Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
101476F • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 15, 2004 1
DATA SHEET
CX65105: 1700 – 2200 MHz Linear Power Amplifier
Applications
• PCS/DCS/UMTS
• Repeaters
• WLL and ISM bands
• Mobile radio
• Telematics
Features
• Typical POUT of 28.5 dBm
• High linearity
• Low power consumption
• Single +5 V supply
• LCC (8-pin, 8 x 8 mm) package
Description
Skyworks CX65105 Power Amplifier (PA) is a fully matched, 8-pin
Leadless Chip Carrier (LCC) surface mount module, developed for
Personal Communications System (PCS), Digital Communications
System (DCS), and Universal Mobile Telephone System (UMTS)
applications. Wireless Local Loop (WLL) and Industrial, Scientific,
Medical (ISM) applications are also supported.
This small, power-efficient PA has a full 1700 to 2200 MHz
bandwidth coverage packed into a single compact package. All
active circuitry in the module is contained in a single Gallium
Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC).
The CX65105 is manufactured with Skyworks Aluminum (Al) GaAs
Heterojunction Bipolar Transistor (HBT) process, which allows for
single supply operation while maintaining high efficiency and
good linearity.
The 8-pin Leadless Chip Carrier (LCC) device package and pinout
are shown in Figure 1. Figure 2 shows a functional block diagram
for the CX65105. Signal pin assignments and functional pin
descriptions are provided in Table 1.
1
2
3
4
GND
RFIN
V
REF
GND
RFOUT
GND
VCC1
V
CC2
8
7
6
5
S384
Figure 1. CX65101 Pinout– 8-Pin LCC
Package (Top View)
Driver Stage
Bias
Input Match PA PA
RFIN
VCC1VREF
MMIC
Module
2
RFOUT
6
83
1, 5, 7
Power Stage
Bias
Interstage Match Output Match
C1220
VCC2
GND
4
Figure 2. CX65105 Functional Block Diagram
DATA SHEET • CX65105
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2 October 15, 2004 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 101476F
Table 1. CX65105 Signal Descriptions
Pin # Name Description Pin # Name Description
1 GND Ground 5 GND Ground
2 RFIN RF input 6 RFOUT Rf output
3 VREF Reference voltage 7 GND Ground
4 VCC2 Supply voltage 8 VCC1 Supply voltage
Technical Description
The CX65105 is comprised of two amplifier stages. The matching
circuits for the input stage, inter-stage, and output stage are
contained within the device. The bias circuits for both input and
output stages are included within the device for optimum
temperature tracking performance.
The CX65105 is internally matched for optimum linearity and
efficiency. The input and output stages are independently
supplied using the VCC1 and VCC2 supply lines, pins 8 and 4
respectively. The bias reference voltage is supplied using a
common VREF (pin 3) line.
Package and Handling Information
Since the device package is sensitive to moisture absorption, it is
baked and vacuum packed before shipping. Instructions on the
shipping container label regarding exposure to moisture after the
container seal is broken must be followed. Otherwise, problems
related to moisture absorption may occur when the part is
subjected to high temperature during solder assembly.
If the part is attached in a reflow oven, the temperature ramp rate
should not exceed 5 °C per second. Maximum temperature
should not exceed 225 °C and the time spent at a temperature
that exceeds 210 °C should be limited to less than 10 seconds. If
the part is manually attached, precaution should be taken to
ensure that the part is not subjected to a temperature that
exceeds 300 °C for more than 10 seconds.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format. For packaging details, refer to the Skyworks
Application Note, Tape and Reel, document number 101568.
Electrical and Mechanical Specifications
The absolute maximum ratings of the CX65105 are provided in
Table 2. The recommended operating conditions are specified in
Table 3 and electrical specifications are provided in Table 4.
Typical performance characteristics over temperature of the
CX65105 are illustrated in Figures 3 through 8.
Figure 13 shows the package dimensions for the 8-pin CX65105
LCC and Figure 14 provides the tape and reel dimensions.
Electrostatic Discharge (ESD) Sensitivity
The CX65105 is a static-sensitive electronic device. Do not
operate or store near strong electrostatic fields. Take proper ESD
precautions.
DATA SHEET • CX65105
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
101476F • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 15, 2004 3
Table 2. CX65105 Absolute Maximum Ratings
Parameter Symbol Min Typical Max Units
RF input power PIN 7 dBm
Supply voltage VCC 6 V
Reference voltage VREF 4 V
Case operating temperature TC –40 +85 °C
Storage temperature TST –55 +125 °C
Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal values.
Table 3. CX65105 Recommended Operating Conditions
Parameter Symbol Min Typical Max Units
Supply voltage VCC 5 V
Reference voltage VREF 3.6 V
Operating frequency FO 1700 1900 2200 MHz
Table 4. CX65105 Electrical Characteristics
(VCC = 5.0 V, VREF = 3.6 V, Frequency = 1900 MHz, TC = 25 °C, unless otherwise noted)
Parameter Symbol Test Conditions Min Typical Max Units
Analog Inputs
Frequency range 1700 1900 2200 MHz
Quiescent current IQ 143 185 mA
Small signal gain G PIN = –15 dBm 23.5 25.0 dB
Output power POUT PIN = 5 dBm 27 28.5 dBm
Efficiency PAE PIN = 5 dBm 25 30 %
Noise Figure (NF) NF 6 7 dB
Output IP3 OIP3 Two tones with 100 kHz
spacing, PIN = 0 dBm per
tone
36 40 dBm
POUT @ ACPR = –45 dBc POUT_ACPR f = 1960 MHz 22 24 dBm
POUt @ ACLR = –45 dBc POUT_ACLR f = 2140 MHz 18 20 dBm
Note: The above specifications apply only to the 1900 MHz operating frequency.
24
25
26
27
28
29
30
31
234567
Pin (dBm)
Pout (dBm)
-30C
25C
85C
Figure 3. Typical POUT vs PIN Over Temperature
16
18
20
22
24
26
28
30
32
34
36
234567
Pin (dBm)
PAE (%)
85C
25C
-30C
Figure 4. Typical PAE vs PIN Over Temperature
DATA SHEET • CX65105
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
4 October 15, 2004 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 101476F
0
5
10
15
20
25
30
1700 1800 1900 2000 2100 2200
Freq (MHz)
Small Signal Gain (dB)
85C
25C
-30C
Figure 5. Typical Small Signal Gain vs Frequency Over
Temperature
0
10
20
30
40
50
1700 1800 1900 2000 2100 2200
Freq (MHz)
OIP3 (dBm)
85C
25C
-30C
Figure 7. Typical OIP3 vs Frequency Over Temperature
0
1
2
3
4
5
6
7
8
1700 1800 1900 2000 2100 2200
Freq (MHz)
NF (dB)
85C
25C
-30C
Figure 6. Typical Noise Figure vs Frequency Over Temperature
0
5
10
15
20
25
30
35
1700 1800 1900 2000 2100 2200
Freq (MHz)
Pout (dBm)
-30C
25C
85C
Figure 8. Typical POUT vs Frequency Over Temperature
Evaluation Board Description
Skyworks CX65105 Evaluation Board is used to test the
performance of the CX65105 PA. The Evaluation Board schematic
diagram is shown in Figure 9. The schematic shows the basic
design of the board for the 1700 to 2200 MHz range. Figure 10
provides the Evaluation Board assembly diagram. Figure 11
provides the Evaluation Board layer detail.
Circuit Design Considerations
The following design considerations are general in nature and
must be followed regardless of final use or configuration
1. Paths to ground should be made as short as possible.
2. The ground pad of the CX65105 PA has special electrical and
thermal grounding requirements. This pad is the main thermal
conduit for heat dissipation. Since the circuit board acts as the
heat sink, it must shunt as much heat as possible from the
amplifier. As such, design the connection to the ground pad to
dissipate the maximum wattage produced to the circuit board.
Multiple vias to the grounding layer are required.
3. Two external output bypass capacitors (0.01 µF and 4.7 µF)
are required on the VCC1 (pin 8) supply input. The same two
capacitors are also required on the VCC2 (pin 4) supply input.
Both capacitors should be placed in parallel between the
supply line and ground. Also, a bypass capacitor of 0.01 µF is
required on the VREF input (pin 3). See Figure 9 for a detailed
diagram.
4. VCC1 (pin 8) and VCC2 (pin 4) may be connected together at
the supply.
5. At the RF input (pin 2), a DC blocking capacitor is required.
6. The RF output includes an onboard internal DC blocking
capacitor. All impedance matching is provided internally.
Therefore, the application only needs to provide a good 50 Ω
load.
Testing Procedure
Use the following procedure to set up the CX65105 Evaluation
Board for testing. Refer to Figure 12 for guidance:
DATA SHEET • CX65105
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
101476F • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 15, 2004 5
1. Connect a +5.0 V supply voltage to VCC1 and VCC2, and
+3.6 V supply voltage to VREF. If available, enable the current
limiting function of the power supplies to 1.0 A for the +5.0 V
supply current and 30 mA for the +3.6 V supply current.
2. Connect a signal generator to the RF signal input port. Set it to
the desired RF frequency at a power level of 7 dBm or less to
the Evaluation Board but do NOT enable the RF signal.
3. Connect a spectrum analyzer to the RF signal output port.
4. Enable the power supply.
5. Enable the RF signal.
6. Take measurements.
CAUTION: If the input signal exceeds the rated power, the
CX65105 Evaluation Board can be permanently
damaged.
RFIN
VREF
RF in
RF ou
t
Pin 9
Package Base
+5.0 V
C3
0.01 µF
C6
0.01 µF
C5
4.7 pF
C4
4.7 µF
T2
50 Ω
microstrip
T1
Notes:
1) Pin 9 provides both a thermal and electrical ground.
This ground path is critical and must be as short
as possible.
2) Transmission line lengths T1 and T2 should be
minimized.
T3
50 Ω
microstrip
7
6
5
RFOUT
1
2
3
4
8
VCC2
+3.6 V
C1237d
+5 V
C2
4.7 µF
C1
0.01 µF
VCC1
Figure 9. Evaluation Board Schematic, 1700 MHz to 2200 MHz
J1 (RF In)
J3
J2 (RF Out)
C1257b
C1
C5
C6
C4
C2
C3
8x8 PA EVALUATION BD.
GND
GND
GND
VCC2
VCC1
VREF
Figure 10. Evaluation Board Assembly Diagram
DATA SHEET • CX65105
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
6 October 15, 2004 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 101476F
Layer 2: Inner Traces
Layer 3: Solid Ground Plane
Layer 1: Top - Metal
C1253d
Figure 11. Evaluation Board Layer Detail
DATA SHEET • CX65105
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
101476F • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 15, 2004 7
C1240d
Signal Generator
Power Meter
or
Spectrum Analyzer
CX65105
Evaluation Board
Power Supply
Input Output
Figure 12. CX65105 Evaluation Board Testing Configuration
SOLDER MASK BOTTOMCOPPER BOTTOM
R.20 (8X)
7.875 ± 0.075
7.875 ± 0.075
1.91 (2X) 1.91 (2X)
0.61 (12X)
0.81 (12X)
R 2.5
4
The bottom solder mask thickness = 0.063 maximum
All measurements are in millimeters
3.94
3.94
1.65 (2X)
3.99
3.99
3.30 (2X)
1.65 (2X)
3.30 (2X)
1.45 ± 0.10
1.955 ± 0.155
0.51 ± 0.05
8.385 ± 0.125
8.385 ± 0.125
Pin 1
Pin 2
Pin 3
Pin 7
Pin 8
Pin 6
Pin 5
Pin 4
DETAIL A
SEE DETAIL A
Note: pin 1 connects to ground
Pin 9
C1201
Figure 9. CX65105 8-Pin LCC Package Dimensions
DATA SHEET • CX65105
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
8 October 15, 2004 • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • 101476F
AB
A
B
B
A
1.75 ± 0.10
8o Max 5o Max
∅1.50 ± 0.25
2.00 ± 0.10
4.00 ± 0.10
12.00 ± 0.10
16.00 +0.30/-0.10
7.50 ± 0.10
0.318 ± 0.013
8.89 ± 0.10 8.88 ± 0.10 2.14 ± 0.10
∅1.50± 0.10
Pin #1
C1221
Notes:
1. Carrier tape: black conductive polystyrene.
2. Cover tape material: transparent conductive PSA.
3. All measurements are in millimeters.
Figure 10. CX65105 8-Pin LCC Tape and Reel Dimensions
DATA SHEET • CX65105
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
101476F • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 15, 2004 9
Ordering Information
Model Name Manufacturing Part Number Evaluation Kit Part Number
CX65105 1700-2200 MHz Linear Power Amplifier CX65105-11 TW10-D842
Copyright © 2001, 2002, 2004, Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products. These materials are provided by Skyworks as a service to its customers and may be
used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials. Skyworks may make changes to its documentation, products,
specifications and product descriptions at any time, without notice. Skyworks makes no commitment to update the information and shall have no responsibility whatsoever for conflicts,
incompatibilities, or other difficulties arising from future changes to its documentation, products, specifications and product descriptions.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by or under this document. Except as may be provided in Skyworks Terms and Conditions of
Sale for such products, Skyworks assumes no liability whatsoever in association with its documentation, products, specifications and product descriptions.
THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED OR OTHERWISE, RELATING TO SALE AND/OR USE OF SKYWORKS PRODUCTS
INCLUDING WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER
INTELLECTUAL PROPERTY RIGHT. SKYWORKS FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN
THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST
REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THESE MATERIALS WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications. Skyworks customers using or selling Skyworks products for use in such applications do so at their
own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale.
The following are trademarks of Skyworks Solutions, Inc.: Skyworks™, the Skyworks logo, and Breakthrough Simplicity™. Product names or services listed in this publication are for identification
purposes only, and may be trademarks of Skyworks or other third parties. Third-party brands and names are the property of their respective owners. Additional information, posted at
www.skyworksinc.com, is incorporated by reference.
