PRELIMINARY DATA SHEET
VEN
Applications
• GPS/GNSS radio receivers
• Global Navigation Satellite Systems (GLONASS)
• Smart phones
• Tablet/laptop PCs
• Personal navigation devices
VCC
SKY65601-477LF: 1.575 GHz GPS/GNSS Low-Noise Amplifier
Enable
Input
Match
RF_IN
LNA
Output
Match
Features
RF_OUT
S2412a
• All matching components integrated (no inductors required)
• Small signal gain: 16.8 dB typical
• IIP3: +4 dBm
• Low Noise Figure: 0.8 dB typical
• IP1dB: up to –4.8 dBm
• Low current consumption
• Input/output impedance internally matched to 50 Ω
• Single DC supply: 1.8 to 3.6 V
• Minimal number of external components required
• Small, DFN (6-pin, 2.0 x 1.3 mm) package (MSL1, 260 °C per
JEDEC J-STD-020)
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.
VEN
1
6
VCC
RF_IN
2
5
RF_OUT
GND
3
4
HIGH_LIN
Figure 1. SKY65601-477LF Block Diagram
Description
The SKY65601-477LF is a Microwave Monolithic Integrated
Circuit (MMIC) front-end Low Noise Amplifier (LNA) designed for
Global Positioning System/Global Navigation Satellite System
(GPS/GNSS) receiver applications. The device provides high
linearity, excellent gain, a high 1 dB Input Compression Point
(IP1dB), and a superior Noise Figure (NF). All critical matching
components are embedded inside the device. No external
matching components are required.
The SKY65601-477LF is optimized to operate at 1.5750 and
1.6018 GHz, which makes it ideal for GPS/GNSS radio receiver
applications.
The SKY65601-477LF is fabricated using advanced SiGe BiCMOS
technology. The LNA uses Surface Mount Technology (SMT) in the
form of a 2.0 x 1.3 mm Dual Flat No-Lead (DFN) package, which
allows for a highly manufacturable and low-cost solution.
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.
S2651
Figure 2. SKY65601-477LF Pinout – 6-Pin DFN
(Top View)
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1
PRELIMINARY DATA SHEET • SKY65601-477LF LOW-NOISE AMPLIFIER
Table 1. SKY65601-477LF Signal Descriptions
Pin #
Name
Description
Pin #
LNA enable
4
Name
HIGH_LIN
Description
1
VEN
High linearity mode
2
RF_IN
RF input
5
RF_OUT
RF output
3
GND
Ground
6
VCC
Source voltage
Table 2. SKY65601-477LF Absolute Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Units
RF input power
PIN
0
dBm
Supply voltage
VCC
1.8
3.6
V
Storage temperature
TSTG
–55
+125
°C
Junction temperature
TJ
+150
°C
Note:
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.
Table 3. SKY65601-477LF Recommended Operating Conditions
Parameter
Symbol
Minimum
Typical
Maximum
Units
Frequency range
f
1565
1575
1606
MHz
Supply voltage (measured at terminals of
Evaluation Board)
VCC
1.80
2.85
3.60
V
LNA enable:
Enable (high)
Disable (low)
LNAENABLE
LNADISABLE
1.5
0
VCC
0.3
V
V
Case operating temperature
TC
–40
+85
°C
Technical Description
Electrical and Mechanical Specifications
Power Shut Down
The absolute maximum ratings of the SKY65601-477LF are
provided in Table 2. The recommended operating conditions are
specified in Table 3 and electrical specifications are provided in
Table 4.
The VEN signal (pin 1) enables or disables the LNA DC power. A
logic high signal powers on the LNA and a logic low signal powers
off the device.
Performance characteristics for the SKY65601-477LF are
illustrated in Figures 3 through 8.
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PRELIMINARY DATA SHEET • SKY65601-477LF LOW-NOISE AMPLIFIER
Table 4. SKY65601-477LF Electrical Specifications (Note 1)
(VCC = 2.85 V, VBIAS = 1.5 V, TC= +25 °C, Unless Otherwise Noted)
Parameter
Small signal gain
Symbol
|S21|
Test Condition
Min
Typical
Max
Units
f = 1575.0 MHz
16.8
dB
f = 1601.8 MHz
16.5
dB
Low linearity
High linearity
–13.0
–4.8
dBm
dBm
0.8
dB
+4
dBm
1 dB Input Compression Point
IP1dB
Noise Figure
NF
Third Order Input Intercept Point (in band)
IIP3
Reverse isolation
|S12|
23.5
dB
Input return loss
|S11|
–6.5
dB
Output return loss
|S22|
–12
dB
Supply current
ICC
4.5
mA
Tone 1 = 1575 MHz,
Tone 2 = 1576 MHz,
PIN = –30 dBm
Shut down current
0.2
Power gain settling time
60
1.0
μA
μs
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
201692C • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • August 24, 2012
3
PRELIMINARY DATA SHEET • SKY65601-477LF LOW-NOISE AMPLIFIER
Typical Performance Characteristics
(VCC = 2.8 V, VBIAS = 1.5 V, TC= +25 °C, Unless Otherwise Noted)
+20
+20
Reverse Isolation, Gain (dB)
Gain, Reverse Isolation (dB)
S12
S21
+15
+10
+5
0
–5
–10
–15
–20
+15
+10
+5
S21
S12
0
–5
–10
–15
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
–20
1.50
6.0
1.52
1.54
Frequency (GHz)
1.56
1.58
1.60
Frequency (GHz)
Figure 3. Gain and Reverse Isolation vs Frequency
(Broadband)
Figure 4. Gain and Reverse Isolation vs Frequency
(Narrow Band)
–5
1.2
Noise Figure (dB)
Input/Output Return Loss (dB)
0
–10
–15
S11
S22
–20
–25
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1.0
0.8
0.6
0.4
1.56
6.0
1.57
1.58
IP1dB (dBm)
IIP3 (dBm)
IP1dB, Low Linearity
IP1dB, High Linearity
1.57
1.58
1.60
1.59
Frequency (GHz)
Figure 7. IP1dB vs Frequency
1.60
1.61
+8
+7
+6
+5
+4
+3
+2
+1
0
–1
–2
–30
1560.0 MHz
1575.0 MHz
1601.8 MHz
1610.0 MHz
–28
–26
–24
–22
–20
Tone Input Power (dBm)
Figure 8. IIP3 vs Frequency
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1.61
Figure 6. Noise Figure vs Frequency
Figure 5. Input and Output Return Loss vs Frequency
0
–2
–4
–6
–8
–10
–12
–14
–16
–18
–20
1.56
1.59
Frequency (GHz)
Frequency (GHz)
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–18
PRELIMINARY DATA SHEET • SKY65601-477LF LOW-NOISE AMPLIFIER
Evaluation Board Description
Package and Handling Information
The SKY65601-477LF Evaluation Board is used to test the
performance of the SKY65601-477LF LNA. The Evaluation Board
schematic diagram is shown in Figure 9. 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.
An assembly drawing for the Evaluation Board is shown in
Figure 10. The layer detail is shown in Figure 11. Layer detail
physical characteristics are noted in Figure 12.
THE SKY65601-477LF 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.
Package Dimensions
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 footprint drawing for the SKY65601-477LF is shown in
Figure 13. Package dimensions for the 6-pin DFN are shown in
Figure 14, and tape and reel dimensions are provided in
Figure 15.
J3
1
LNA Enable
4
5
VEN
HIGH_LIN
3
VEN
2
VCC
1
VCC
6
VCC
C2
C3
RF Input
L1
2
RF_IN
RF_OUT
GND
HIGH_LIN
5
SMA Edge Mount
SMA Edge Mount
3
C1
4
RF Output
High Linearity Mode
Voltage
S2652
Figure 9. SKY65601-477LF Evaluation Board Schematic
Table 5. SKY65601-477LF (QFN Package) Evaluation Board Bill of Materials
Component
C1 (optional)
Size
Value
Vendor
0402
0.1 μF
*** TBD ***
C2 (optional)
0402
22 nF
*** TBD ***
C3
0402
22 nF
*** TBD ***
L1
0402
2.2 nH
Murata
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201692C • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • August 24, 2012
5
HIGH_LIN
VEN
GND
VCC
GND
PRELIMINARY DATA SHEET • SKY65601-477LF LOW-NOISE AMPLIFIER
J23
J1
J2
S2656
Figure 10. SKY65601-477LF Evaluation Board Assembly 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 • SKY65601-477LF LOW-NOISE AMPLIFIER
Layer 1: Top Layer
Layer 2: Ground Layer
Layer 3: Signal Layer
Layer 4: Bottom Layer
S3039
Figure 11. SKY65601-477LF Evaluation Board Layer Detail
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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7
PRELIMINARY DATA SHEET • SKY65601-477LF LOW-NOISE AMPLIFIER
Cross Section
Name Thickness (mm) Material
Tmask
0.010
Solder Resist
L1
0.025
Cu, 1 oz.
Dielectric
0.250
FR4
L2
0.035
Cu, 1 oz
Dielectric
1.000
FR4
L3
0.035
Cu, 1 oz
Dielectric
0.250
FR4
L4
0.200
Cu, 1 oz
Bmask
0.010
Solder resist
S2802
Figure 12. Layer Detail Physical Characteristics
6X 0.835
6X 0.315
Pin 1 Indicator
R0.20
Pin 6
Pin 1
6X 0.200
2X 0.40
0.80
0.500 Pitch
2X 0.625
Exposed Soldering
Area
1.25
All measurements in millimeters
Package Outline
S2925
Figure 13. SKY65601-477LF PCB Layout Footprint
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PRELIMINARY DATA SHEET • SKY65601-477LF LOW-NOISE AMPLIFIER
C
1.25 +0.10/–0.15
Seating Plane
A
2.00
B
Pin 1
Indicator
(0.625)
Detail A
0.02 +0.03/–0.02
R0.20
Pin 1 Indicator
0.50
1.30
0.8 +0.10/–0.15
(0.400)
2X
0.05 C
3
0.05 C
6X
2X
0.05 C
Exposed Pad
6X 0.15 Min.
0.45 + 0.05/–0.04
0.05 C
Top View
Side View
Bottom View
0.165 Min.
0.2 ± 0.05
(0.150)
0.10 M C A B
0.05 M C
Detail A
5
Scale: 125X
6 Places
All measurements are in millimeters.
Dimensioning and tolerancing according to ASME Y14.5M-1994.
Coplanarity applies to the terminals and all other bottom surface metalization.
Dimension applies to metalized terminal. If the terminal has a radius on its end,
the width dimension should not be measured in that radius area.
S2924
Figure 14. SKY65601-477LF 6-Pin DFN Package Dimensions
∅1.5+ 0.1/–0.0
2.00 ± 0.05
(See Note 6)
4.00
∅0.50 ± 0.05
1.75 ± 0.10
4.00
(See Note 4)
B
A
5°
0.65 ± 0.05 (Ko)
3.50 ± 0.05
(See Note 6)
R0.10 Max
A
2.20 ± 0.05 (Bo)
1.50 ± 0.05 (Ao)
R0.1 Typ.
Pin #1
8.00 ± 0.10
0.20 ± 0.05
B
R0.25 Max
B
Notes:
1. Carrier tape: black conductive polycarbonate.
2. Cover tape material: transparent conductive material.
3. ESD surface resistivity is ≥105 and ≤ 108 Ohms/square per EIA, JEDEC
tape and reel specification.
4. Ten sprocket hole pitch cumulative tolerance: ±0.20 mm.
5. Ao and Bo measured on plane 0.30 mm above the bottom of the poacket.
6. Pocket position relative to sprocket hole measured as true position of pocket,
not pocket hole.
7. All measurements are in millimeters.
A
S2776
Figure 15. SKY65601-477LF Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201692C • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • August 24, 2012
9
PRELIMINARY DATA SHEET • SKY65601-477LF LOW-NOISE AMPLIFIER
Ordering Information
Model Name
SKY65601-477LF GPS/GNSS Low-Noise Amplifier
Manufacturing Part Number
SKY65601-477LF
Evaluation Board Part Number
TW18-D820
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