Preliminary
CGA-3318
Product Description
Dual CATV Broadband High
Linearity SiGe HBTAmplifier
Sirenza Microdevice’s CGA-3318 is a high performance Silicon
Germanium HBT MMICAmplifier. Designed with SiGe process
technology for excellent linearity at an exceptional price. A
Darlington configuration is utilized for broadband performance.
The heterojunction increases breakdown voltage and minimizes
leakage current between junctions. The CGA-3318 contains
two amplifiers for use in wideband Push-Pull CATV amplifiers
requiring excellent second order performance. The second and
third order non-linearities are greatly improved in the push pull
configuration.
Product Features
• Excellent CSO/CTB/XMOD Performance at
+34 dBmV Output Power per Tone
Amplifier Configuration
• Dual Devices in each SOIC-8 Package simplify
Push-Pull configuration PC board layout
• 5 to 900 MHz operation
1
2
3
4
8
7
6
5
Applications
• CATV Head End Driver and Predriver Amplifier
• CATV Line DriverAmplifier
ELECTRICAL SPECIFICATIONS
Symbol
Parameter
Freq.(MHz)
Min.
Typ.
Max.
Units
*5
13.2
12.5
12.5
12.0
Small Signal Gain
50
G
dB
*See 5-100 MHz Application Circuit, pg. 7.
500
870
10.0
67.0
36.0
50
69.0
71.5
69.0
36.5
38.0
38.0
20.0
21.0
20.6
Output Second Order Intercept Point
OIP2
OIP3
P1dB
250
dBm
dBm
dBm
Tone Spacing = 1 MHz, Pout per tone = +6 dBm
500
50
Output Third Order Intercept Point
500
Tone Spacing = 1 MHz, Pout per tone = +6 dBm
870
50
Output Power at 1dB Gain Compression
500
870
18.6
10
500
17.0
IRL
Input Return Loss
dB
dB
50-870
500
12.0
ORL
Output Return Loss
50-870
10
50
4.2
4.3
5.0
Noise Figure
NF
500
870
dB
Balun Insertion Loss Included
6.0
CSO
CTB
XMOD
VD
Worst Case Over Band, 79 Ch., Flat, +34dBmV
Worst Case Over Band, 79 Ch., Flat, +34dBmV
Worst Case Over Band, 79 Ch., Flat, +34dBmV
Device Operating Voltage
70
68
63
4.1
150
dBc
dBc
dBc
V
3.9
135
4.3
165
ID
Device Operating Current
mA
RTH(J-L)
Thermal Resistance (Junction to Lead)
50
°C/W
Test Conditions: VS = 8 V RBIAS = 51 Ohms ID = 150 mA Typ. @ TL = 25ºC
ZS = ZL = 75 Ohms Push Pull Application Circuit
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.
303 S. Technology Ct., Broomfield, CO 80021
Phone: (800) SMI-MMIC
1
http://www.sirenza.com
EDS-101993 Rev G