SKY67105-306LF - Skyworks Solutions, Inc.

DATA SHEET
SKY67105-306LF: 0.6-1.1 GHz Two-Stage, High Linearity and
High Gain Low-Noise Amplifier
Applications
• GSM, CDMA, WCDMA, cellular infrastructure systems
• Ultra low-noise, high gain and high linearity systems
Features
• Ultra-low NF: 0.69 dB @ 850 MHz
• High gain: 37 dB @ 850 MHz
• +4 or +5 V operation for improved efficiency
• Stage 1 adjustable gain and current
• Wideband performance, useable to 1.1 GHz
• Small, QFN (16-pin, 4 x 4 mm) Pb-free package (MSL1, 260 °C
per JEDEC J-STD-020)
Figure 1. SKY67105-306LF Block Diagram
Description
The SKY67105-306LF is a GaAs pHEMT and HBT two-stage, LowNoise Amplifier (LNA) with active bias and high linearity
performance. The pHEMT front end of the device provides an
ultra-low Noise Figure (NF) while the HBT output stage provides
high gain, linearity, and efficiency.
The SKY67105-306LF operates in the frequency range of 0.6 to
1.1 GHz. For higher frequency operation, the pin and layoutcompatible SKY67106-306LF (Data Sheet document # 201521)
should be used.
The SKY67105-306LF is provided in a 4 x 4 mm, 16-pin Quad Flat
No-Lead (QFN) 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 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Figure 2. SKY67105-306LF Pinout – 16-Pin QFN
(Top View)
Table 1. SKY67105-306LF Signal Descriptions
Pin #
Name
Description
Pin #
Name
Description
1
N/C
No connection. May be grounded with no
change in performance.
9
N/C
No connection. May be grounded with no
change in performance.
2
N/C
No connection. May be grounded with no
change in performance.
10
RF_OUT2
RF output of second stage amplifier. Bias to
the output of stage 2 is supplied through
pins 10 and 11.
3
RF_IN1
RF input to first stage amplifier
11
RF_OUT2
RF output of second stage amplifier. Bias to
the output of stage 2 is supplied through
pins 10 and 11.
4
RF_GND
RF ground for first stage amplifier
12
N/C
No connection. May be grounded with no
change in performance.
5
VBIAS1
Bias for first stage amplifier. External
resistor sets current consumption.
13
N/C
No connection. May be grounded with no
change in performance.
6
FB
Feedback pin for first stage amplifer.
14
N/C
No connection. May be grounded with no
change in performance.
7
RF_OUT1
RF output of first stage amplifer
15
N/C
No connection. May be grounded with no
change in performance.
8
RF_IN2
RF input to second stage amplifier
16
N/C
No connection. May be grounded with no
change in performance.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY67105-306LF are
provided in Table 2. Electrical specifications are provided in
Tables 3 (VDD = +5 V) and 4 (VDD = +4 V).
Typical performance characteristics of the SKY67105-306LF are
illustrated in Figures 3 through 15.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected]inc.com • www.skyworksinc.com
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Table 2. SKY67105-306LF Absolute Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Units
5.5
V
Supply voltage
VDD
RF input power
PIN
+15
dBm
Operating temperature
TOP
–40
+85
°C
Storage temperature
TSTG
–40
+125
°C
Junction temperature
TJ
Thermal resistance
ΘJC
Note:
+150
°C
89
°C/W
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.
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
SKY67105-306LF is a Class 1B ESD device.
Table 3. SKY67105-306LF Electrical Specifications: VDD = +5 V (Note 1)
(TOP = +25 °C, PIN = –30 dBm, Characteristic Impedance [ZO] = 50 Ω, Optimized for 850 MHz Operation, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
0.69
0.89
dB
39
dB
RF Specifications
Noise Figure
NF
@ 850 MHz
Small signal gain
|S21|
@ 850 MHz
35
37
Input return loss
|S11|
@ 850 MHz
9
12
dB
Output return loss
|S22|
@ 850 MHz
9
12
dB
Reverse isolation
|S12|
@ 850 MHz
53
57
dB
3 Order Input Intercept Point
IIP3
@ 850 MHz, Δf = 1 MHz,
PIN = –30 dBm/tone
+1
+4
dBm
3rd Order Output Intercept Point
OIP3
@ 850 MHz, Δf = 1 MHz,
PIN = –30 dBm/tone
+38
+41
dBm
1 dB Input Compression Point
IP1dB
@ 850 MHz
–12
–10
dBm
1 dB Output Compression Point
OP1dB
@ 850 MHz
+24
+26
dBm
3.5
5.0
5.5
V
120
138
155
mA
240
280
mA
rd
DC Specifications
Supply voltage
VDD
Quiescent current
IDD
Set with external resistor
Supply current @ IP1dB
IDD_P1DB
Set with external resistor
Note 1: Performance is guaranteed only under the conditions listed in this Table.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Table 4. SKY67105-306LF Electrical Specifications: VDD = +4 V (Note 1)
(TOP = +25 °C, PIN = –30 dBm, Characteristic Impedance [ZO] = 50 Ω, Optimized for 850 MHz Operation, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
RF Specifications
Noise Figure
NF
@ 850 MHz
0.69
dB
Small signal gain
|S21|
@ 850 MHz
37
dB
Input return loss
|S11|
@ 850 MHz
12
dB
Output return loss
|S22|
@ 850 MHz
12
dB
Reverse isolation
|S12|
@ 850 MHz
57
dB
3 Order Input Intercept Point
IIP3
@ 850 MHz, Δf = 1 MHz,
PIN = –30 dBm/tone
+2
dBm
3rd Order Output Intercept Point
OIP3
@ 850 MHz, Δf = 1 MHz,
PIN = –30 dBm/tone
+39
dBm
1 dB Input Compression Point
IP1dB
@ 850 MHz
–13
dBm
1 dB Output Compression Point
OP1dB
@ 850 MHz
+24
dBm
rd
DC Specifications
Supply voltage
VDD
4
V
Quiescent current
IDD
Set with external resistor
115
mA
Supply current @ IP1dB
IDD_P1DB
Set with external resistor
190
mA
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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April 15. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201518A
DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Typical Performance Characteristics
(VDD = +5 V, TOP = +25 °C, PIN = –30 dBm, Characteristic Impedance [ZO] = 50 Ω, Optimized for 850 MHz Operation, Unless Otherwise
Noted)
Figure 3. Input Return Loss vs Frequency Over Temperature,
Narrow Band
Figure 4. Small Signal Gain vs Frequency Over Temperature,
Narrow Band
Figure 5. Reverse Isolation vs Frequency Over Temperature,
Narrow Band
Figure 6. Output Return Loss vs Frequency Over Temperature,
Narrow Band
Figure 7. Input Return Loss vs Frequency Over Temperature,
Wide Band
Figure 8. Small Signal Gain vs Frequency Over Temperature,
Wide Band
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Figure 9. Reverse Isolation vs Frequency Over Temperature,
Wide Band
Figure 10. Output Return Loss vs Frequency Over Temperature,
Wide Band
Figure 11. OIP3 vs Frequency Over Temperature
Figure 12. OIP3 vs Frequency Over Voltage
Figure 13. Gain vs Output Power Over Temperature
Figure 14. Quiescent Supply Current vs Output Power Over
Temperature
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Figure 15. Noise Figure vs Frequency Over Temperature
Evaluation Board Description
Package and Handling Information
The SKY67105-306LF Evaluation Board is used to test the
performance of the SKY67105-306LF two-stage LNA. An
Evaluation Board schematic diagram is provided in Figure 16.
Table 5 provides the Evaluation Board Bill of Materials. An
assembly drawing for the Evaluation Board is shown in Figure 17.
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.
Package Dimensions
THE SKY67105-306LF 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.
The PCB layout footprint for the SKY67105-306LF is shown in
Figure 18. Typical case markings are noted in Figure 19. Package
dimensions for the 16-pin QFN are shown in Figure 20, and tape
and reel dimensions are provided in Figure 21.
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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Figure 16. SKY67105-306LF Evaluation Board Schematic (For 850 MHz and VDD = +5 V)
Table 5. SKY67105-306LF Evaluation Board Bill of Materials (For 850 MHz and VDD = +5 V)
Component
Value
Size
Manufacturer
C1
4.7 pF
0402
Murata GJM
C2
100 pF
0402
Murata GRM
C3
0.1 μF
0402
Murata GRM
C4
10 pF
0402
Murata GRM
C5, C10
1000 pF
0402
Murata GRM
C6
3.3 pF
0402
Murata GRM
C7, C13
27 pF
0402
Murata GRM
C8
5.1 pF
0402
Murata GRM
C9
68 pF
0402
Murata GRM
C11
1 μF
0402
Murata GRM
C12
6.8 pF
0402
Murata GRM
L1
9 nH
0402
Coilcraft CS
L2
3.3 nH
0402
TDK MLG
L3
47 nH
0402
TDK MLG
L4
6.8 nH
0402
TDK MLG
R1
3.6 kΩ
0402
Panasonic 1%
R2
51 Ω
0402
Panasonic 1%
R3, R4, R5
0Ω
0402
Panasonic
Manufacturer Part Number
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Figure 17. SKY67105-306LF Evaluation Board Assembly Diagram
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Figure 18. SKY67105-306LF PCB Layout Footprint
Figure 19. Typical Case Markings
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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April 15. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201518A
DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Figure 20. SKY67105-306LF 16-Pin QFN Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Figure 21. SKY67105-306LF Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET • SKY67105-306LF TWO-STAGE LNA
Ordering Information
Model Name
SKY67105-306LF Two-Stage LNA
Manufacturing Part Number
SKY67105-306LF
Evaluation Board Part Number
SKY67105-306LF-EVB
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