DATA SHEET
SKY67014-396LF: 1.5 to 3.0 GHz Low-Noise, Low-Current
Amplifier
Applications
ISM band Bluetooth® and WLAN receiver systems
General purpose LNAs
VBIAS
Active
Bias
RF_OUT/VDD
RF_IN
Features
Low Evaluation Board NF: 0.85 dB @ 2.45 GHz
Gain: 13 dB @ 2.45 GHz
Adjustable supply current for higher IIP3
Incorporates on-die stability structures
Stability
Network
S2395
Miniature DFN (8-pin, 2 x 2 mm) package (MSL1 @ 260 C per
JEDEC J-STD-020)
Figure 1. SKY67014-396LF Block Diagram
Description
Skyworks Green™ products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green™, document number
SQ04-0074.
VBIAS
1
8
N/C
RF_IN
2
7
RF_OUT/VDD
N/C
3
6
N/C
N/C
4
5
N/C
The SKY67014-396LF is a GaAs, pHEMT low-noise amplifier
(LNA) with an integrated active bias. The advanced GaAs pHEMT
enhancement mode process provides excellent return loss, low
noise, and high linearity.
The device offers the ability to externally adjust the supply
current. The supply voltage is applied to the RF-OUT/VDD pin
through an RF choke inductor. The VBIAS pin should be connected
to the RF_OUT/VDD pin through an external resistor to control the
supply current. Both RF_OUT/VDD and RF_IN pins should be DC
blocked to ensure proper operation.
The SKY67014-396LF 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.
S2396
Figure 2. SKY67014-396LF Pinout – 8-Pin DFN
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201515D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 22, 2014
1
DATA SHEET • SKY67014-396LF: HIGH LINEARITY, ACTIVE BIAS LNA
Table 1. SKY67014-396LF Signal Descriptions
Pin
Name
Description
Pin
Name
Description
1
VBIAS
Bias for first stage amplifier. External
resistor sets current consumption.
5
N/C
No connection. May be connected to ground
with no change in performance.
2
RF_IN
RF input. DC blocking capacitor required.
6
N/C
No connection. May be connected to ground
with no change in performance.
3
N/C
No connection. May be connected to ground
with no change in performance.
7
RF_OUT/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. SKY67014-396LF Absolute Maximum Ratings (Note 1)
Maximum
Units
Supply voltage
Parameter
VDD
Symbol
5.5
V
Drain current
IDD
40
mA
RF input power
PIN
+18
dBm
Storage temperature
TSTG
–65
+25
+125
C
Operating temperature
TA
–40
+25
+85
C
Thermal resistance
ΘJC
Electrostatic discharge:
ESD
Charged Device Model (CDM), Class 4
Human Body Model (HBM), Class 1A
Machine Model (MM), Class A
Minimum
Typical
C/W
128
>1000
>300
>30
V
V
V
Note 1: 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.
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY67014-396LF are
provided in Table 2. Electrical specifications are provided in
Tables 3 and 4.
Typical performance characteristics of the SKY67014-396LF are
illustrated in Figures 3 through 15 (18 mA operation) and in
Figures 16 through 26 (5 mA operation).
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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DATA SHEET • SKY67014-396LF: HIGH LINEARITY, ACTIVE BIAS LNA
Table 3. SKY67014-396LF Electrical Specifications (Note 1)
(VDD = 3.3 V, Quiescent Current = 18 mA, TA = +25 C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Tuning Optimized for
2.45 GHz, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
0.85
1.05
dB
RF Specifications
Noise figure
NF
Evaluation Board losses
included
Small signal gain
|S21|
12
13
dB
Input return loss
|S11|
12
15
dB
Output return loss
|S22|
8
11
dB
Reverse isolation
|S12|
20
23
dB
3rd Order Input Intercept Point
IIP3
Δf = 1 MHz,
PIN = –20 dBm/tone
+12
+15
dBm
3rd Order Output Intercept Point
OIP3
Δf = 1 MHz,
PIN = –20 dBm/tone
+25
+28
dBm
1 dB Input Compression Point
IP1dB
+1.5
+3.5
dBm
1 dB Output Compression Point
OP1dB
+13.5
+15.5
dBm
3.0
3.3
DC Specifications
Supply voltage
VDD
Supply current
IDD
Set with external resistor
5.5
18
V
mA
Note 1: Performance is guaranteed only under the conditions listed in this table.
Table 4. SKY67014-396LF Electrical Specifications (Note 1)
(VDD = 3.3 V, Quiescent Current = 5 mA, TA = +25 C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Tuning Optimized for
2.45 GHz, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Min
Typical
Max
Units
1.05
1.35
dB
RF Specifications
Noise Figure
NF
Evaluation Board losses
included
Small signal gain
|S21|
10
12
dB
Input return loss
|S11|
11
17
dB
Output return loss
|S22|
8
13
dB
Reverse isolation
|S12|
19
22
dB
3 Order Input Intercept Point
IIP3
Δf = 1 MHz,
PIN = –20 dBm/tone
+2
+6
dBm
3rd Order Output Intercept Point
OIP3
Δf = 1 MHz,
PIN = –20 dBm/tone
+14
+18
dBm
1 dB Input Compression Point
IP1dB
+3
+5
dBm
1 dB Output Compression Point
OP1dB
+14
+16
dBm
3.3
V
rd
DC Specifications
Supply voltage
VDD
Supply current
IDD
Set with external resistor
2
5
8
mA
Note 1: Performance is guaranteed only under the conditions listed in this table.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201515D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 22, 2014
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DATA SHEET • SKY67014-396LF: HIGH LINEARITY, ACTIVE BIAS LNA
Typical Performance Characteristics
1.4
14.0
1.2
13.8
Small Signal Gain (dB)
Noise Figure (dB)
(VDD = 3.3 V, Quiescent Current = 18 mA, TA = +25 C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Tuning Optimized for
2.45 GHz, Unless Otherwise Noted)
1.0
0.8
0.6
0.4
+25 °C
+85 °C
–40 °C
0.2
0
2.40
2.42
2.44
2.46
2.48
13.6
13.4
13.2
13.0
12.8
12.6
12.4
+25 °C
+85 °C
–40 °C
12.2
12.0
2.50
2.40
2.42
2.44
Frequency (GHz)
+25 °C
+85 °C
–40 °C
2.42
2.44
2.46
2.48
–22.5
–23.0
–23.5
–24.0
+25 °C
+85 °C
–40 °C
–24.5
–25.0
2.40
2.50
2.42
2.44
2.48
2.50
Figure 6. Small Signal Reverse Isolation (|S12|) vs Frequency and
Temperature, Narrow Band
+20
Small Signal Gain (dB)
Output Return Loss (dB)
2.46
Frequency (GHz)
Figure 5. Small Signal Input Return Loss (|S11|) vs Frequency and
Temperature, Narrow Band
+25 °C
+85 °C
–40 °C
2.42
2.44
2.46
2.48
2.50
Frequency (GHz)
Figure 7. Small Signal Output Return Loss (|S22|) vs Frequency
and Temperature, Narrow Band
+25 °C
+85 °C
–40 °C
+10
0
–10
–20
–30
–40
–50
0
2
4
6
8
10 12
14 16
18 20
22 24
Frequency (GHz)
Figure 8. Small Signal Gain (|S21|) vs Frequency and
Temperature, Wide Band
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2.50
–22.0
Frequency (GHz)
0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
2.40
2.48
Figure 4. Small Signal Gain (|S21|) vs Frequency and
Temperature, Narrow Band
Reverse Isolation (dB)
Input Return Loss (dB)
Figure 3. Noise Figure vs Frequency and Temperature,
Narrow Band (Includes EVB Insertion Losses)
–13.0
–13.5
–14.0
–14.5
–15.0
–15.5
–16.0
–16.5
–17.0
–17.5
–18.0
2.40
2.46
Frequency (GHz)
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0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
Reverse Isolation (dB)
Input Return Loss (dB)
DATA SHEET • SKY67014-396LF: HIGH LINEARITY, ACTIVE BIAS LNA
+25 °C
+85 °C
–40 °C
0
2
4
6
8
10
12
14 16
18 20 22
24
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
+25 °C
+85 °C
–40 °C
0
2
4
6
8
20 22 24
5.0
+25 °C
+85 °C
–40 °C
0
2
4
6
8
10 12
14
16 18
20
22 24
+25 °C
+85 °C
–40 °C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2
4
6
Frequency (GHz)
5.0
4.5
OP1dB (dBm)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
2
4
6
8
10
12
14 16
10 12
14 16
18
20 22
24
Figure 12. Stability Factor (μ1) vs Frequency and Temperature,
Wide Band
+25 °C
+85 °C
–40 °C
0
8
Frequency (GHz)
Figure 11. Small Signal Output Return Loss (| S22 |) vs Frequency
and Temperature, Wide Band
Stability Factor, µ2
14 16 18
Figure 10. Small Signal Reverse Isolation (| S12 |) vs Frequency
and Temperature, Wide Band
Stability Factor, µ1
Output Return Loss (dB)
Figure 9. Small Signal Input Return Loss (| S11 |) vs Frequency
and Temperature, Wide Band
0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
10 12
Frequency (GHz)
Frequency (GHz)
18
20 22
24
Frequency (GHz)
Figure 13. Stability Factor (μ2) vs Frequency and Temperature,
Wide Band
+20
+18
+16
+14
+12
+10
+8
+6
+4
+2
0
3.3 V
5.0 V
1.8 V
5
10
15
20
25
30
Quiescent Current (mA)
Figure 14. OP1dB vs Quiescent Current and Voltage
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201515D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 22, 2014
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DATA SHEET • SKY67014-396LF: HIGH LINEARITY, ACTIVE BIAS LNA
+35
OIP3 (dBm)
+30
+25
+20
+15
3.3 V
5.0 V
1.8 V
+10
+5
5
10
15
20
25
30
Quiescent Current (mA)
Figure 15. OIP3 vs Quiescent Current and Voltage
Typical Performance Characteristics
1.4
1.04
1.2
13.5
Small Signal Gain (dB)
Noise Figure (dB)
(VDD = 3.3 V, Quiescent Current = 5 mA, TA = +25 C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Tuning Optimized for
2.45 GHz, Unless Otherwise Noted)
1.0
0.8
0.6
0.4
+25 °C
+85 °C
–40 °C
0.2
0
2.40
2.42
2.44
2.46
2.48
13.0
12.5
12.0
11.5
11.0
10.0
2.40
2.50
+25 °C
+85 °C
–40 °C
10.5
2.42
2.44
2.46
2.48
Reverse Isolation (dB)
Input Return Loss (dB)
+25 °C
+85 °C
–40 °C
2.42
2.46
2.50
Frequency (GHz)
Figure 18. Small Signal Input Return Loss (|S11|) vs Frequency
and Temperature, Narrow Band
–22.0
–22.1
–22.2
–22.3
–22.4
–22.5
–22.6
–22.7
–22.8
–22.9
–23.0
2.40
2.50
+25 °C
+85 °C
–40 °C
2.42
2.44
2.46
2.48
2.50
Frequency (GHz)
Figure 19. Small Signal Reverse Isolation (|S12|) vs Frequency
and Temperature, Narrow Band
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2.48
Figure 17. Small Signal Gain (|S21|) vs Frequency and
Temperature, Narrow Band
Figure 16. Noise Figure vs Frequency and Temperature,
Narrow Band (Includes EVB Insertion Losses)
0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
–22
–24
2.40
2.44
Frequency (GHz)
Frequency (GHz)
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+20
0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
2.40
Small Signal Gain (dB)
Output Return Loss (dB)
DATA SHEET • SKY67014-396LF: HIGH LINEARITY, ACTIVE BIAS LNA
+25 °C
+85 °C
–40 °C
2.42
2.44
2.46
2.48
+10
0
–10
–20
–30
+25 °C
+85 °C
–40 °C
–40
–50
0
2.50
2
4
6
Figure 20. Small Signal Output Return Loss (|S22|) vs Frequency
and Temperature, Narrow Band
Reverse Isolation (dB)
Input Return Loss (dB)
–5
–10
–15
+25 °C
+85 °C
–40 °C
–20
0
2
4
6
8
10
12
14
16
18
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
–5
4.5
4.0
3.5
3.0
2.5
Stability Factor, μ1
Output Return Loss (dB)
5.0
–10
–15
–20
–25
+25 °C
+85 °C
–40 °C
–30
4
6
8
10
12
16
18
0
2
4
6
8
10
12
14
16
18
Figure 23. Small Signal Reverse Isolation (| S12 |) vs Frequency
and Temperature, Wide Band
0
2
14
Frequency (GHz)
Figure 22. Small Signal Input Return Loss (| S11 |) vs Frequency
and Temperature, Wide Band
0
12
+25 °C
+85 °C
–40 °C
Frequency (GHz)
–35
10
Figure 21. Small Signal Gain (|S21|) vs Frequency and
Temperature, Wide Band
0
–25
8
Frequency (GHz)
Frequency (GHz)
14
16
18
Frequency (GHz)
Figure 24. Small Signal Output Return Loss (| S22 |) vs Frequency
and Temperature, Wide Band
+25 °C
+85 °C
–40 °C
2.0
1.5
1.0
0.5
0
2
4
6
8
10
12
14
16
18
Frequency (GHz)
Figure 25. Stability Factor (μ1) vs Frequency and Temperature,
Wide Band
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DATA SHEET • SKY67014-396LF: HIGH LINEARITY, ACTIVE BIAS LNA
Stability Factor, μ2
5.0
+25 °C
+85 °C
–40 °C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
2
4
6
8
10
12
14
16
18
Frequency (GHz)
Figure 26. Stability Factor (μ2) vs Frequency and Temperature, Wide Band
Evaluation Board Description
Package and Handling Information
The SKY67014-396LF Evaluation Board is used to test the
performance of the SKY67014-396LF LNA. An assembly drawing
for the Evaluation Board is shown in Figure 27. An Evaluation
Board schematic diagram is provided in Figure 28.
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.
Table 5 provides the Bill of Materials (BOM) list for Evaluation
Board components needed for 18 mA operation (for applications
that use a bias current ≥12 mA). Table 6 provides the BOM list for
Evaluation Board components needed for 5 mA operation (for
applications that use a bias current