Data Sheets - Skyworks Solutions, Inc.

DATA SHEET
SKY16602-632LF: Low-Threshold PIN Diode
Limiter 0.2 to 4.0 GHz
Applications
 Cellular infrastructure
 WLAN, WiMax
 Receiver LNA protection
PIN
 Test instruments
Schottky
RF_IN
Features
RF_OUT
 Optimized for 0.2 to 4.0 GHz operation
 Low limiting threshold (+5 dBm typical)
Y0026
Figure 1. SKY16602-632LF Block Diagram
 Low insertion loss
 Low distortion
Description
 Integrated PIN limiter and Schottky diodes, and DC blocks
The SKY16602-632LF is a fully integrated PIN diode lowthreshold limiter module in a surface-mount package. It is
designed for use as a passive receiver protector in wireless or
other RF systems for frequencies up to 4 GHz. It features a low
limiting threshold, low-insertion loss, and low distortion in a
single Micro Lead-frame Package (MLP).
MLP (2-pin, 2.3 x 2.3 mm) Pb-free 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.
The SKY16602-632LF module is comprised of a PIN limiter diode,
a Schottky diode, and 2 DC blocking caps at the RF ports in a
2-lead MLP. The small package design reduces printed circuit
board area. The module can be tuned using external Surface
Mount Technology (SMT) components for optimal narrow band
performance over the 0.2 to 4.0 GHz operating range.
The module can operate over the temperature range of –40˚C to
+85˚C.
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.
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
4
3
1
2
Y0027
Figure 2. SKY16602-632LF Pinout, 2-Pin MLP
(Top View)
Table 1. SKY16602-632LF Signal Descriptions
Pin
Name
Description
1
RF_IN
RF input, AC coupled.
2
RF_OUT
RF output, AC coupled.
3
GND
Must be connected to chassis ground
4
PAD
Exposed pad (must be isolated from ground)
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
Electrical and Mechanical Specifications
The absolute maximum ratings of the SKY16602-632LF are
provided in Table 2. Electrical specifications for the un-tuned
limiter module are provided in Table 3, and typical performance
characteristics are illustrated in Figures 4 and 5. Electrical
specifications for the 2.45 GHz tuned limiter module are
provided in Table 4, and typical performance characteristics are
illustrated in Figures 6 and 7.
Figures 8 and 9 show the power derating curves for the limiter.
In Figure 8, the temperature is referenced to the bottom of the
QFN package. The power derating curve with the temperature
referenced to the bottom of the printed circuit board is shown in
Figure 9.
Table 2. SKY16602-632LF Absolute Maximum Ratings (Note 1)
Symbol
Parameter
Minimum
Maximum
Unit
RF input power (CW) at TCASE = 85C
PIN
12
W
RF input power (1 s pulse, 10% duty cycle) at TCASE = 85C
PIN
120
W
CW power dissipation at TCASE = 85C
PDIS
0.4
W
Storage temperature
TSTG
−65
150
°C
Operating temperature
TOP
−40
85
°C
Electrostatic discharge:
Charged-Device Model (CDM), Class 4
Human Body Model (HBM), Class 1B
Machine Model (MM), Class A
ESD
1000
250
150
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 these devices are designed to be as robust as possible, electrostatic discharge (ESD) can damage them. These
devices 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 employed at all
times.
Table 3. SKY16602-632LF Electrical Specifications (Untuned Circuit, Reference Figure 1)
(TOP = 25C, ZO = 50 , as Measured in Skyworks Evaluation Board Optimized for Operation at 0.2 to 4.0 GHz, Unless Otherwise Noted)
Parameter
Symbol
Condition
Frequency
Min.
Typ.
Max.
Units
Reverse voltage
VR
20
V
Forward current
IF
50
mA
Insertion loss
IL
PIN= 0 dBm
0.90 GHz
0.3
Return loss
RL
PIN = 0 dBm
0.90 GHz
14
Threshold level
TL
P1dB
0.90 GHz
Saturated CW input power (Note 1)
PIN_CW
Flat leakage power (Note 2)
FL
Recovery time (Note 3)
tR
Thermal resistance
JC
PIN = +10 dBm
5.3
6.0
0.5
dB
dB
6.7
dBm
0.90 GHz
30
dBm
0.90 GHz
6
dBm
0.90 GHz
5
ns
114
C/W
Junction-to-case
Note 1:
Saturated CW input power is defined as the point where the diode series resistance does not change with the rectified current. As the input power increases past this point, output power
will increase until the diode reaches its max power limit.
Note 2:
Flat leakage power is defined as the power level after the limiter has fully turned on and the output pulse reaches a constant level.
Note 3:
Recovery time represents the transition time from the high-loss to low-loss state following the removal of high-power input. RF pulse modulation: 1 s pulse width and 0.1% duty factor.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
Theory of Operation
Tuned Circuit
A limiter prevents overload by allowing RF signals that are
below a certain threshold to pass through, but larger signals
exceeding the threshold are increasingly attenuated. The
SKY16602-632LF has a lower threshold level over a traditional
self-bias limiter circuit with an inductor for a ground return. It
accomplishes this by adding a basic PIN limiter diode (Pin 1) in
parallel to a Schottky diode (Pin 2). The low turn on voltage of
the Schottky diode reduces the threshold level while the PIN
limiter diode protects the Schottky diode at higher power levels.
Therefore, for maximum RF power handling, the RF input signal
is required to be connected to Pin 1. The two internal DC
input/output capacitors provide DC blocking needed for most
applications.
The module may be RF tuned for optional RF match and
insertion loss centered at a target frequency within its normal
band of operation. This is done with the use of external surface
mount components. The schematic diagram in Figure 3 shows
the SKY16602-632LF limiter with a shunt connected capacitor
and inductor tuned for 2.45 GHz. The bill of materials for the
2.45 GHz tuned circuit is shown in Table 4. Electrical
specifications for the 2.45 GHz tuned limiter module are
provided in Table 5.
L1
C1
RF_IN
RF_OUT
Y0028
Figure 3. SKY16602-632LF Schematic
with External Tuning Networks Optimized for 2.45 GHz
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
Table 4. Evaluation Board Bill of Materials for EN33-D946-001 (2.45 GHz Tuned Circuit)
Component
Value
Size
Manufacturer
Mfg. Part Number
Characteristics
C1
15 pF
0402
Murata
GRM1555C1H150J
C0G, 50 V
L1
2.2 nH
0402
Taiyo Uden
HK10052N2S
300 mA, R = 0.13 
Table 5. SKY16602-632LF Electrical Specifications (Tuned to 2.45 GHz Operation, Reference Figure 3)
(TOP = 25C, ZO = 50 , as Measured in Skyworks Evaluation Board Optimized for Operation at 2.45 GHz, Unless Otherwise Noted)
Parameter
Symbol
Condition
Frequency
Min.
Typ.
Max.
Units
Insertion Loss
IL
PIN= 0 dBm
2.45 GHz
0.5
dB
Return Loss
RL
PIN= 0 dBm
2.45 GHz
25
dB
Threshold Level
TL
P1dB
2.45 GHz
5
dBm
Saturated CW input power
(Note 1)
PIN_CW
2.45 GHz
23
dBm
Flat leakage power (Note 2)
FL
PIN = +10 dBm
2.45 GHz
4
dBm
Input Third Order Intercept
IIP3
PIN = –10 dBm/tone, spacing = 10 MHz
2.45 GHz
21
dBm
Recovery Time (Note 3)
tR
2.45 GHz
5
ns
Thermal resistance
JC
114
C/W
Junction to case
Note 1:
Saturated CW input power is defined as the point where the diode series resistance does not change with the rectified current. As the input power increases past this point, output
power will increase until the diode reaches its max power limit.
Note 2:
Flat leakage power is defined as the power level after the limiter has fully turned on and the output pulse reaches a constant level.
Note 3:
Recovery time represents the transition time from the high-loss to low-loss state following the removal of high-power input. RF pulse modulation: 1 s pulse width and 0.1% duty
factor.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
0
0
–2
–2
–4
–4
Insertion Loss (dB)
–6
–8
–10
–12
–14
–16
Insertion Loss
Return Loss
–18
–20
–6
–8
–10
–12
–14
Y0831
Insertion and Return Loss (dB)
Typical Performance Characteristics
(TOP=25 °C, Characteristic Impedance = 50 )
–16
0
1
2
3
4
5
–10
6
–5
0
+5
0
–5
–2
Insertion Loss (dB)
–10
–15
–20
Insertion Loss
–30
3
4
5
–4
–6
–8
–10
Return Loss
2
–12
–10
6
–5
0
Frequency (GHz)
+10
+15
+20
+25
+30
Figure 7. Insertion Loss vs CW Input Power
at 2.45 GHz (Tuned Circuit)
Maximum CW Input Power (Watts)
20
Maximum CW Input Power (Watts)
+5
Power In (dBm)
Figure 6. Small Signal Performance with External Tuning
Networks Optimized for 2.45 GHz
18
16
14
12
10
8
6
4
2
0
10
9
8
7
6
5
4
3
2
1
0
25
45
65
85
105
125
145
165
Bottom of Package Leadframe Temperature (C)
Figure 8. Power Derating Curve (Insertion Loss = 0.3 dB) vs
Temperature on Bottom of Package Leadframe
25
45
65
85
105
125
145
165
Bottom of Circuit Board Temperature (C)
Figure 9. Power Derating Curve (Insertion Loss = 0.3 dB)
vs Temperature on Bottom of EVB Circuit Board
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+30
+25
Y0832
Insertion and Return Loss (dB)
0
1
+20
Figure 5. Insertion Loss vs CW Input Power at 0.90 GHz
without External Tuning
Figure 4. Small Signal Performance without External Tuning
0
+15
Power In (dBm)
Frequency (GHz)
–25
+10
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
Evaluation Board Description
Package and Handling Information
The SKY16602-632LF evaluation boards are used to test the
performance of the limiter. Assembly drawings for the
evaluation boards are shown in Figures 10 and 11. The
evaluation board layer detail is provided in Figure 12.
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 SKY16602-632LF 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 SKY16602-632LF is shown in
Figure 13. Typical case markings are noted in Figure 14.
Package dimensions for the 16-pin QFN are shown in Figure 15,
and tape and reel dimensions are provided in Figure 16.
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.
Figure 10. SKY16602-632LF Evaluation Board Assembly Diagram
Figure 11. SKY16602-632LF Evaluation Board Assembly Diagram (Tuned Circuit)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
Cross Section
Name
Thickness (in)
Material
Top Soldermask
L1
(0.0028)
Cu foil
0.012 ± 0.0006
Rogers RO4003C Core
L2
(0.0014)
Cu foil
Laminate
(Note 1)
FR4 Prepreg
L3
(0.0014)
Cu foil
0.010 ± 0.0006
FR4 Core
(0.0028)
Cu foil
Laminate
Laminate
L4
Bottom Soldermask
Note 1: Adjust this thickness to meet total thickness goal of 0.062 ± 0.005 inches.
S2531
Figure 12. Board Layer Detail Physical Characteristics
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
0.672
4X 0.125
0.532
2X 0.368
1
Package Outline
for Reference
2X 1.350
2X 0.750
3
2X 0.500
Pad Connected
to Ground
2X R0.125
2X 0.896
4
2
0.528
Pad Isolated
from Ground
2X 0.363
2X Exposed
Solder Area
Y1512
All dimensions are in millimeters
Figure 13. SKY16602-632LF PCB Layout Footprint
Pin 1
Indicator
Skyworks Part #
Lot Number
Figure 14. SKY16602-632LF Typical Case Markings
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
0.726 ±0.05
C
Seating Plane
2.3
A
0.255
Pin 1
Indicator
2X 0.20 Min
1
2.3
2X
Detail A
Exposed Pads
0.02 +0.03
–0.02
1 ± 0.05
1.791 ± 0.05
R0.20
Pin 1 Indicator
0.05 C
2X
0.05 C
B
0.05 C
2
2X
0.55 ± 0.05
0.05 C
0.255
2
2X 0.478
0.254
0.736 ±0.05
Top View
Side View
Bottom View
3
0.25 ± 0.05
0.10 M C A B
Notes:
0.05 M C
1. Dimensions and tolerances according to ASME Y14.5M-2009.
2. Coplanarity applies to the exposed heat sink slug as well as the terminals.
3. Dimension applies to metallized terminal. If the terminal has a radius on its end,
the width dimension should not be measured in that area.
4. All measurements are in millimeters.
Detail A
0.4 ± 0.05
Scale: 80X
1 X This Rotation
1 x Rotated 180°
Y0030
Figure 15. SKY16602-632LF 2-PIN MLP Package Dimensions
∅1.50 +0.1
–0
4.00
2.00 ± 0.05 (See Note 3)
4.00 (See Note 1)
Pin 1 Indicator
∅1.00 Min.
B
0.25 ± 0.05
B
1.75 ± 0.10
A
R 0.10 Max.
3.50 ± 0.05
See Note 3
8.0 +0.3
–0.1
Bo
A
R 0.1 Typ.
Ko
Ao
R 0.25 Max.
A
Notes:
1. 10 sprocket hole pitch cumulative tolerance ±0.20 mm.
2. ESD surface resistivity shall be < 1 x 1010 Ohms/Square
per EIA, JEDEC TNR specification.
3. Pocket position relative to sprocket hole measured
as true position of pocket.
4. Ao and Bo are measured on a plane 0.30 mm
above the bottom of the pocket.
5. Carrier tape: black conductive polycarbonate.
6. Cover tape material: transparent conductive material.
7. All measurements are in millimeters.
Ao = 2.60 ± 0.05
Bo = 2.60 ± 0.05
Ko = 0.65 ± 0.05
0 ± 0.04 Bridge Height
Y0070
B
Figure 16. SKY16602-632LF Tape and Reel Dimensions
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DATA SHEET ● SKY16602-632LF: LOW-THRESHOLD PIN DIODE LIMITER
Ordering Information
Model Name
SKY16602-632LF: Low Threshold PIN Diode Limiter
Manufacturing Part Number
Evaluation Board Part Number
SKY16602-632LF
SKY16602-632LF-EVB
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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
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