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DATA SHEET
CX65104: 700 - 1000 MHz Linear Power Amplifier
Applications
* AMPS/CDMA/TDMA/GSM * Repeaters * WLL and ISM bands * Mobile radio * Paging * Telematics
Description
Skyworks CX65104 Power Amplifier (PA) is a fully matched, 8-pin Leadless Chip Carrier (LCC) surface mount module, developed for cellular, Wireless Local Loop (WLL), and Industrial, Scientific, Medical (ISM) applications. This small, power-efficient PA has a full 700 to 1000 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 CX65104 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. Figure 1 shows a functional block diagram for the CX65104. The device package and pinout are shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1.
Features
* Typical POUT of 31 dBm * High linearity * Low power consumption * Single +5 V supply * 8-pin LCC 8 x 8 mm package
VCC1
8
VCC2
4
Driver Amp Bias
Power Amp Bias
RFIN
2
Input Match
PA
Interstage Match
PA
Output Match
6
RFOUT
GND
1, 3, 5, 7
C1220a
Figure 1. CX65104 Functional Block Diagram
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DATA SHEET * CX65104
GND RFIN GND
1 2 3 4
VCC1
8 7 6 5 GND RFOUT GND
VCC2
S385
Figure 2. CX65104 Pinout- 8-Pin LCC Package (Top View)
Table 1. CX65104 Signal Descriptions
Pin # 1 2 3 4 GND RFIN GND VCC2 Name Ground RF input Ground Supply voltage Description Pin # 5 6 7 8 GND RFOUT GND VCC1 Name Ground RF output Ground Supply voltage Description
Technical Description
The CX65104 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 CX65104 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.
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 CX65104 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 CX65104 are illustrated in Figures 3 through 8. Figure 9 shows the package dimensions for the 8-pin CX65104 LCC and Figure 10 provides the tape and reel dimensions.
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
Electrostatic Discharge (ESD) Sensitivity
The CX65104 is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions.
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DATA SHEET * CX65104
Table 2. CX65104 Absolute Maximum Ratings
Parameter RF input power Supply voltage Case operating temperature Storage temperature PIN VCC TC TST -40 -55 Symbol Min Typical Max 10 8.5 +85 +125 Units dBm V C 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. CX65104 Recommended Operating Conditions
Parameter Supply voltage Operating frequency VCC FO 700 Symbol Min Typical 5 900 1000 Max Units V MHz
Table 4. CX65104 Electrical Characteristics (VCC = 5.0 V, Frequency = 900 MHz, TC = 25 C, unless otherwise noted)
Parameter Analog Inputs Frequency range Quiescent current Small signal gain Output power Efficiency Noise Figure (NF) Output IP3 IQ G POUT PAE NF OIP3 Two tones with 100 kHz spacing, PIN = -5 dBm per tone f = 881.5 MHz, 750 kHz offset 37 PIN = -15 dBm PIN = 3 dBm PIN = 3 dBm 27 29.5 35 700 900 75 29 31.0 39 4 42 5 1000 100 MHz mA dB dBm % dB dBm Symbol Test Conditions Min Typical Max Units
POUT @ ACPR = -45 dBc
POUT_ACPR
23
25
dBm
Note: The above specifications apply only to the 900 MHz operating frequency.
33 32
41 39 37
-30C
Pout (dBm)
31
PAE (%)
35 33 31 29 27
-30C 25C 85C
30 29 28 27 0 1 2 3 4 5
25C 85C
0
1
2
3
4
5
Pin (dBm)
Pin (dBm)
Figure 3. Typical POUT vs PIN Over Temperature
Figure 4. Typical PAE vs PIN Over Temperature
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DATA SHEET * CX65104
6 5
50
40
OIP3 (dBm)
4
NF (dB)
-30C
30
-30C 25C
3 2 1 0 750 800 850 900 950 1000
25C 85C
20
85C
10
0 750 800 850 900 950 1000
Freq (MHz)
Freq (MHz)
Figure 5. Typical Noise Figure vs Frequency Over Temperature
Figure 6. Typical OIP3 vs Frequency Over Temperature
31
Small Signal Gain (dB)
30 29
-30C
28 27 26 25 750 800 850 900 950 1000
25C 85C
35.00 30.00 25.00 20.00 15.00 10.00 5.00 0.00 750 800 850 900 950 1000
Freq (MHz)
Pout (dBm)
-30C 25C 85C
Freq (MHz)
Figure 7. Typical Small Signal Gain vs Frequency Over Temperature
Figure 8. Typical POUT vs Frequency Over Temperature
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DATA SHEET * CX65104
1.955 0.155
1.45 0.10
Pin 8
Pin 1
Pin 7
8.385 0.125
Pin 2
7.875 0.075
Pin 6
Pin 3
Pin 5
Pin 4
8.385 0.125
0.51 0.05
7.875 0.075
3.30 (2X) 1.65 (2X) 3.30 (2X) 0.81 (12X)
DETAIL A
Note: pin 1 connects to ground
R.20 (8X) 3.99 3.94
Pin 9
R 2.54
1.91 (2X)
1.91 (2X)
SEE DETAIL A
0.61 (12X) 1.65 (2X) 3.99
3.94
COPPER BOTTOM
The bottom solder mask thickness = 0.063 maximum All measurements are in millimeters
SOLDER MASK BOTTOM
C1201
Figure 9. CX65104 8-Pin LCC Package Dimensions
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DATA SHEET * CX65104
12.00 0.10 1.50 0.10 2.00 0.10
4.00 0.10
B
Pin #1
1.75 0.10
A
A
7.50 0.10
16.00 +0.30/-0.10
B
1.50 0.25
8o Max 0.318 0.013
5o Max
8.89 0.10
8.88 0.10
2.14 0.10
A
Notes: 1. Carrier tape: black conductive polycarbonate or polystyrene. 2. Cover tape material: transparent conductive PSA. 3. All measurements are in millimeters.
B
C1221
Figure 10. CX65104 8-Pin LCC Tape and Reel Dimensions
Evaluation Board Description
Skyworks CX65104 Evaluation Board is used to test the performance of the CX65104 PA. The Evaluation Board schematic diagram is shown in Figure 11. The schematic shows the basic design of the board for the 700 to 1000 MHz range. Figure 12 provides the Evaluation Board assembly diagram. Figure 13 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 CX65104 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 F, and 4.7 F) are required on the VCC1 (pin 8) supply input. The same three capacitors are also required on the VCC2 (pin 4) supply input. All three capacitors should be placed in parallel between the supply line and ground. See Figure 11 for a detailed diagram.
4. VCC1 (pin 8) and VCC2 (pin 4) may be connected together at the supply. 5. 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 load. Testing Procedure Use the following procedure to set up the CX65104 Evaluation Board for testing. Refer to Figure 14 for guidance: 1. Connect a +5.0 V supply voltage to VCC1 and VCC2. If available, enable the current limiting function of the power supply to 1.0 A. 2. Connect a signal generator to the RF signal input port. Set it to the desired RF frequency at a power level of 3 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 CX65104 Evaluation Board can be permanently damaged.
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DATA SHEET * CX65104
+5 V C1 4.7 F
VCC1 8 1
C2 0.01 F
T1 50 RF in microstrip
7
T2 50 microstrip RF out
RFIN
2 3 4 VCC2
C3 0.01 F Pin 9 Package Base
6 5
RFOUT
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.
C4 4.7 F +5 V
C1237
Figure 11. Evaluation Board Schematic, 700 MHz to 1000 MHz
8X8 PA EVALUATION BD. C2 C1
J1 (RF In)
C3
C4
J2 (RF Out)
VCC1
VCC2
GND
GND
GND
J3
Figure 12. Evaluation Board Assembly Diagram
GND
C1252
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DATA SHEET * CX65104
Layer 1: Top - Metal
Layer 2: Inner Traces
Layer 3: Solid Ground Plane
C1253
Figure 13. Evaluation Board Layer Detail
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DATA SHEET * CX65104
Power Supply
Signal Generator
Input
CX65104 Evaluation Board
Output
Power Meter or Spectrum Analyzer
C1240
Figure 14. CX65104 Evaluation Board Testing Configuration
Ordering Information
Model Name CX65104 700-1000 MHz Linear Power Amplifier Manufacturing Part Number CX65104-11 TW10-D832 Evaluation Kit Part Number
Copyright (c) 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.: SkyworksTM, the Skyworks logo, and Breakthrough SimplicityTM. 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.
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