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PRELIMINARY DATA SHEET
SKY65008: 250 - 2700 MHz Linear, Low Current Power Amplifier Driver
Applications
* AMPS, PCS, DCS, 2.5G, 3G, WCDMA, WLANs * ISM band * Fixed WCS * 802.11b/g WLANs * WiMax
Description
Skyworks SKY65008 is a high performance, ultra-wideband power amplifier driver with superior output power, linearity, low current consumption, and efficiency. The high linearity and superior Adjacent Channel Power Rejection/Adjacent Channel Leakage Ratio (ACPR/ACLR) performance make the SKY65008 ideal for use in the driver stage of infrastucture transmit chains. The SKY65008 is fabricated using Skyworks high reliability InGaP Heterojunction Bipolar Transistor (HBT) technology in the form of a Pb-free, 3-pin, 4 x 4 mm Multi-Chip Module (MCM) package. The device package and pinout are shown in Figure 1. A functional block diagram is provided in Figure 2.
Features
* Wideband frequency range: 250 to 2700 MHz * High efficiency: PAE 48% * High gain: 18 dB * Single DC supply, +3 V * MCM (3-pin, 4 x 4 mm) Pb-free package (MSL3, 250 C per JEDEC J-STD-0-20) Skyworks offers lead (Pb)-free "environmentally friendly" packaging that is RoHS compliant (European Parliament for the Restriction of Hazardous Substances).
1
2
3
1 2 3
RF_IN
GND
RF_OUT
S243
RF_IN
GND
RF_OUT
S587
Figure 1. SKY65008 Pinout - 3-Pin MCM Package (Top View)
Figure 2. SKY65008 Block Diagram
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65008
Electrical and Mechanical Specifications
Signal pin assignments and functional pin descriptions for the SKY65008 are provided in Table 1. The absolute maximum ratings are provided in Table 2, and the recommended operating conditions in Table 3. Electrical characteristics of the SKY65008 are provided in Table 4. The typical performance of the SKY65008 at various operating frequencies is illustrated in Figures 3 through 9. Package dimensions for the 3-pin MCM are shown in Figure 13, and tape and reel dimensions are shown in Figure 14.
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. For details on both attachment techniques, precautions, and handling procedures recommended by Skyworks, please refer to Skyworks Application Note, PCB Design and SMT Assembly/Rework Guidelines for MCM-L Packages, document number 101752. Additional information on standard SMT reflow profiles can also be found in the JEDEC Standard J-STD-020. Production quantities of both package types for this product are shipped in standard tape and reel formats. For packaging details, refer to the Skyworks Application Note, Tape and Reel, document number 101568.
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. The SKY65008 can be used for lead or lead-free soldering. If the part is attached in a reflow oven, the temperature ramp rate should not exceed 5 C per second. Maximum temperature
Table 1. SKY65008 Signal Descriptions
Pin # 1 2 3 RF_IN GND RF_OUT Name
Electrostatic Discharge (ESD) Sensitivity
The SKY65008 is a static-sensitive electronic device. Do not operate or store near strong electrostatic fields. Take proper ESD precautions.
Description RF input Ground RF output
Table 2. SKY65008 Absolute Maximum Ratings (TA = +25 C, unless otherwise noted)
Parameter Supply voltage RF output power Supply current Power dissipation Operating case temperature Storage temperature Junction temperature
Note:
Symbol VCC POUT ICC PD TC TST TJ
Min
Typical
Max 4 23 110 400
Units V dBm mA mW C C C
-40 -55
+85 +125 150
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. SKY65008 Recommended Operating Conditions
Parameter Supply voltage Frequency range VCC F Symbol Min 3.0 250 Typical 3.3 Max 3.6 2700 Units V MHz
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PRELIMINARY DATA SHEET * SKY65008
Table 4. SKY65008 Electrical Characteristics (VCC = 3.3 V, TC = 25 C, input and output load < -8 dB, unless otherwise noted)
Parameter Test Frequency = 900 MHz Small signal gain Output power @ 1 dB compression Output 3rd Order Intercept Point Noise figure Test Frequency = 1960 MHz Small signal gain Output power @ 1 dB compression Output 3rd Order Intercept Point Noise Figure Power-added efficiency Quiescent current Output power @ ACPR = -45 dBc Test Frequency = 2140 MHz Small signal gain Output power @ 1 dB compression Output 3rd Order Intercept Point Noise Figure Output power @ ACLR = -45 dBc G P1DB OIP3 NF POUT 3G-WCDMA. Downlink test model #1 with 64 DPCH CW CW Two tones, each @ +5 dBm/output tone 20 21 32 3.0 11 dB dBm dBm dB dBm G P1DB OIP3 NF PAE IQ POUT CW, POUT = +20 dBm No RF input IS-95. Nine forward channels CW CW Two tones, each @ +5 dBm/output tone 20 21 33 3.0 42 76 14 dB dBm dBm dB % mA dBm G P1DB OIP3 NF CW CW Two tones, each @ +14 dBm/output tone 28.5 19.5 34 3.3 dB dBm dBm dB Symbol Test Conditions Min Typical Max Units
Test Frequency = 2450 MHz Small signal gain Output power @ 1 dB compression Output 3rd Order Intercept Point Noise Figure Test Frequency = 2650 MHz Small signal gain Output power @ 1 dB compression Output 3rd Order Intercept Point Noise Figure G P1DB OIP3 NF CW CW Two tones, each @ +5 dBm/output tone 18 19 32 3.0 dB dBm dBm dB G P1DB OIP3 NF CW CW Two tones, each @ +5 dBm/output tone 18.5 20 33 3.0 dB dBm dBm dB
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65008
32 31 30
Gain (dB)
29 28 27 26 25 850
870
890
910
930
950
Frequency (MHz)
Figure 3. Typical Small Signal Gain vs Frequency in the 900 MHz Band
21
20
Gain (dB)
19
18 1700 1800 1900 2000 2100 2200
Frequency (MHz)
Figure 4. Typical Small Signal Gain vs Frequency in the 1900 MHz Band
21 20
Gain (dB)
19 18 17 2000
2050
2100
2150
2200
2250
2300
Frequency (MHz)
Figure 5. Typical Small Signal Gain vs Frequency in the 2100 MHz Band
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PRELIMINARY DATA SHEET * SKY65008
34.0
33.5
OIP3 (dB)
33.0
32.5
32.0 2 3 4 5 6 7 8 9 10
POUT (dBm)
Figure 6. Typical OIP3 vs Tone Output Power in the 1960 MHz Band
-40 -45 -50
ACPR (dBc)
-55 -60 -65 -70 -75 5 6 7 8 9 10 11 12 13 14 15
POUT (dBm)
Figure 7. Typical ACPR vs Output Power in the 1960 MHz Band
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65008
+10 0 -10
Power (dBc)
-20 -30 -40 -50 -60 -70 2.41
2.42
2.43
2.44
2.45
2.46
2.47
2.48
2.49
Frequency (GHz)
Figure 8. Spectral Mask Performance @ 2450 MHz (802.11b CCK @ 11 Mbps Input Signal, POUT = 19 dBm)
+10 0 -10
Power (dBc)
-20 -30 -40 -50 -60 2.40 2.42 2.44 2.46 2.48 2.50
Frequency (GHz)
Figure 9. Spectral Mask Performance @ 2450 MHz (802.11g 64QAM @ 54 Mbps Input Signal, POUT = 17 dBm)
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PRELIMINARY DATA SHEET * SKY65008
Evaluation Board Description
The Skyworks SKY65008 Evaluation Board is used to test the performance of the SKY65008 power amplifier driver. An assembly drawing for the Evaluation Board is shown in Figure 10 and the layer detail is provided in Figure 11. Circuit Design Configurations 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 SKY65008 power amplifier 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. NOTE: Junction temperature (TJ) of the device increases with a poor connection to the slug and ground. This reduces the lifetime of the device.
A suggested matching circuit is shown in Figure 12 with component values listed in Table 5. Testing Procedure Use the following procedure to set up the SKY65008 Evaluation Board for testing: 1. Connect a 3.3 V supply to VCC. If available, enable the current limiting function of the power supply to 240 mA. 2. Connect a signal generator to the RF signal input port. Set it to the desired RF frequency at a power level of -15 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 any of the output signals exceed the rated maximum values, the SKY65008 Evaluation Board can be permanently damaged.
JP1
GND
GND
R1
GND
VCC
C7 R2 R3 C1 C2 C3 C8 C9 C5 L2 C4 C6
J1 (RF In)
L1
J2 (RF Out)
S446
Figure 10. Evaluation Board Assembly Drawing
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PRELIMINARY DATA SHEET * SKY65008
Layer 1: Top - Metal
Layer 2: Ground
Layer 3: Ground
Layer 4: Solid Ground Plane
S447
Figure 11. Evaluation Board Layer Detail
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PRELIMINARY DATA SHEET * SKY65008
VCC = 3.3 V
C1 R2 C2 C3 R1
R3 L2
4
L1
Input
M2
1
3
M5
Output
M1
M3
2
M4
M6
S586
Figure 12. SKY65008 Evaluation Board Schematic (Refer to Table 5 for Component Values) Table 5. SKY65008 Evaluation Board Component Values vs Frequency
Component 900 R1 R2 R3 C1 C2 C3 L1 L2 M1 M2 M3 M4 M5 M6 0 750 680 1.0 F 10 pF 18 pF 47 nH 47 nH 4.7 nH 5.6 pF 7.5 pF 1.0 pF 18 pF 5.6 nH 1960 0 750 680 1.0 F 36 pF 6.8 pF 27 nH 27 nH 1 pF 3.9 pF DNC DNC 6.8 pF DNC Evaluation Board Frequency (MHz) 2140 0 750 680 1.0 F 6.8 pF 36 pF 27 nH 27 nH 1 pF 1.8 pF DNC DNC 15 pF 1 pF 2450 0 750 680 1.0 F 6.8 pF 18 pF 18 nH 18 nH 0.5 pF 1.2 pF DNC DNC 12 pF 1 pF 2650 0 750 680 1.0 F 6.8 pF 18 pF 18 nH 18 nH 0.5 pF 1.0 pF DNC DNC 12 pF 1 pF
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
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PRELIMINARY DATA SHEET * SKY65008
1.125
1.75
1.125
0.1
4.0 0.05
1.5
1.2
0.75
0.63
0.1
4.0 0.05
0.25 0.5 0.5 0.5
0.25
Side View
All measurements are in millimeters
Bottom View
S506
Figure 13. SKY65008 Package Dimensions
8.00 0.10 1.73 0.10 Reference Pin Indicator
4.00 0.10
1.50 0.10
2.00 0.05
1.75 0.10
B
5.50 0.05
A
4.35 0.10
A
8o Max 0.229 0.02
B
1.50 0.25
B
Notes: 1. Carrier tape material: black conductive polycarbonate or polysterene 2. Cover tape material: transparent conductive PSA 3. Cover tape size: 9.3 mm width 4. All measurements are in millimeters 4.35 0.10
7o Max
A
S583
Figure 14. SKY65008 Tape and Reel Dimensions
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12.00 +0.30/-0.10
PRELIMINARY DATA SHEET * SKY65008
Ordering Information
Model Name SKY65008 250-2700 MHz Linear, Low Current PA Driver Ordering Part Number SKY65008-21 Evaluation Kit Part Number TW13-D781-001 (836 MHz) TW13-D782-001 (900 MHz) TW13-D783-001 (1960 MHz) TW13-D784-001 (2140 MHz) TW13-D786-001 (2450 MHz) TW13-D787-001 (2650 MHz)
Copyright (c) 2005 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(R), the Skyworks logo, and Breakthrough Simplicity(R). 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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