Features
1 of 8
Optimum Technology
Matching® Applied
GaAs HBT
InGaP HBT
GaAs MESFET
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
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Product Description
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
InP HBT
LDMOS
RF MEMS
CGA-1518Z
PUSH-PULL 50MHz to 1000MHz HIGH
LINEARITY InGaP HBT AMPLIFIER
RFMD’s CGA-1518Z is a high performance InGaP HBT MMIC Amplifier. Designed
with InGaP process technology for excellent reliability. A Darlington configuration is
utilized for broadband performance. The heterojunction increases breakdown volt-
age and minimizes leakage current between junctions. The CGA-1518Z 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.
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Amplifier Configuration
5V Single Supply
Excellent Linearity Perfor-
mance at +34dBmV Output
Power Per Tone
Two Amplifiers in Each SOIC-8
Package Simplify Push-Pull
Configuration PC Board Lay-
out
Available in Lead-Free, RoHS
Compliant, and Green Pack-
aging
SOIC-8 Package
Applications
CATV Head End Driver and
Predriver Amplifier
CATV Line Driver Amplifier
Prelim DS091110
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Package: SOIC-8
CGA-1518Z
Push-Pull
50MHz to
1000MHz
High Linearity
InGaP HBT
Amplifier
Parameter Specification Unit Condition
Min. Typ. Max.
Small Signal Gain 14.9 15.5 dB 50MHz to 1000MHz
Gain Flatness ±0.6 dB 50Hz to 1000MHz
Output IP3 37 dBm 500MHz
Tone Spacing = 1 MHz
POUT per Tone=+6dBm
Output Power at 1dB Gain Compres-
sion 20 dBm 500MHz
Input Return Loss 20 dB 500MHz
Output Return Loss 20 dB 500MHz
Noise Figure
Balun Insertion Loss Included 4.5 dB 50MHz to 1000MHz
CSO 77 dBc 79 Ch., Flat Tilt, +34dBmV
CTB 70 dBc 79 Ch., Flat Tilt, +34dBmV
XMOD 61 dBc 79 Ch., Flat Tilt, +34dBmV
Device Operating Voltage 5.0 V
Device Operating Current 150 mA 5V VCC
Thermal Resistance
(Junction to Lead) 30 °C/W Junction to case slug
Test Conditions: VCC=5V, ID=150mA Typ., TL=25°C, ZS=ZL=75Ω, Push Pull Application Circuit