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.
1
2
3
4
8
7
6
5
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
9
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
2 of 8 Prelim DS091110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
CGA-1518Z
Absolute Maximum Ratings
Parameter Rating Unit
Max Device Current (ID) 300 mA
Max Device Voltage (VD)6.0V
Max RF Input Power 18 dBm
Max Junction Temp (TJ) 150 °C
Operating Temp Range (TL) -40 to +85 °C
Max Storage Temp 150 °C
Min Storage Temp -40 °C
Operation of this device beyond any one of these limits may cause permanent dam-
age. For reliable continuous operation, the device voltage and current must not
exceed the maximum operating values specified in the table on page one.
Bias Conditions should also satisfy the following expression:
IDVD<(T
J-TL)/RTH, j-l and TL=TLEAD
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical perfor-
mance or functional operation of the device under Absolute Maximum Rating condi-
tions is not implied.
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended appli-
cation circuitry and specifications at any time without prior notice.
0
5
10
15
20
25
30
35
0 200 400 600 800 1000 1200
dB
Frequency
Input Return Loss
0
5
10
15
20
25
30
0 200 400 600 800 1000 1200
dB
Frequency
Output Return Loss
0
4
8
12
16
20
0 200 400 600 800 1000 1200
dB
Frequency
Gain
0
5
10
15
20
25
0 200 400 600 800 1000 1200
dB
Frequency
Reverse Isolation
3 of 8Prelim DS091110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
CGA-1518Z
0
1
2
3
4
5
0 200 400 600 800 1000 1200
dB
Frequency
Noise Figure
0
10
20
30
40
50
60
70
0 100 200 300 400 500 600
dBc
Frequency
XMOD
0
10
20
30
40
50
0 200 400 600 800 1000 1200
dBm
Frequency
Output IP3
0
5
10
15
20
25
0 200 400 600 800 1000 1200
dBm
Frequency
Output P1dB
0
10
20
30
40
50
60
70
80
90
0 100 200 300 400 500 600
dBc
Frequency
CSO
0
10
20
30
40
50
60
70
80
0 100 200 300 400 500 600
dBc
Frequency
CTB
4 of 8 Prelim DS091110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
CGA-1518Z
50MHz to 1000MHz Evaluation Board Schematic
Component Chart
Value Qty Location
RFMD™ CGA-1518Z 1 U1
1pF 6 C11, C12, C17, C18, C19, C20
68pF 2 C10, 13
680pF 4 C1, C2, C5, C6
1000pF 4 C3, C4, C9, C14
0.01uF 2 C8, 15
1uF 2 C7, C16
6.2Ω1R3
5.6kΩ2R4, R5
300Ω2R1, R2
390nH 2 L2, L3
RFMD™ XFM-1002-1 uH 2 T1, T2
C16
1 uF C15
0.01 uF C14
1000 pF C13
68 pF C12
1 pF
1
2
3
4
8
7
6
5
L3
390 nH
C4
1000 pF R2
300 Ω
C3
1000 pF R1
300 Ω
L2
390 nH
C2
680 pF
C20
1 pF
C19
1 pF
C1
680 pF
R3
6.2 Ω
C6
680 pF
C5
680 pF
C17
1 pF
C18
1 pF
C7
1 uF C8
0.01 uF C9
1000 pF C10
68 pF C11
1 pF
XFM-1002-1uH
T1
JP2
VDD
J1
IN J2
OUT
T2
XFM-1002-1UH
U1
CGA1518Z
JP3
VDD
JP1
GND
JP4
GND
R4
5.6 kΩ
R5
5.6 kΩ
5 of 8Prelim DS091110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
CGA-1518Z
50MHz to 1000MHz Evaluation Layout
U1
6 of 8 Prelim DS091110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
CGA-1518Z
Pin Out
Part Identification
Pin Function Description
1RF IN
RF input pin. External DC-blocking capacitor is required.
2, 3,
6, 7
GND Connection to ground. Use via holes for best performance to reduce lead inductance as close to ground leads as
possible.
4RF IN
Same as pin 1.
5RF OUT/VCC
RF output and bias pin (open collector).
8RF OUT/VCC
Same as pin 5.
EPAD GND Exposed area on the bottom side of the package must be soldered to the ground plane of the board for optimum
thermal and RF performance. Several vias should be located under the EPAD as shown in the recommended
land pattern.
1
2
3
4
8
7
6
5
Amplifier Configuration
7 of 8Prelim DS091110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
CGA-1518Z
Suggested Pad Layout
Package Drawing and Marking
Dimensions in inches (millimeters)
Refer to drawing posted at www.rfmd.com for tolerances.
8 of 8 Prelim DS091110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
CGA-1518Z
Ordering Information
Part Number Description Reel Size Devices/Reel
CGA1518ZSB 5pcs Sample Bag NA NA
CGA1518ZSQ 25pcs Sample Bag NA NA
CGA1518ZSR Lead Free, RoHS Compliant 7 100
CGA1518ZTR7 Lead Free, RoHS Compliant 7 750
CGA1518ZTR13 Lead Free, RoHS Compliant 13 2500
CGA1518PCBA-410 50MHz to 1000MHz Evaluation Board NA NA