CGA-6618 Datasheet, PDF (1/5 Pages) Stanford Microdevices – DUAL CATV BROADBAND HIGH LINEARITY GAAS HBT AMPLIFIER

Product Description
Stanford Microdevice’s CGA-6618 is a high performance
GaAs HBT MMIC Amplifier. Designed with the InGaP
process technology for excellent reliability. A Darlington
configuration is utilized for broadband performance. The
heterojunction increases breakdown voltage and minimizes
leakage current between junctions. The amplifier 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.
Amplifier Configuration
1
8
2
7
3
6
4
5
PPrerelilmimininaaryry
CGA-6618
Dual CATV Broadband High
Linearity GaAs HBT Amplifier
Product Features
• Excellent CSO/CTB/XMOD Performance at
+34 dBmV Output Power per Tone
• Dual Devices in each SOIC-8 Package simplify
Push-Pull configuration PC board layout
• Operates from a single supply
• Dropping Resistor provides
Temperature Compensation
Applications
• CATV Head End Driver and Predriver Amplifier
• CATV Line Driver Amplifier
Key 75 Ohm Parameters at Room Temperature 50-860MHz CATV Band Data
Gain
Test Conditions: V_S = 8.0 V
l_D= 160mA
R_BIAS=39 Ohms T_L = 25ºC
Z_S = Z_L = 75 Ohms
Freq.
50 MHz
500 MHz
860 MHz
Units
Min.
dB
Typ.
14.0
14.1
14.0
Max.
Output IP2
Tone spacing = 1 MHz
Pout/Tone = +6 dBm
50 MHz
72
500 MHz
dBm
82
860 MHz
74
Output IP3
Tone spacing = 1 MHz
Pout/Tone = +6 dBm
50 MHz
38
500 MHz
dBm
40
860 MHz
40
Output P1dB
50 MHz
500 MHz
860 MHz
dBm
21.5
21.5
21.0
Input Return Loss
50 MHz
500 MHz
dB
860 MHz
12.5
17.0
13.5
Output Return Loss
50 MHz
500 MHz
dB
860 MHz
10.0
19.0
13.5
Noise Figure
Average of 3 devices
Balun Insertion Loss Included
50 MHz
3.9
500 MHz
dB
4.1
860 MHz
4.4
CSO
Worst Case Over Band 79 Ch., Flat, +34dBmV
dBc
81
CTB
Worst Case Over Band 79 Ch., Flat, +34dBmV
dBc
70
XMOD
Worst Case Over Band 79 Ch., Flat, +34dBmV
dBc
65
Vd
V
4.7
Note: Measured in Push-Pull Application test board
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 2001 Stanford Microdevices, Inc. All worldwide rights reserved.
726 Palomar Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
http://www.stanfordmicro.com
EDS-101994 Rev B