiers
Symbol
Parameters: Test Conditions:
Z₀ = 50 Ohms, I_D = 45 mA, T = 25^oC
P_1dB
Output Power at 1dB Compression
IP₃
Third Order Intercept Point
Power out per tone = 0 dBm
S₂₁
Small Signal Gain
Bandwidth
S₁₁
S₂₂
(Determined by S₁₁, S₂₂ Values)
Input VSWR
Output VSWR
S₁₂
Reverse Isolation
NF
V_D
Rth,j-l
Noise Figure, Z_S = 50 Ohms
Device Voltage
Thermal Resistance (junction - lead)
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
f = DC-4000 MHz
f = DC-4000 MHz
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
f = 1950 MHz
Units
Min.
Typ.
Max.
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
MHz
-
-
dB
dB
dB
dB
V
o_C/W
16.5
13.7
12.7
28.6
27.7
26.3
24.1
18.6
17.0
4000
1.40:1
1.30:1
27.1
22.0
20.3
1.9
3.6
97
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 2000 Stanford Microdevices, Inc. All worldwide rights reserved.
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
1
http://www.stanfordmicro.com
EDS-101266 Rev B