SCA-4 Ver la hoja de datos (PDF) - Sirenza Microdevices => RFMD
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SCA-4 Datasheet PDF : 6 Pages
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Product Description
Sirenza Microdevices SCA-4 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. Cancellation
of emitter junction non-linearities results in higher suppression of
intermodulation products. Typical IP3 at 850 MHz with 65mA is
33.2 dBm.
SCA-4
DC-4 GHz, Cascadable
GaAs HBT MMIC Amplifier
NGA-589 Recommended for New Designs
These unconditionally stable amplifiers provide 20 dB of gain
and 17.7 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.
Small Signal Gain vs. Frequency @ ID=65mA
25
20
15
dB
10
5
0
0
1
2
3
4
5
6
Frequency GHz
Product Features
High Output IP3: 33.2 dBm @ 850 MHz
Cascadable 50 Ohm Gain Block
Patented GaAs HBT Technology
Operates From Single Supply
Applications
Cellular, PCS, CDPD, Wireless Data, SONET
Symbol
Parameter
Frequency
Units
Min.
Typ.
Max.
P1dB
Output Power at 1dB Compression
850 MHz
1950 MHz
2400 MHz
dBm
dBm
dBm
17.7
18.1
18.1
OIP3
Output Third Order Intercept Point
850 MHz
1950 MHz
2400 MHz
dBm
dBm
dBm
30.2
33.2
31.1
30.7
S21
Small Signal Gain
850 MHz
dB
18
1950 MHz
dB
2400 MHz
dB
20.0
19.0
18.6
Bandwidth (Determined by S11, S22 Values)
VSWRIN Input VSWR
VSWROUT Output VSWR
S12
Reverse Isolation
DC-4000 MHz
DC-4000 MHz
850 MHz
1950 MHz
2400 MHz
MHz
-
-
dB
dB
dB
4000
1.4:1
1.8:1
22.7
22.5
22.2
NF
Noise Figure
1950 MHz
dB
4.0
VD
Device Operating Voltage
V
4.4
4.8
5.2
RTH, j-l Thermal Resistance (junction - lead)
o C/W
224
Test Conditions:
VS = 8 V
RBIAS = 51 Ohms
ID = 65 mA Typ.
TL = 25ºC
OIP3 Tone Spacing = 1 MHz, Pout per tone = 0 dBm
ZS = ZL = 50 Ohms
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 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. 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.
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
http://www.sirenza.com
1
EDS-101394 Rev B
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