DATA SHEET
SKY67003-396LF: 2.0-3.0 GHz High Linearity, Active Bias
Low-Noise Amplifier
Applications
• CDMA, WCDMA, TD-SCDMA, WiMAX, LTE cellular infrastructure
• Ultra low-noise systems
• Balanced, single-ended low-noise amplifier designs
Features
• Extended operating temperature range: –40 °C to +100 °C
• Low Noise Figure: 0.89 dB @ 2.6 GHz
• Excellent IIP3 performance: +21.5 dBm @ 2.6 GHz
Figure 1. SKY67003-396LF Block Diagram
• Gain: 17.5 dB @ 2.6 GHz
• Adjustable supply current
• Integrated enable circuitry
• Temperature and process-stable active bias
• Miniature DFN (8-pin, 2 x 2 mm) package (MSL1 @ 260 °C per
JEDEC J-STD-020)
Description
The SKY67003-396LF is GaAs, pHEMT Low-Noise Amplifier (LNA)
with an active bias and high linearity performance. The advanced
GaAs pHEMT enhancement mode process provides good 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 3
(VBIAS) 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.
The SKY67003-396LF operates in the frequency range of 2.2 to
3.0 GHz. For lower frequency operation, the pin-compatible
SKY67002-396LF or SKY67001-396LF should be used.
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.
Figure 2. SKY67003-396LF Pinout – 8-Pin DFN
(Top View)
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Table 1. SKY67003-396LF Signal Descriptions
Pin #
Name
Description
Pin #
Name
Description
1
N/C
No connection. May be connected to ground
with no change in performance.
5
N/C
No connection. May be connected to ground
with no change in performance.
2
RFIN
RF input. DC blocking capacitor required.
6
ENABLE
Enable pin. Active “low” (0 V) = amplifier on
state.
3
VBIAS
Bias for 1st stage amplifier. External resistor
sets current consumption.
7
RFOUT/VDD
RF output. Apply VDD through RF choke
inductor. DC blocking capacitor required.
4
N/C
No connection. May be connected to ground
with no change in performance.
8
N/C
No connection. May be connected to ground
with no change in performance.
Table 2. SKY67003-396LF Absolute Maximum Ratings
Parameter
Symbol
Minimum
Typical
Maximum
Units
Supply voltage
VDD
5.5
V
RF input power
PIN
+20
dBm
Channel temperature
TCH
Thermal resistance (@ 5 V bias)
ΘJC
Storage temperature
TSTG
–65
+25
+150
°C
Operating temperature
TA
–55
+25
+100
°C
+150
°C
°C/W
62.2
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.
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
SKY67003-396LF ESD threshold level is 500 VDC using Human Body Model (HBM) testing (Class 1B), 30 VDC using ManMachine (MM) model testing (Class A), and 1000 VDC using Charged Device Model (CDM) testing (Class IV).
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY67003-396LF are
provided in Table 2. Electrical specifications are provided in
Table 3.
Typical performance characteristics of the SKY67003-396LF are
illustrated in Figures 3 through 28.
Table 4 provides noise source pull information versus frequency.
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Table 3. SKY67003-396LF Electrical Specifications (Note 1)
(VDD = 5 V, IDD = 100 mA, TA = +25 °C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
0.88
1.10
dB
18.5
RF Specifications
Noise Figure (Note 2)
NF
@ 2.6 GHz
Small signal gain
|S21|
@ 2.6 GHz
16.5
17.5
Input return loss
|S11|
@ 2.6 GHz
12.5
14.5
dB
Output return loss
|S22|
@ 2.6 GHz
14
17
dB
Reverse isolation
|S12|
@ 2.6 GHz
27
30
dB
3 Order Input Intercept Point
IIP3
@ 2.6 GHz, Δf = 1 MHz,
PIN = –20 dBm/tone
+20.0
+21.5
dBm
3rd Order Output Intercept Point
OIP3
@ 2.6 GHz, Δf = 1 MHz,
PIN = –20 dBm/tone
+37.5
+39.0
dBm
1 dB Input Compression Point
IP1dB
@ 2.6 GHz
+2.2
+3.2
dBm
1 dB Output Compression Point
OP1dB
@ 2.6 GHz
+18.7
+19.7
dBm
Stability (Note 3)
μ, μ1
Up to 18 GHz,
–40 °C to +85 °C
>1
–
rd
dB
DC Specifications
Supply voltage
VDD
Quiescent supply current
IDD
Amplifier enable off current (logic “high”)
IEN
Enable rise time
TR
@ 2.6 GHz
100
μs
Enable fall time
TF
@ 2.6 GHz
100
μs
Set with external resistor
3.3
5.0
V
30
100
mA
700
1000
μA
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 M1 has been de-embedded from the NF measurement (0.06 dB).
Note 3: Applies to typical application circuit and components shown in Figure 28.
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Typical Performance Characteristics
(VDD = 5 V, IDD = 100 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
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DATA SHEET • SKY67003-396LF 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. IIP3 vs Input Power Over Temperature
@ 2200 MHz (PIN = –20 dBm, Tone Spacing = 1 MHz)
Figure 13. IIP3 vs Input Power Over Temperature
@ 2500 MHz (PIN = –20 dBm, Tone Spacing = 1 MHz)
Figure 14. IIP3 vs Input Power Over Temperature
@ 2600 MHz (PIN = –20 dBm, Tone Spacing = 1 MHz)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 15. IIP3 vs Input Power Over Temperature
@ 2700 MHz (PIN = –20 dBm, Tone Spacing = 1 MHz)
Figure 17. IIP3 vs Frequency Over Temperature
(PIN = –20 dBm, Tone Spacing = 1 MHz)
Figure 19. Gain vs Input Power Over Temperature
@ 2500 MHz
Figure 16. IIP3 vs Input Power Over Temperature
@ 3000 MHz (PIN = –20 dBm, Tone Spacing = 1 MHz)
Figure 18. Gain vs Input Power Over Temperature
@ 2200 MHz
Figure 20. Gain vs Input Power Over Temperature
@ 2600 MHz
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 21. Gain vs Input Power Over Temperature
@ 2700 MHz
Figure 22. Gain vs Input Power Over Temperature
@ 3000 MHz
Figure 23. Stability Factor (μ) vs Frequency Over Temperature
Figure 24. Stability Factor (μ1) vs Frequency Over Temperature
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 25. Load Pull, @ 5 V, 2600 MHz, 100 mA
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Table 4. Noise Parameters vs Frequency @ 25 °C
Γopt
Frequency
(GHz)
Minimum Noise
Figure (FMIN)
(dB)
Noise Resistance
(RN)
(Ω)
Phase
Associated Gain
(dB)
Maximum Gain
(GMAX)
(dB)
Magnitude
1.76
0.7057
0.0355
0.3691
173.36
21.3071
21.5307
1.84
0.7128
1.92
0.7626
0.0303
0.4325
174.95
21.0975
21.2198
0.0349
0.4147
176.31
20.7651
20.9243
1.98
0.8210
0.0354
0.4253
178.77
20.5410
20.6963
2.00
0.8234
0.0315
0.4502
–177.74
20.4740
20.6304
2.10
0.8206
0.0289
0.4521
173.00
20.1849
20.2753
2.20
0.8027
0.0284
0.4939
173.30
19.9093
19.9513
2.30
0.8060
0.0257
0.5071
–179.90
19.5752
19.6218
2.38
0.9463
0.0361
0.4754
–177.32
19.2899
19.3900
2.48
0.9779
0.0396
0.4942
–170.31
18.9365
19.0858
2.70
0.9958
0.0334
0.5058
–171.79
18.4394
18.5432
3.00
1.2098
0.0486
0.5254
–163.18
17.5977
17.7746
Evaluation Board Description
Package and Handling Information
The SKY67003-396LF Evaluation Board is used to test the
performance of the SKY67003-396LF LNA. An assembly drawing
for the Evaluation Board is shown in Figure 26. The layer detail is
provided in Figure 27. An Evaluation Board schematic diagram is
provided in Figure 28. Table 5 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.
Package Dimensions
The PCB layout footprint for the SKY67003-396LF is provided in
Figure 29. Typical case markings are shown in Figure 30.
Package dimensions for the 8-pin DFN are shown in Figure 31,
and tape and reel dimensions are provided in Figure 32.
THE SKY67003-396LF 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.
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 26. SKY67003-396LF Evaluation Board Assembly Diagram
Figure 27. Layer Detail Physical Characteristics
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 28. SKY67003-396LF Evaluation Board Schematic
Table 5. SKY67003-396LF Evaluation Board Bill of Materials
Component
Type
Value
Size
Manufacturer
M1
Resistor
0Ω
0402
Panasonic
M2
Inductor
2 nH
0402
Coilcraft HP
M3
Capacitor
1.6 pF
0402
Murata GJM
M4
Inductor
15 nH
0402
Coilcraft HP
M5
Capacitor
6 pF
0402
Murata GJM
M6
DNI
M7
Resistor
5.6 kΩ
0402
Panasonic
M8
Capacitor
1000 pF
0402
Murata GRM
M9
DNI
M10
Resistor
0Ω
0402
Panasonic
M11
Inductor
39 nH
0402
TDK MLG
M12
Capacitor
10 pF
0402
Murata GRM
M13
Capacitor
1000 pF
0402
Murata GRM
M14
Resistor
0Ω
0402
Panasonic
M15
Capacitor
0.1 μF
0402
Murata GRM
M16
Capacitor
2.2 pF
0402
Murata GRM
M17
Resistor
0Ω
0402
Panasonic
M18
Inductor
1.8 nH
0402
TDK MLG
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 29. SKY67003-396LF PCB Layout Footprint
(Top View)
Figure 30. Typical Case Markings
(Top View)
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 31. SKY67003-396LF 8-Pin DFN Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Figure 32. SKY67003-396LF Tape and Reel Dimensions
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DATA SHEET • SKY67003-396LF HIGH LINEARITY, ACTIVE BIAS LNA
Ordering Information
Model Name
SKY67003-396LF LNA
Manufacturing Part Number
SKY67003-396LF
Evaluation Board Part Number
SKY67003-396LF-EVB
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