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DATA SHEET
SKY65146: 3.5 V Broadband MCM Power Amplifier 806-849 MHz
Applications
G G G G G
Block Diagram
VD4 (28) VD3 (8) VD2 (22)
iDEN(R) (806-825 MHz) TETRA (806-825 MHz) TDMA (824-849 MHz) AMPS (824-849 MHz) Wireless Local Loop (WLL)
VREG (1)
CMOS CONTROLLER CIRCUIT
RF IN (5)
INPUT MATCH
PA 1
Features
G G G G G G G G G G G
INTER STAGE MATCH 1
PA 2
INTER STAGE MATCH 2 OUTPUT STAGE MODULE
OUTPUT MATCH
RF OUT (15)
GaAs HBT IC
Low voltage positive bias supply (3.5 V) High gain 39 dB, high power: PSAT 35.6 dBm High efficiency: PAE 51% Good linearity Dual mode operation Large dynamic range 28-pin LCC package (10 x 13.97 x 1.45 mm) Internal RF match Power down control Available on tape and reel Available lead (Pb)-free and RoHS-compliant
Package Diagram
GND GND GND
2
VD4
NC
7
6
5
NC
4
3
1 28 GND 27 GND 26 GND 25 GND 24 GND 23 GND 22 RFOUT
VREG 8 NC 9 NC 10 GND 11 RFIN 12 GND 13
Description
The SKY65146 is a fully matched 28-pin surface mount multi-chip module (MCM) amplifier designed for Private Mobile Radio, Wireless Local Loop, and TDMA/AMPS mobile units operating in the 806-849 MHz cellular bandwidth. Microwave Monolithic Integrated Circuits (MMICs), comprised of Gallium Arsenide (GaAs) and Si CMOS, contain all active circuitry in the module, which includes on-board bias circuitry as well as the interstage matching circuit. The input and output match is realized off-chip within the module package to optimize efficiency and high power performance (P3 dB_sat 35.6 dBm) into a 50 load. Primary bias to the SKY65146 can be supplied directly from a single cell lithiumion or other suitable battery with a nominal output of 3.5 V. No external supply side switch is needed as typical "off" leakage is a few microamperes with full primary voltage supplied from the battery.
NC 14
15 16 17 18 10 20 21
VD3
NC
NC
GND
GND
The ICs are manufactured on an advanced InGaP HBT process and on a silicon CMOS process, providing for all positive voltage DC supply operation while maintaining high efficiency and good linearity. The module can operate over the temperature range of -40 C to 85 C. A populated evaluation board is available upon request.
NEW
Skyworks offers lead (Pb)-free, RoHS (Restriction of Hazardous Substances)-compliant packaging.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200810 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * September 8, 2008
GND
NC
VD2
1
DATA SHEET * SKY65146
Electrical Specifications
VCC (VD) = 3.5 V, VREG = 2.75 V, Frequency = 815 MHz, TC = 25 C, unless otherwise specified.
Parameter Frequency range Gain Power gain Input VSWR Saturated output power Power added efficiency Current @ PSAT Quiescent current Harmonic Levels Symbol F lS21l Gp lS11l P3 dB SAT PAE ICC SAT ICCQ 2FO 3FO 4FO RxBN Small signal PO = 29 dBm Small signal Gain Comp < 3 dB PO = P3 dB SAT PO = P3 dB SAT No RF signal PO < P3 dB SAT PO < P3 dB SAT PO < P3 dB SAT PO < 29 dBm CW Output VSWR = 10:1 PO < 29 dBm Junction to case 15:1 19 6.8 270 35.5 12 35.1 47 Condition Min. 806 38.7 38.7 17 35.6 51 2 329 -37 -60 -80 -85 370 dBm % A mA dBc dBc dBc dBm/Hz 40 Typ. Max. 825 Unit MHz dB dB
Noise power in Rx band FC + 30 MHz, BW = 18 kHz Noise figure Stability (spurious output) Ruggedness - no damage Thermal resistance
NF S Ru JC
8 -36
dB dBm VSWR C/W
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DATA SHEET * SKY65146
Recommended Operating Conditions
Parameter Supply voltage Regulation voltage Operating frequency Continuous RMS output power Operating case temperature Symbol VCC VREG F PoRMS TC -40 Conditions Min. 3 2.65 806 29 +25 Typ. 3.5 2.75 Max. 4.4 2.85 849 31 +85 Unit V V MHz dBm C
Absolute Maximum Ratings
Characteristic RF input power (PIN) Supply voltage (VCC) Regulated supply voltage (VREG) Operating case temperature (TC) Storage temperature(TST) Junction temperature (TJ) Value 11 dBm(1) 6.9 V(2) VCC V (3) -40 C to +85 C -55 C to +125 C 150 C
CAUTION: Although this device is designed to be as robust as possible, ESD (Electrostatic Discharge) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions must be employed at all times.
1. For pulsed operation with duty cycle < 25%. 2. When amplifier is biased off (VREG = 0 V). 3. Voltage on VREG pin may not exceed the applied VCC voltage. Performance is guaranteed only under the conditions listed in the specifications table and is not guaranteed under the full range(s) described by the Absolute Maximum specifications. Exceeding any of the absolute maximum/minimum specifications may result in permanent damage to the device and will void the warranty. Each absolute maximum rating listed is an individual parameter. Biasing and driving the amplifier with more than one absolute maximum rating listed may result in permanent damage to the device. Exposure to maximum rating conditions for extended periods may reduce device reliability.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200810 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * September 8, 2008
3
DATA SHEET * SKY65146
Typical Performance Data
VCC (VD) = 3.5 V, VREG = 2.75 V, Frequency = 815 MHz, TC = 25 C, unless otherwise specified.
-40 C 42 25 C 85 C 42 3.0 V 3.5 V 4.0 V 4.5 V
40 40
Gain (dB)
Gain (dB)
38 36 805
38
36
34 810 815 820 825
-40
-15
10
35
60
85
Frequency (MHz)
Temperature (C )
Gain vs. Frequency Across Temperature
-40 C 43 41 39 25 C 85 C 43 41 39
Gain vs. Temperature Across VCC
806 MHz 815.5 MHz 825 MHz
Gain (dB)
Gain (dB)
37 35 33 31
37 35 33 31
23
28
33
38
23
25
27
29
31
33
35
37
POUT (dBm)
POUT (dBm)
Gain vs. POUT Across Temperature
3.0 V 43 41 39 37 35 33 31 -19 -20 805 3.5 V 4.0 V 4.5 V -15 -16
Gain vs. POUT Across Frequency
-40 C 25 C 85 C
lS11l (dB)
23 25 27 29 31 33 35 37
Gain (dB)
-17 -18
810
815
820
825
POUT (dBm)
Frequency (MHz)
Gain vs. POUT Across VCC
lS11l vs. Frequency Across Temperature
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DATA SHEET * SKY65146
Typical Performance Data
VCC (VD) = 3.5 V, VREG = 2.75 V, Frequency = 815 MHz, TC = 25 C, unless otherwise specified.
-40 C 2.4 25 C 85 C 2.4 806 MHz 815.5 MHz 825 MHz
1.9
1.9
ICC (A)
ICC (A)
22 24 26 28 30 32 34 36 38
1.4
1.4
0.9
0.9
0.4
0.4
22
24
26
28
30
32
34
36
38
POUT (dBm)
POUT (dBm)
ICC vs. POUT Across Temperature
3.0 V 2.4 3.5 V 4.0 V 4.5 V 0.43
ICC vs. POUT Across Frequency
3.0 V 3.5 V 4.0 V 4.5 V
1.9 0.38 1.4
ICCQ (A)
0.33 0.28 22 24 26 28 30 32 34 36 38 -40
ICC (A)
0.9
0.4
-15
10
35
60
85
POUT (dBm)
Temperature (C)
ICC vs. POUT Across VCC
-40 C 8 25 C 85 C 8
ICCQ vs. Temperature Across VCC
3.0 V 3.5 V 4.0 V 4.5 V
7
7
NF (dB)
6
NF (dB)
6 5 805 810 815 820 825 5 -40 -15 10 35 60 85
Frequency (MHz)
Temperature (C)
NF vs. Frequency Across Temperature
NF vs. Temperature Across VCC
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200810 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * September 8, 2008
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DATA SHEET * SKY65146
Typical Performance Data
VCC (VD) = 3.5 V, VREG = 2.75 V, Frequency = 815 MHz, TC = 25 C, unless otherwise specified.
806 MHz 58 48 815.5 MHz 825 MHz 58 48 -40 C 25 C 85 C
PAE (%)
28 18 8
PAE (%)
20 22 24 26 28 30 32 34 36 38
38
38 28 18 8 20 22 24 26 28 30 32 34 36 38
POUT (dBm)
POUT (dBm)
PAE vs. POUT Across Frequency
3.0 V 58 44 48 42 40 38 36 8 20 22 24 26 28 30 32 34 36 38 34 3.5 V 4.0 V 4.5 V
PAE vs. POUT Across Temperature
-10 dBm -8.5 dBm -9.5 dBm -8 dBm -9 dBm
PAE (%)
38 28 18
2nd Harmonics (dB)
POUT (dBm)
-40
-15
10
35
60
85
PAE vs. POUT Across VCC
-10 dBm -8.5 dBm 52 49 -9.5 dBm -8 dBm -9 dBm
Temperature (C)
2nd Harmonics vs. Temperature Across PIN
-10 dBm -8.5 dBm 44 42 40 38 36 34 805 -9.5 dBm -8 dBm -9 dBm
2nd Harmonics (dB)
46 43 40 37 34 3.00
2nd Harmonics (dB)
3.25
3.50
3.75
4.00
4.25
4.50
810
815
820
825
VCC (V)
Frequency (MHz)
2nd Harmonics vs. VCC Across PIN
2nd Harmonics vs. Frequency Across PIN
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DATA SHEET * SKY65146
Typical Performance Data
VCC (VD) = 3.5 V, VREG = 2.75 V, Frequency = 815 MHz, TC = 25 C, unless otherwise specified.
-10 dBm -8.5 dBm 61 60 59 58 57 56 -40 57 805 -9.5 dBm -8 dBm -9 dBm 61 -10 dBm -8.5 dBm -9.5 dBm -8 dBm -9 dBm
3rd Harmonics (dB)
3rd Harmonics (dB)
60
59
58
-15
10
35
60
85
810
815
820
825
Temperature ( C )
Frequency (MHz)
3rd Harmonics vs. Temperature Across PIN
-10 dBm -8.5 dBm 62 -9.5 dBm -8 dBm -9 dBm 84 82
3rd Harmonics vs. Frequency Across PIN
-10 dBm -8.5 dBm -9.5 dBm -8 dBm -9 dBm
3rd Harmonics (dB)
4th Harmonics (dB)
3.25 3.50 3.75 4.00 4.25 4.50
61
80 78 76 74 -40
60
59
58 3.00
-15
10
35
60
85
VCC (V)
Temperature (C)
3rd Harmonics vs. VCC Across PIN
-10 dBm -8.5 dBm 83 -9.5 dBm -8 dBm -9 dBm
4th Harmonics vs. Temperature Across PIN
-10 dBm -8.5 dBm 82 -9.5 dBm -8 dBm -9 dBm
4th Harmonics (dB)
805 810 815 820 825
4th Harmonics (dB)
81
80
79
78
77
75
76 3.00
3.25
3.50
3.75
4.00
4.25
4.50
Frequency (MHz)
VCC (V)
4th Harmonics vs. Frequency Across PIN
4th Harmonics vs. VCC Across PIN
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200810 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * September 8, 2008
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DATA SHEET * SKY65146
Typical Performance Data
VCC (VD) = 3.5 V, VREG = 2.75 V, Frequency = 815 MHz, TC = 25 C, unless otherwise specified.
50 40 30 S11 S21 S22 36.0 35.5 35.0
P1 dB (dBm)
Sij (dB)
20 10 0 -10 -20 0.70 0.75 0.80 0.85 0.90 0.95 1.00
34.5 34.0 33.5 33.0 32.5 32.0 800 820 840 860 880 900 920 940
Frequency (GHz)
Frequency (MHz)
S-Parameters vs. Frequency
806 MHz 850 MHz 40 39 38 37 50 815.5 MHz 890 MHz 825 MHz 930 MHz
P1 dB vs. Frequency
55
PAE @ P1 dB (%)
45 40 35 30 800 820 840 860 880 900 920 940
OIP3 (dBm)
36 35 34 33 32 31 30 16 18 20 22 24 26 28
Frequency (MHz)
Power Out/Tone (dBm)
PAE @ P1 dB vs. Frequency
OIP3 vs. POUT/Tone Across Frequency Tone Spacing =1 MHz
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DATA SHEET * SKY65146
Application Circuit Notes
Center Ground. It is extremely important that the device paddle be sufficiently grounded for both thermal and stability reasons. Multiple small vias are acceptable and will work well under the device if solder migration is an issue. VD2 (Pin 1). Supply voltage for output (final) stage collector bias (typically 3.5 V). Bypassing of VD3 is accomplished with C2 and C3 and should be placed in the approximate location shown on the Evaluation Board, but placement is not critical. Ground (Pins 2, 3, 6, 11, 13, 16, 19, 20, 23-28). Attach all ground pins to the RF ground plane with the largest diameter and lowest inductance via that the layout will allow. Multiple small vias are also acceptable and will work well under the device if solder migration is an issue. No Connect (Pins 4, 5, 9, 10, 14, 17, 18, 21). The pins are open and may or may not be connected to ground. VD4 (Pin 7). Supply voltage for base bias circuitry to all stages (typically 3.5 V). Bypassing of VD3 is accomplished with C1 which should be placed in the approximate location shown on the Evaluation Board, but placement is not critical. VREG (Pin 8). VREG is the regulated bias enable control voltage to the silicon CMOS controller, 0.0 V = Off, 2.75 V = On. Nominal "On" operating range is between 2.65 VDC and 2.85 VDC. VREG set to 0 VDC will force the amplifier into standby mode. RF_IN (Pin 12). Amplifier RF Input Pin. ZO = 50 . The module includes an onboard internal DC blocking capacitor. All impedance matching is provided internal to the module. VD3 (Pin 15). Supply voltage for driver collector bias (typically 3.5V). Bypassing of VD3 is accomplished with C4 and C5 which should be placed in the approximate location shown on the Evaluation Board, but placement is not critical. RF_OUT (Pin 22). Amplifier RF Output Pin. ZO = 50 . The module includes an onboard internal DC blocking capacitor. All impedance matching is provided internally to the module.
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. Please refer to Skyworks' solder reflow application note, available at www.skyworksinc.com, for instructions on mounting the SKY65146 to a printed circuit board. 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.
Electrostatic Discharge (ESD) Sensitivity
The SKY65146 is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions.
Theory of Operation
The SKY65146 is a fully matched 3-stage GaAs HBT power amplifier module consisting of on-chip interstage matching circuits and bias circuitry. The input and output match is realized off-chip, but within the module package. The amplifier employs series feedback on the first and second stages to provide for high gain and stability and power of up to 4 W. The module includes a silicon CMOS controller circuit to provide a regulated bias enable control, VREG (0-2.75 V) for amplifier On/Off operation. In off operation, supply current is a few microamperes with VREG = 0 V. The module operates with all positive DC voltages while maintaining high efficiency and good linearity. The nominal operating voltage is 3.5 V for maximum power, but can be operated at slightly lower voltages for other mobile applications.
Application Circuit
VD2 C2 10 F VD4 C1 10 F VREG 8 NC 9 NC 10 11 RF_IN 50 12 13 NC 14 15 VD3 C4 10 F C5 1000 pF 16 17 NC 18 NC 19 20 21 NC 7 6 NC 5 NC 4 3 2 1 28 27 26 C3 1000 pF
SKY65146
25 24 23 22 50 RF_OUT
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DATA SHEET * SKY65146
Pin Assignments
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name VD2 GND GND N/C N/C GND VD4 VREG N/C N/C GND RFIN GND N/C VD3 GND N/C N/C GND GND N/C RFOUT GND GND GND GND GND GND Description Supply voltage for output (final) stage collector bias (typically 3.5 V) Low inductance ground connection
Evaluation Board
VCTL (NC) GND VREG VD4 VD3 VD2 VD1 (NC) C2 J3 RF In U1 C1 SKY65146 C3 Pin 1 J2 RF Out C5 C4 GND
Low inductance ground connection No connect No connect Low inductance ground connection Supply voltage for base bias circuitry to all stages (typically 3.5 V) Regulated bias enable control voltage, 0.0 = Off, 2.75 V = On No connect No connect Low inductance ground connection 806-849 MHz RF input signal 50 Low inductance ground connection No connect Supply voltage for driver collector bias (typically 3.5 V) Low inductance ground connection No connect No connect Low inductance ground connection Low inductance ground connection No connect 806-849 MHz RF output signal 50 Low inductance ground connection Low inductance ground connection Low inductance ground connection Low inductance ground connection Low inductance ground connection Low inductance ground connection
J1
SKY65146 Test Fixture TW16-D390-
Recommended Solder Reflow Profiles
Refer to the "Recommended Solder Reflow Profile" Application Note.
Tape and Reel Information
Refer to the "Discrete Devices and IC Switch/Attenuators Tape and Reel Package Orientation" Application Note.
Center attachment pad must have a low inductance and low thermal resistance connection to the customer's printed circuit board ground plane.
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DATA SHEET * SKY65146
Evaluation Board Description
The Skyworks SKY65146 Evaluation Board is used to test the performance of the SKY65146 power amplifier module. 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 SKY65146 power amplifier module 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 amplifiers. As such, design the connection to the ground pad to dissipate the maximum wattage produced to the circuit. Multiple vias to the grounding layer are required. NOTE: Junction temperature (TJ) of the device increases with a poor connection to the slug and ground. This reduces the lifetime of the device.
Capacitors C6 and C7 are shown on EVB, but are not used.
Evaluation Board Test Procedure
Step 1. Connect RF test equipment to Amplifier input/output SMA connectors. Step 2. Connect DC ground. Step 3. Connect all VCC (VD) lines to 3.5 V supply and VREG to 2.75 V. Verify the ICQ current is approximately 329 mA. Step 4. Apply RF signal data -30 dBm level and observe that the output level is approximately 8 dBm or the gain of the device is approximately 38 dB. NOTE: It is important that the VD2, VD3, and VD4 voltage source be adjusted such that 3.5 V is measured at the board. The high collector currents will drop the collector voltage significantly if long leads are used. Adjust the bias voltage to compensate.
Bill of Material for Evaluation Board
Part 1 2 3 4 5 ID C1 C2 C3 C4 C5 QTY 1 1 1 1 1 Size 1206 1206 0402 1206 0402 Value 10 10 1000 10 1000 Units F F pF F pF Manufacturer AVX AVX Murata AVX Murata Product Number TAJA106M006R TAJA106M006R GRM155R71H102KA01 TAJA106M006R GRM155R71H102KA01
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DATA SHEET * SKY65146
Evaluation Board Stack-Up
Cross Section Name Thickness (mm) Material
L1 Lam1 L2 Lam2 L3 Lam3 L4 0.025 0.400 0.025 0.600 0.025 0.400 0.025 Cu Rogers 4003 Cu FR4 Cu FR4 Cu
Package Outline
r
- 3.38 - 4.00 -
10.04 Pin 1 Indicator
Top
14.04
4.00 -
Branding Specifications
1.45 0.1 4X 3.81 4X 2.54 4X 1.27
Mark Pin 1 Identifier
Pin 28
0
Manufacturing Part Number Revision Number
28X SMT Pad
SKY65146 EXXXXX.XX YYWW MX
(0.2x 45) Pin 1 Indicator See Detail A Pin 1 See Detail B
Lot Number YY = Manufacture Year WW = Week Packaged Sealed MX = Country Code
C 12X 1 12X 2 12X 3 12X 4 0 4X 1.27 4X 2.54 4X 3.81
14X 6.873 14X 4.873 2.5 1.5 0.5 54X Solder Mask Openings See Detail B
1.163 0.05 (0.147) 0.875 0.02X 45 0.875 R 0.05 Max. Detail A Units = mm. Detail B 0.875 0.875 R 0.05 Max. 1.016 0.05 0.762 0.05 Detail C (R 0.381) 0.889 0.05 (R 0.508)
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DATA SHEET * SKY65146
Recommended Footprint
10.34 mm 14X 0.762 mm Pin 28
Solder Mask
10.44 mm Pin 28 0.20 X 45 18X 2.5 mm 28X 0.862 mm 28X 1.286 mm 14X 1.186 mm Pin 1
Pin 1
12X 3 mm 14.34 mm
12X 1 mm 12X 2 mm
14.44 mm C L 1.27 mm Typ.
1.27 mm Typ.
C L
0.6 mm
12X 4 mm
0.875 mm Typ. R0.431 mm Typ.
0.25 mm Typ. Package Outline R0.381 mm Typ. 0.25 mm Typ. 0.875 mm Typ. C L 18X 1.5 mm 18X 0.5 mm
Thermal via array O0.3 mm on 0.7 mm pitch additional vias in common ground pad will improve thermal performance
C L 0.6 mm
Thermal vias should be tented and filled with solder mask 30-35 m copper plating recommended.
Stencil Pattern
10.34 mm 18X 2.5 mm 28X 28X 0.762 mm 1.186 mm
Pin 28 0.20 X 45 Pin 1
12X 3 mm 12X 1 mm 12X 2 mm 12X 4 mm 0.875 mm Typ. Stencil aperture size of 80 to 100% of the module/pkg 0.875 mm solder mask Typ. openings. Package Outline C L 18X 1.5 mm 18X 0.5 mm C L 1.27 mm 14.34 mm Typ.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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DATA SHEET * SKY65146
Ordering Information
Model Name SKY65146: 3.5 V Broadband MCM Power Amplifier 806-849 MHz Manufacturing Part Number SKY65146-21 (Pb-free package) Evaluation Kit Part Number TW16-D390
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