Skyworks CX77140 Pa module for cdma / amps (824-849 mhz) Datasheet

DATA SHEET
CX77140: PA Module for CDMA / AMPS (824–849 MHz)
Applications
• Digital cellular (CDMA)
• Analog cellular (AMPS)
• Wireless local loop (WLL)
Features
• Low voltage positive bias supply
- 3.2 V to 4.2 V
• Low VREF
- 2.85 V, nominal
• Good linearity
• High efficiency
• Dual mode operation
• Large dynamic range
• 10-pin package
- 4 mm x 4 mm x 1.5 mm
The CX77140 Power Amplifier Module (PAM) is a dual-mode, fully matched, 10-pin surface
mount module developed for Code Division Multiple Access (CDMA) / Advanced Mobile
Phone Service (AMPS) cellular handsets and Wireless Local Loop (WLL) applications. This
small and efficient power amplifier module packs full coverage of the 824–849 MHz
bandwidth into a single compact package. The device meets the stringent IS95 CDMA
linearity requirements up to at least 28 dBm output power, and can be driven to levels
beyond 31 dBm for high efficiency in FM mode operation. A low current digital pin (VCONT)
provides improved efficiency for the low RF power range of operation.
The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains
all active circuitry in the module. The MMIC contains on-board bias circuitry, as well as input
and interstage matching circuits. Output match is realized off-chip and within the module
package to optimize efficiency and power performance into a 50 Ω load. This device is
manufactured with Skyworks’ GaAs Heterojunction Bipolar Transistor (HBT) process that
provides for all positive voltage DC supply operation while maintaining high efficiency and
good linearity. Primary bias to the CX77140 is supplied directly from a three-cell Ni-Cd, a
single-cell Li-Ion, or other suitable battery with an output in the range of 3.2 to 4.2 volt.
Power down is accomplished by setting the voltage on the low current reference pin to zero
volts. No external supply side switch is needed as typical “off” leakage is a few
microamperes with full primary voltage supplied from the battery.
• Power down control
• Low power-state control
• InGaP
• IS95/CDMA2000
Figure 1. Functional Block Diagram
Skyworks Solutions, Inc. • Phone [781] 376-7000 • fax [781] 376-3100 • [email protected] • www.skyworksinc.com
101980A • Skyworks Proprietary and Confidential Information • Products and product Information are subject to change without notice • December 3, 2003
1
DATA SHEET • CX77140
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
Electrical Specifications
The following tables list the electrical characteristics of the
CX77140 Power Amplifier Module. Table 1 lists the absolute
maximum ratings. Table 2 specifies the recommended operating
conditions for the CX77140 to achieve the electrical performance
under the recommended operating conditions listed in Table 4.
Table 3 is a power range truth table.
Table 1. Absolute Maximum Ratings (1)
Parameter
Symbol
Minimum
Nominal
Maximum
Unit
4.0
7.0
dBm
RF Input Power
PIN
—
Supply Voltage
VCC
—
3.4
6.0
Volts
Reference Voltage
VREF
—
2.85
3.1
Volts
Case Operating Temperature
TC
–30
25
+110
°C
Case Storage Temperature
TSTG
–55
—
+125
°C
(1)
No damage assuming only one parameter is set at limit at a time with all other parameters set at or below nominal value.
Table 2. Recommended Operating Conditions
Parameter
Symbol
Mode Input Impedance >2.5 kΩ
Nominal
Maximum
Unit
3.4
4.2
Volts
VCC
3.2
PA On
VREF
2.75
2.85
2.95
PA Off
VREF
—
< 0.5
—
High Bias Mode
VCONT
0.0
0.5
1.0
Low Bias Mode
VCONT
2.0
2.5
3.0
Supply Voltage
Reference Voltage
Minimum
Volts
Volts
Operating Frequency
FO
824.0
836.5
849.0
MHz
Case Operating Temperature
TC
–30
—
+85
°C
Table 3. Power Range Truth Table
VREF
VCONT
Range
High Power
Power Mode
2.85 V
0.5 V
16 dBm to 28.0 dBm
Low Power
2.85 V
2.5 V
≤ 16 dBm
Shut Down
0.0 V
0.0 V
—
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December 3, 2003 • Skyworks Proprietary and Confidential Information • Products and product Information are subject to change without notice • 101980A
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
DATA SHEET • CX77140
Table 4. Electrical Specifications for CDMA / AMPS Nominal Operating Conditions (1)
Characteristics
Symbol
Condition
Minimum
Typical
Maximum
Unit
GLOW
VCONT = 2.5 V
PO = 16 dBm
23.0
26.0
27.0
GHIGH
VCONT = 0.5 V
PO = 28 dBm
27.0
29.0
31.0
GP
VCONT = 0.5 V
PO = 31 dBm
26.5
28.0
30.0
PAELOW
VCONT = 2.5 V
PO = 16 dBm
7.0
8.0
—
PAEHIGH
VCONT = 0.5 V
PO = 28 dBm
37.0
40.0
—
PAEA
VCONT = 0.5 V
PO = 31 dBm
48.0
54.0
—
ICC_LOW
PO = 16 dBm
—
145
150
ICC_HIGH
PO = 28 dBm
—
460
505
IQ_LOW
VCONT = 2.5 V
30
50
65
IQ_HIGH
VCONT = 0.5 V
65
75
120
Reference Current
IREF
—
—
4.5
5.0
mA
Control Current
ICONT
VCONT = 2.5 V
—
0.25
0.7
mA
Total Supply current in Power-down Mode
IPD
VCC = 3.4 V
VREF = 0 V
—
3.0
5.0
µA
ACP1LOW
VCONT = 2.5 V
PO ≤ 16 dBm
—
–49.0
–46.0
ACP1HIGH
VCONT = 0.5 V
PO ≤ 28 dBm
—
–50.0
–48.0
ACP2LOW
VCONT = 2.5 V
PO ≤ 16 dBm
—
–65.0
–59.0
ACP2HIGH
VCONT = 0.5 V
PO ≤ 28 dBm
—
–61.0
–58.5
Second
FO2
PO ≤ 31.0 dBm
—
–35.0
–29.0
Third
F O3
PO ≤ 31.0 dBm
—
–50.0
–35.0
Noise Power in RX Band 869-894 MHz
RxBN
PO ≤ 28.0 dBm
—
–137
–136
Noise Figure
NF
—
—
5.0
—
dB
Input Voltage Standing Wave Ratio (4)
VSWR
—
—
—
2.0:1
—
Stability (Spurious output)
S
5:1 VSWR
all phases
—
—
–60.0
dBc
Ruggedness – No damage (5)
Ru
PO ≤ 28.0 dBm
10:1
—
—
VSWR
Digital Mode
Gain conditions
Analog Mode
Digital Mode
Power Added Efficiency
Analog Mode
Total Supply Current
Quiescent Current
885 kHz offset
Adjacent Channel Power (2)(3)
1.98 MHz offset
Harmonic Suppression
VCC = +3.4 V, VREF = +2.85 V, Freq = 836.5 MHz, TC = +25 °C, unless otherwise specified.
(2)
ACP is specified per IS95 as the ratio of the total in-band power (1.23 MHz BW) to adjacent power in a 30 kHz BW.
(3)
CDMA2000 is configured as DCCH = 9600, SCHO = 9600, PCH (Walsh 0) = –3.75 dB, and Peak-to-Average Ratio (CCDF = 1%) = 4.5 dB.
For CDMA2000, back-off of 0.5 dB output power is required.
For low power mode, VSWR = 2.5:1.
(5)
All phases, time = 10 seconds.
%
mA
mA
dBc
(1)
(4)
dB
dBc
dBm/Hz
Skyworks Solutions, Inc. • Phone [781] 376-7000 • fax [781] 376-3100 • [email protected] • www.skyworksinc.com
101980A • Skyworks Proprietary and Confidential Information • Products and product Information are subject to change without notice • December 3, 2003
3
DATA SHEET • CX77140
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
Table 5. Electrical Specifications for CDMA / AMPS Recommended Operating Conditions (1)
Characteristics
Symbol
28.0
GHIGH
VCONT = 0.5 V
PO = 28 dBm
26.0
32.0
GP
VCONT = 0.5 V
PO = 31 dBm
24.5
31.0
ACP1LOW
VCONT = 2.5 V
PO ≤ 16 dBm
—
–43.5
ACP1HIGH
VCONT = 0.5 V
PO ≤ 28 dBm
—
–44.0
ACP2LOW
VCONT = 2.5 V
PO ≤ 16 dBm
—
–56.0
ACP2HIGH
VCONT = 0.5 V
PO ≤ 28 dBm
—
–56.0
Second
FO2
PO ≤ 31.0 dBm
—
–28.5
Third
F O3
PO ≤ 31.0 dBm
—
–35.0
RxBN
PO ≤ 28.0 dBm
—
–134
dBm/Hz
885 kHz offset
(2)(3)
1.98 MHz offset
dB
dBc
dBc
Noise Figure
NF
—
—
7
dB
Input Voltage Standing Wave Ratio
VSWR
—
—
2.0:1
—
Stability (Spurious output)
S
5:1 VSWR
all phases
—
–60.0
dBc
Ruggedness – No damage (4)
Ru
PO ≤ 28.0 dBm
10:1
—
VSWR
(1)
Per Table 2, unless otherwise specified.
(2)
ACP is specified per IS95 as the ratio of the total in-band power (1.23 MHz BW) to adjacent power in a 30 kHz BW.
(3)
CDMA2000 is configured as DCCH = 9600, SCHO = 9600, PCH (Walsh 0) = –3.75 dB, and Peak-to-Average Ratio (CCDF = 1%) = 4.5 dB.
For CDMA2000, 0.5 dB back-off of output power is required.
(4)
All phases, time = 10 seconds.
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Unit
22.5
Analog Mode
Noise Power in RX Band 869-894 MHz
Maximum
VCONT = 2.5 V
PO = 16 dBm
Gain conditions
Harmonic Suppression
Minimum
GLOW
Digital Mode
Adjacent Channel Power
Condition
December 3, 2003 • Skyworks Proprietary and Confidential Information • Products and product Information are subject to change without notice • 101980A
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
DATA SHEET • CX77140
Characterization Data
The graphs in Figure 2 through Figure 8 illustrate the
characteristics of a typical CX77140 power amplifier designed for
operation in the CDMA/AMPS frequency band (824–849 MHz).
This amplifier was selected by characterizing a group of devices
and choosing a part with average electrical performance for both
nominal and the full range of recommended operating conditions,
including worst case limits.
The graphs illustrate the digital signal characteristics of the
CX77140. Shown are power sweep characteristics for key
performance parameters over temperature and frequency, up to
28 dBm output power. The data was taken up to and including
16 dBm output power with the bias mode control pin setting of
VCONT = 2.5 volts. Beyond 16 dBm output power, the VCONT was set
to 0 volts.
Figure 2. Digital Mode Gain vs. Output Power
Skyworks Solutions, Inc. • Phone [781] 376-7000 • fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • CX77140
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
Figure 3. Primary Bias Current vs. Output Power
Figure 4. Power Added Efficiency vs. Output Power
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December 3, 2003 • Skyworks Proprietary and Confidential Information • Products and product Information are subject to change without notice • 101980A
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
DATA SHEET • CX77140
Figure 5. Adjacent Channel Power for 0.885 MHz Offset vs. Output Power
Figure 6. Adjacent Channel Power for 1.98 MHz Offset vs. Output Power
Skyworks Solutions, Inc. • Phone [781] 376-7000 • fax [781] 376-3100 • [email protected] • www.skyworksinc.com
101980A • Skyworks Proprietary and Confidential Information • Products and product Information are subject to change without notice • December 3, 2003
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DATA SHEET • CX77140
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
Figure 7. Second Harmonic Rejection vs. Output Power
Figure 8. Third Harmonic Rejection vs. Output Power
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PA MODULE FOR CDMA / AMPS (824–849 MHZ)
DATA SHEET • CX77140
Evaluation Board Description
The evaluation board is a platform for testing and interfacing
design circuitry. To accommodate the interface testing of the
CX77140, the evaluation board schematic and diagrams are
included for preliminary analysis and design. Figure 9 shows the
basic schematic of the board for the 824 MHz to 849 MHz range
and Figure 10 shows the layout of the board assembly.
Figure 9. Evaluation Board Schematic
Figure 10. Evaluation Board Assembly Diagram
Skyworks Solutions, Inc. • Phone [781] 376-7000 • fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • CX77140
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
Package Dimensions and Pin Descriptions
The CX77140 is a multi-layer laminate base, overmold
encapsulated modular package designed for surface mount solder
attachment to a printed circuit board. Figure 11 is a mechanical
drawing of the pad layout for this package. Figure 12 shows the
pin names and numbering convention, which starts with pin 1 in
the upper left, as indicated, and increments counter-clockwise
around the package. Figure 13 illustrates typical case markings.
Figure 11. CX77140 Package Dimensional Drawing
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December 3, 2003 • Skyworks Proprietary and Confidential Information • Products and product Information are subject to change without notice • 101980A
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
DATA SHEET • CX77140
procedures recommended by Skyworks, please refer to Skyworks
Application Note: PCB Design and SMT Assembly/Rework,
Document Number 101752. Additional information on standard
SMT reflow profiles can also be found in the JEDEC Standard J–
STD–020B.
Production quantities of this product are shipped in the standard
tape-and-reel format. For packaging details, refer to Skyworks
Application Note: Tape and Reel, Document Number 101568.
Electrostatic Discharge Sensitivity
Figure 12. Pin Configuration and Pin Names (Top View)
The CX77140 is a Class 2 device. Figure 14 lists the Electrostatic
Discharge (ESD) immunity level for each pin of the CX77140
product. The numbers in Figure 14 specify the ESD threshold level
for each pin where the I-V curve between the pin and ground
starts to show degradation.
ESD testing was performed in compliance with MIL-STD-883E
Method 3015.7 using the Human Body Model. If ESD damage
threshold magnitude is found to consistently exceed 2000 volts on
a given pin, this so is indicated. If ESD damage threshold below
2000 volts is measured for either polarity, numbers are indicated
that represent worst case values observed in product
characterization.
Figure 13. Typical Case Markings
Package and Handling Information
Because of its sensitivity to moisture absorption, this device
package is baked and vacuum-packed prior to shipment.
Instructions on the shipping container label must be followed
regarding exposure to moisture after the container seal is broken,
otherwise, problems related to moisture absorption may occur
when the part is subjected to high temperature during solder
assembly.
The CX77140 is capable of withstanding an MSL3/240 °C solder
reflow. Care must be taken when attaching this product, whether
it is done manually or in a production solder reflow environment. 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 240 °C. If the part is manually attached, precaution
should be taken to insure that the part is not subjected to
temperatures exceeding 240 °C for more than 10 seconds. For
details on both attachment techniques, precautions, and handling
Figure 14. ESD Sensitivity Areas (Top View)
Various failure criteria can be utilized when performing ESD
testing. Many vendors employ relaxed ESD failure standards,
which fail devices only after “the pin fails the electrical
specification limits” or “the pin becomes completely nonfunctional”. Skyworks employs most stringent criteria, fails
devices as soon as the pin begins to show any degradation on a
curve tracer.
To avoid ESD damage, both latent and visible, it is very important
that the product assembly and test areas follow the Class-1 ESD
handling precautions listed in Table 5.
Skyworks Solutions, Inc. • Phone [781] 376-7000 • fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • CX77140
PA MODULE FOR CDMA / AMPS (824–849 MHZ)
Table 5. Precautions for Handling GaAs IC-based Products to Avoid Induced Damage
Personnel Grounding
Wrist Straps
Conductive Smocks, Gloves and Finger Cots
Antistatic ID Badges
Facility
Relative Humidity Control and Air Ionizers
Dissipative Floors (less than 109 Ω to GND)
Protective Workstation
Dissipative Table Tops
Protective Test Equipment (Properly Grounded)
Grounded Tip Soldering Irons
Conductive Solder Suckers
Static Sensors
Protective Packaging & Transportation
Bags and Pouches (Faraday Shield)
Protective Tote Boxes (Conductive Static Shielding)
Protective Trays
Grounded Carts
Protective Work Order Holders
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December 3, 2003 • Skyworks Proprietary and Confidential Information • Products and product Information are subject to change without notice • 101980A
Ordering Information
Model Number
Manufacturing
Part Number
CX77140
CX77140
Product Revision
Package
Operating Temperature
4x4LM
–30 °C to +85 °C
Revision History
Revision
Level
Date
Description
A
September 8, 2003
Initial Release
B
December 3, 2003
Revise: Figure 1
References
Application Note: PCB Design and SMT Assembly/Rework, Document Number 101752.
Application Note: Tape and Reel, Document Number 101568
Standard SMT Reflow Profiles: JEDEC Standard J–STD–020B.
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