201631B.pdf

DATA SHEET
SKY67102-396LF: 2.0-3.0 GHz High Linearity, Active Bias
Low-Noise Amplifier
Applications
• CDMA, WCDMA, TD-SCDMA, WiMAX, and LTE cellular
infrastructure
• Ultra low-noise systems
Features
• Ultra Low Noise Figure: 0.8 dB @ 2.6 GHz
• Input and output return loss > 18 dB @ 2.6 GHz
• High IIP3 performance: +16.7 dBm @ 2.6 GHz
• Adjustable supply current and gain
• Temperature and process-stable active bias
• Miniature DFN (8-pin, 2 x 2 mm) package (MSL1 @ 260 °C per
JEDEC J-STD-020)
Figure 1. SKY67102-396LF Block Diagram
Description
The SKY67102-396LF is GaAs, pHEMT Low-Noise Amplifier (LNA)
with an active bias and high linearity performance. The advanced
GaAs pHEMT enhancement mode process provides excellent
return loss, low noise, and high linearity performance.
The internal active bias circuitry provides stable performance over
temperature and process variation. The device offers the ability to
externally adjust supply current and gain. Supply voltage is
applied to the RFOUT/VDD pin through an RF choke inductor. Pin 4
(VIN) should be connected to RFOUT/VDD through an external
resistor to control the supply current. The RFIN and RFOUT/VDD
pins should be DC blocked to ensure proper operation. Pin 5
(FEEDBACK) is connected through an RC network to externally
adjust the gain of the device without affecting the Noise Figure
(NF) of the LNA.
The SKY67102-396LF operates in the frequency range of 2.0 to
3.0 GHz with proper tuning. For lower frequency operation, the
pin-compatible SKY67100-396LF or SKY67101-396LF should be
used.
Figure 2. SKY67102-396LF Pinout – 8-Pin DFN
(Top View)
The LNA is manufactured in a compact, 2 x 2 mm, 8-pin Dual Flat
No-Lead (DFN) package. A functional block diagram is shown in
Figure 1. The pin configuration and package are shown in
Figure 2. Signal pin assignments and functional pin descriptions
are provided in Table 1.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201631B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 28, 2011
1
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Table 1. SKY67102-396LF Signal Descriptions
Pin #
Name
Description
Pin #
Name
Description
1
N/C
No connection. May be connected to ground
with no change in performance.
5
FEEDBACK
LNA external gain control. Connect to
RFOUT using a series RD network.
2
RFIN
RF input. DC blocking capacitor required.
6
N/C
No connection. May be connected to ground
with no change in performance.
3
RFGND
RF ground. Connect to ground through a
capacitor.
7
RFOUT/VDD
RF output. Apply VDD through RF choke
inductor. DC blocking capacitor required.
4
VIN
LNA supply current. Connect through series
resistor to VDD.
8
N/C
No connection. May be connected to ground
with no change in performance.
Table 2. SKY67102-396LF Absolute Maximum Ratings
Parameter
Symbol
Minimum
Typical
Maximum
Units
Supply voltage
VDD
5.5
V
Supply current
IDD
100
mA
RF input power
PIN
+20
dBm
Storage temperature
TSTG
–65
+25
+125
°C
Operating temperature
TA
–40
+25
+85
°C
Junction temperature
TJ
+150
°C
Notes: 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 value. Exceeding any of the limits listed here may result in permanent damage to the device.
Thermal resistance = 83 °C/W @ 4 V bias.
CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) 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 should be used at all times. The
SKY67102-396LF is a Human Body Model (HBM) Class 1A ESD device.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY67102-396LF are
provided in Table 2. Electrical specifications are provided in
Table 3.
Typical performance characteristics of the SKY67102-396LF are
illustrated in Figures 3 through 14.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
September 28, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201631B
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Table 3. SKY67102-396LF Electrical Specifications (Note 1)
(VDD = 4.0 V, IDD = 50 mA, TA = +25 °C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
1.10
0.80
1.10
0.95
dB
dB
dB
18.2
dB
dB
dB
RF Specifications
Noise Figure (Note 2)
Small signal gain
NF
|S21|
Input return loss
|S11|
Output return loss
|S22|
Reverse isolation
|S12|
@ 2.0 GHz
@ 2.6 GHz
@ 3.0 GHz
@ 2.0 GHz
@ 2.6 GHz
@ 3.0 GHz
16.2
18.2
17.2
1.12
@ 2.0 GHz
@ 2.6 GHz
@ 3.0 GHz
15
10
18
12
dB
dB
dB
@ 2.0 GHz
@ 2.6 GHz
@ 3.0 GHz
14
9
17
13
dB
dB
dB
@ 2.0 GHz
@ 2.6 GHz
@ 3.0 GHz
34
37
37
38
dB
dB
dB
+16.7
dBm
+33.8
dBm
3rd Order Input Intercept Point
IIP3
@ 2.6 GHz, Δf = 5 MHz,
PIN = –18 dBm/tone
3rd Order Output Intercept Point
OIP3
@ 2.6 GHz, Δf = 5 MHz,
PIN = –18 dBm/tone
1 dB Input Compression Point
IP1dB
@ 2.6 GHz
–1
dBm
1 dB Output Compression Point
OP1dB
@ 2.6 GHz
+15.1
dBm
Stability
μ1, μ2
Up to 18 GHz,
–40 °C to +85 °C
>1
–
+32.0
DC Specifications
Supply voltage
VDD
Supply current
IDD
Set with external resistor
3.3
4.0
5.0
V
15
50
90
mA
Note 1: Performance is guaranteed only under the conditions listed in this Table.
Note 2 Loss from the input SMA connector and Evaluation Board up to component C1 has been de-embedded from the NF measurement.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201631B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 28, 2011
3
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Typical Performance Characteristics
(VDD = 4.0 V, IDD = 50 mA, TA = +25 °C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted)
Figure 3. Broadband Gain Response vs Frequency Over
Temperature
Figure 4. Narrowband Gain Response vs Frequency Over
Temperature
Figure 5. Broadband Input Return Loss vs Frequency Over
Temperature
Figure 6. Narrowband Input Return Loss vs Frequency Over
Temperature
Figure 7. Broadband Reverse Isolation vs Frequency Over
Temperature
Figure 8. Narrowband Reverse Isolation vs Frequency Over
Temperature
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
4
September 28, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201631B
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 9. Broadband Output Return Loss vs Frequency Over
Temperature
Figure 10. Narrowband Output Return Loss vs Frequency Over
Temperature
Figure 11. Noise Figure vs Frequency Over Temperature
Figure 12. μ1 Stability vs Frequency Over Temperature @ 4 V
Figure 13. μ2 Stability vs Frequency Over Temperature @ 4 V
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201631B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 28, 2011
5
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Evaluation Board Description
Package and Handling Information
The SKY67102-396LF Evaluation Board is used to test the
performance of the SKY67102-396LF LNA. An assembly drawing
for the Evaluation Board is shown in Figure 14. An Evaluation
Board schematic diagram is provided in Figure 15. Table 4
provides the Bill of Materials (BOM) list for Evaluation Board
components.
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 test board uses a 10 mil Rogers 4350B substrate on a 50 mil
FR4 supporting substrate. The Rogers 4350B material was
selected for the RF circuit because of its low dielectric constant
(εr) and low εr variation over temperature for the best possible
noise performance.
Package Dimensions
THE SKY67102-396LF is rated to Moisture Sensitivity Level 1
(MSL1) at 260 °C. It can be used for lead or lead-free soldering.
For additional information, refer to the Skyworks Application Note,
Solder Reflow Information, document number 200164.
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.
The PCB layout footprint for the SKY67102-396LF is provided in
Figure 16. Typical case markings are shown in Figure 17.
Package dimensions for the 8-pin DFN are shown in Figure 18,
and tape and reel dimensions are provided in Figure 19.
Figure 14. SKY67102-396LF Evaluation Board Assembly Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
6
September 28, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201631B
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 15. SKY67102-396LF Evaluation Board Schematic
Table 4. SKY67102-396LF Evaluation Board Bill of Materials
Component
Value
Size
Manufacturer
C1
10 pF
SMT 0402
Murata GJM (high Q)
C2
3.6 pF
SMT 0402
Murata GJM (high Q)
C3
0.1 μF
SMT 0402
Murata GRM
C4
DNI
–
–
C5
100 pF
SMT 0402
Murata GRM
C6
10 pF
SMT 0402
Murata GRM
C7
1000 pF
SMT 0402
Murata GRM
C8
DNI
–
–
L1
3.3 nH
SMT 0402
Murata LQW
L2
2.4 nH
SMT 0402
Murata LQG
R1
3600 Ω
SMT 0402
Panasonic
R2
DNI
–
–
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201631B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 28, 2011
7
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 16. SKY67102-396LF PCB Layout Footprint
(Top View)
Figure 17. Typical Case Markings
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
8
September 28, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201631B
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 18. SKY67102-396LF 8-Pin DFN Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201631B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 28, 2011
9
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 19. SKY67102-396LF Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
10
September 28, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201631B
DATA SHEET • SKY67102-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Ordering Information
Model Name
SKY67102-396LF LNA
Manufacturing Part Number
SKY67102-396LF
Evaluation Board Part Number
SKY67102-396LF-EVB
Copyright © 2011 Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, 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 or the
information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to
update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or
information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of
Sale.
THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A
PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY
DISCLAIMED. SKYWORKS 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 BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION,
LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, 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, or other equipment in which the failure of the Skyworks products could lead to personal injury,
death, physical or environmental damage. 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.
Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of
products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for
applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands
and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com,
are incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201631B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • September 28, 2011
11