SCA-2 データシートの表示（PDF） - Stanford Microdevices
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SCA-2 Datasheet PDF : 6 Pages
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Product Description
Stanford Microdevices SCA-2 is a high performance Gallium
Arsenide Heterojunction Bipolar Transistor MMIC Amplifier. A
Darlington configuration is utilized for broadband performance
up to 4 GHz. The heterojunction increases breakdown voltage
and minimizes leakage current between junctions. Cancella-
tion of emitter junction non-linearities results in higher
suppression of intermodulation products. Typical IP3 at 850
MHz with 65mA is 34.7 dBm.
SCA-2
PPrreelilmimininaarryy
DC-4 GHz, Cascadable
GaAs HBT MMIC Amplifier
NGA-689 Recommended for New Designs
These unconditionally stable amplifiers provide 11 dB of gain
and 18 dBm of 1dB compressed power and require only a
single positive voltage supply. Only 2 DC-blocking capacitors,
a bias resistor and an optional inductor are needed for
operation. This MMIC is an ideal choice for wireless applica-
tions such as cellular, PCS, CDPD, wireless data and SONET.
15
Small Signal Gain vs. Frequency @ ID=65mA
10
dB
5
Product Features
High Output IP3: 35 dBm @ 850 MHz
Cascadable 50 Ohm Gain Block
Patented GaAs HBT Technology
Operates From Single Supply
0
0
1
2
3
4
5
6
Frequency GHz
Applications
Cellular, PCS, CDPD, Wireless Data, SONET
Electrical Specifications
Symbol
Parameters: Test Conditions:
Z0 = 50 Ohms, ID = 65GmHAz, T = 25°C
P1dB
Output Power at 1dB Compression
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
Units
dBm
dBm
dBm
Min.
Typ.
18.2
17.3
17.1
Max.
IP3
Third Order Intercept Point
Power out per tone = 0 dBm
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
dBm
32.5
dBm
dBm
34.7
31.1
29.7
S21
Small Signal Gain
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
dB
9.0
11.2
dB
11.5
dB
11.7
Bandwidth
S11
S22
(Determined by S11, S22 Values)
Input VSWR
Output VSWR
S12
Reverse Isolation
MHz
f = DC-4000 MHz
-
f = DC-4000 MHz
-
f = 850 MHz
dB
f = 1950 MHz
dB
f = 2400 MHz
dB
4000
1.4:1
1.8:1
16.4
16.6
16.6
NF
Noise Figure, ZS = 50 Ohms
f = 1950 MHz
dB
7.4
VD
Device Voltage
V
4.7
5.4
6.1
Rth,j-l Thermal Resistance (junction - lead)
o C/W
227
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
1
EDS-101390 Rev A
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