Product Description
Stanford Microdevices SGA-5263 is a high performance
cascadeable 50-ohm amplifier designed for operation at
voltages as low as 3.4V. This RFIC uses the latest Silicon
Germanium Heterostructure Bipolar Transistor (SiGe HBT)
process featuring 1 micron emitters with F
T
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-5263 requires only DC blocking and
bypass capacitors for external components.
Small Signal Gain vs. Frequency
15
Preliminary
Preliminary
SGA-5263
DC-4500 MHz, Silicon Germanium
Cascadeable Gain Block
10
dB
Product Features
DC-4500 MHz Operation
Single Voltage Supply
Low Current Draw: 60mA at 3.4V typ.
High Output Intercept: 29 dBm typ. at 1950MHz
Applications
Oscillator Amplifiers
Broadband Gain Blocks
IF/RF Buffer Amplifiers
5
25C
-40C
85C
0
0.1
1
1.9
2.8
3.7
4.6
5.5
Frequency GHz
Sy mbol
Parameters: Test C onditions:
Z
0
= 50 Ohms, I
D
= 60 mA, T = 25ºC
Output Power at 1dB C ompressi on
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
U nits
dB m
dB m
dB m
dB m
dB m
dB m
dB
dB
dB
MHz
f = 1950 MHz
f = 1950 MHz
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
f = 1950 MHz
-
-
dB
dB
dB
dB
V
ºC /W
Min.
Ty p.
16.3
15.0
14.0
32.5
29.3
27.3
13.3
12.6
12.3
4500
1.2:1
1.4:1
18.3
19.2
19.5
4.0
3.4
255
Max.
P
1dB
IP
3
Thi rd Order Intercept Poi nt
Power out per tone = -10 dBm
S
21
Bandwi dth
S
11
S
22
S
12
NF
V
D
R
th
, j-l
Small Si gnal Gai n
S
11
, S
22
: Mi ni mum 10db Return Loss (typ.)
Input VSWR
Output VSWR
Reverse Isolati on
Noi se Fi gure
D evi ce Voltage
Thermal Resi stance (juncti on - lead)
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 users 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
http://www.stanfordmicro.com
EDS-101540 Rev A
1
STANFORD [ STANFORD MICRODEVICES ]
