Download DDC, CDC, SMS Series: Zero Bias Silicon Schottky Barrier Detector Diodes Applications Features

DATA SHEET
DDC, CDC, SMS Series: Zero Bias Silicon Schottky Barrier
Detector Diodes
Applications
x Microwave Integrated Circuits
x Detectors
Features
x High sensitivity
x Low video impedance
x Packages rated MSL1, 260 qC per JEDEC J-STD-020)
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances) compliant packaging.
Description
Skyworks packaged, beam-lead and zero-bias Schottky barrier
detector diodes are designed for applications through the K band.
The choice of barrier metal and process techniques results in a
group of diodes with a wide selection of video impedance ranges.
Packaged diodes are suitable for use in waveguide, coaxial, and
stripline applications. Beam-lead and chip diodes can also be
mounted in a variety of packages.
The DDC, CDC, and SMS series of Schottky diodes are especially
well suited for use in Microwave Integrated Circuit (MIC)
applications where the chip and wire approach is more desirable.
Mounted beam-lead diodes can be easily used in MIC, stripline, or
other such circuitry.
Applications
The DDC, CDC, and SMS series of zero-bias Schottky diodes are
designed for detector applications through 26 GHz and are useful
up to 40 GHz. They require no bias and operate efficiently even at
tangential signal power levels. Since they require no bias, noise is at
a minimum. A low video impedance means a short R-C time
constant and, therefore, wide video bandwidth and excellent pulse
fidelity.
As power monitors, these diodes may also be used to directly drive
metering circuits even at low power input levels. These diodes are
categorized by Tangential Signal Sensitivity (TSS), voltage output,
and video impedance for detector applications.
TSS is a parameter that best describes the use of a diode as a video
detector. It is defined as the amount of signal power, below a one
milliwatt reference level, required to produce an output pulse with
an amplitude sufficient to raise noise fluctuations by an amount
equal to the average noise level. TSS is approximately 4 dB above
the minimum detectable signal.
Voltage output is another useful parameter since it can be used in
the design of threshold detectors and power monitor circuits. Since
voltage output is a function of the diode’s video impedance, a
different minimum value is specified for each video impedance
range.
The absolute maximum ratings for the DDC, CDC, and SMS series
of Schottky diodes is provided in Table 1. Electrical and physical
specifications are provided in Table 2. Package types for the
epoxy and hermetic diodes are listed in Table 3.
Typical performance characteristics are shown in Figures 1
through 8. Typical video detector circuits are shown in Figure 9.
The multi-octave, high-sensitivity circuit would be used in Electronic
Countermeasures (ECM) and similar applications. An RF matching
structure that presents maximum power at the diode junction must
be incorporated to ensure maximum sensitivity.
The broadband low-sensitivity circuit would be used where a low
input VSWR is required. In this circuit, low VSWR is accomplished by
the use of the 50 Ω terminating resistor. Sensitivity, however, is
degraded by typically 10 dB from the multi-octave, high-sensitivity
circuit. The most common use for this circuit is in a broadband, flat
detector used primarily in the laboratory.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200843B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 7, 2009
1
DATA SHEET • DDC, CDC, SMS SERIES: ZERO BIAS SCHOTTKY DIODES
Table 1. DDC, CDC, SMS Diode Series Absolute Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Units
V
Reverse voltage
VR
2
Forward current
IF
100
mA
RF input power @ TA = 25 °C
PD
75
mW
Storage temperature
TSTG
–60
+200
qC
Operating temperature
TA
–55
+150
qC
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. The
DDC, CDC, SMS series of Schottky diodes are Class 0 Human Body Model (HBM) ESD devices.
Table 2. DDC, CDC, SMS Diode Series Electrical Specifications (Note 1)
(TA = +25 qC, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted)
Part Number
Min. Detected Output
Voltage, EO
(mV)
Video Impedance, ZV
(Ω)
Max. TSS
(dBm)
Outline
Drawing
DDC2353-000
8
2000 to 5000
–52
491-006
DDC2354-000
15
5000 to 15000
–56
491-006
CDC7630-000
8
2000 to 5000
–52
571-006
CDC7631-000
15
5000 to 15000
–56
571-006
Note 1: Performance is guaranteed only under the conditions listed in this Table and is not guaranteed over the full operating or storage temperature ranges. Operation at elevated
temperatures may reduce reliability of the device.
Table 3. Epoxy and Hermetic Packaged Zero Bias Schottky Detector Diodes
Part Numbers/Outline Drawings
Epoxy Stripline
250
Hermetic Pill
207
Hermetic Pill
203
Hermetic
109
Hermetic
220
DDC2353-250
CDC7630-207
CDC7630-203
SMS7630-109
DDC2353-220
DDC2354-250
CDC7631-207
CDC7631-203
SMS7619-109
DDC2354-220
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
2
October 7, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200843B
DATA SHEET • DDC, CDC, SMS SERIES: ZERO BIAS SCHOTTKY DIODES
Typical Performance Characteristics
+60
Tangential Signal Sensitivity (dBm)
Forward Current (mA)
10.0000
1.0000
Low Video Impedance Types
0.1000
0.0100
High Video Impedance Types
0.0010
0.0001
0
5
10
15
20
25
30
35
+58
+56
+54
Test Condition:
Video Bandwidth = 10 MHz
+52
+50
100
40
1000
10000
100000
Video Impedance (Ω)
Forward Voltage (mV)
Figure 1. Zero BIas Schottky Detector Diodes
Typical Forward DC Characteristics
Figure 2. Typical Zero Bias X-Band Detector Diodes
TSS vs Video Impedance
800
10000.00
100 kΩ
700
Output Voltage (mV)
Output Voltage (mV)
1000.00
100.00
ZV = 10 kΩ
10.00
ZV = 1 kΩ
1.00
ZV = 400 kΩ
0.10
0.01
–50
–40
–30
–20
Test Conditions:
f = 9.375 GHz
Load Resistance = 10 MΩ
–10
0
+10
+20
Input Power (dBm)
Figure 3. Typical Zero Bias X-Band Detector Diodes
Output Voltage vs Input Power as a Function of Video Impedance
50 kΩ
10 kΩ
600
500
400
1 kΩ
300
–40 –25 –10
+5 +20 +35 +50 +65 +80 +95
Temperature (°C)
Figure 4. Output Voltage vs Temperature
Over Load Resistance @ 0 dBm
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200843B • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 7, 2009
3
DATA SHEET • DDC, CDC, SMS SERIES: ZERO BIAS SCHOTTKY DIODES
200
1000.00
180
+25 °C
50 kΩ
Output Voltage (mV)
Output Voltage (mV)
100.00
–40 °C
10.00
+95 °C
1.00
100 kΩ
160
10 kΩ
140
120
100
80
0.10
1 kΩ
60
40
–40 –25 –10
0.01
–30
–20
–10
0
+5 +20 +35 +50 +65 +80 +95
Temperature (°C)
Input Power (dBm)
Figure 5. Output Voltage vs Input Power Over Temperature
(Load Resistance = 1 kΩ)
Figure 6. Output Voltage vs Temperature Over Load Resistance
@ –10 dBm
5
1000
100 kΩ
Output Voltage (mV)
Output Voltage (mV)
4
+95 °C
100
+25 °C
–40 °C
10
50 kΩ
3
10 kΩ
2
1
1 kΩ
1
–30
0
–20
–10
0
Input Power (dBm)
Figure 7. Output Voltage vs Input Power Over Temperature
(Load Resistance = 100 kΩ)
–40 –25 –10
+5 +20 +35 +50 +65 +80 +95
Temperature (°C)
Figure 8. Output Voltage vs Temperature Over Load Resistance
@ –30 dBm
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
4
October 7, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200843B
DATA SHEET • DDC, CDC, SMS SERIES: ZERO BIAS SCHOTTKY DIODES
RF Bypass
Input
Video Output
Load Resistor
DC Return
Multi-Octave: High-Sensitivity
RF Bypass
Input
Video Output
R = Z0
Load Resistor
Broadband: Low-Sensitivity
Figure 9. Typical Video Detector Circuits
0.35 Max. Typ.
0.43 ± 0.05
0.60 Typ.
2
1
0.35 Max. Typ.
Cathode
Pin 1 Indicator
0.45 ± 0.05 2 Plcs.
Bottom View
1
1.83 ± 0.10
2
1.00 (Max.)
Gold-Plated
Kovar Lid
XX
1.43 ± 0.10
0.15 Typ.
Top View
Side View
All dimensions in mm
Figure 10. -109 Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200843B • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 7, 2009
5
DATA SHEET • DDC, CDC, SMS SERIES: ZERO BIAS SCHOTTKY DIODES
Schematic
N-Type
1
1
0.050 (1.27 mm)
0.040 (1.02 mm)
2
2
0.055 (1.40 mm)
0.051 (1.30 mm)
Dia.
Dimensions are in inches (millimeters shown in parentheses)
S1569
Figure 11. -203 Package Dimensions
Schematic
P-Type
0.064 (1.63 mm)
0.060 (1.52 mm)
Dia. 2 Plcs.
Schematic
N-Type
0.086 (2.18 mm)
Max. Dia.
Metal
Ceramic
0.200 (5.08 mm)
Nom.
0.076 (2.10 mm)
±0.006 (1.78 mm)
Metal
0.062 (1.63 mm)
±0.002 (1.52 mm)
2 Plcs
Dimensions are in inches (millimeters shown in parentheses)
Figure 12. -207 Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
6
October 7, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200843B
DATA SHEET • DDC, CDC, SMS SERIES: ZERO BIAS SCHOTTKY DIODES
Schematic
2
1
-011 (220)
0.185 (4.70 mm)
0.145 (3.68 mm)
3 Plcs.
0.068 (1.73 mm)
0.064 (1.63 mm)
Dia.
2
1
0.022 (0.56 mm)
0.018 (0.46 mm)
3 Plcs.
Colored Dot
Denotes Cathode
0.070 (1.78 mm)
Sq.
0.042 (1.07 mm)
0.028 (0.71 mm)
0.005 (0.13 mm)
0.003 (0.08 mm)
3 Plcs.
Dimensions are in inches (millimeters shown in parentheses)
Figure 13. -220 Package Dimensions
Schematic
1
2
0.100 (2.54 mm)
Dia.
0.090 (2.28 mm)
0.110 (2.79 mm)
2 Plcs.
Colored Dot
Denotes Cathode
1
2
0.018 (0.45 mm)
0.122 (0.55 mm)
2 Plcs.
50 Deg.
40 Deg.
Epoxy Encapsulation
Au-Plated Leads
0.018 (0.45 mm)
0.122 (0.55 mm)
0.003 (0.08 mm)
0.005 (0.13 mm)
0.050 (1.27 mm)
Max.
Dimensions are in inches (millimeters shown in parentheses)
Figure 14. -250 Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200843B • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 7, 2009
7
DATA SHEET • DDC, CDC, SMS SERIES: ZERO BIAS SCHOTTKY DIODES
0.013 (0.33 mm)
0.011 (0.28 mm)
0.011 (0.28 mm)
0.009 (0.23 mm)
0.006 (0.15 mm)
0.004 (0.10 mm)
2 Plcs.
0.009 (0.23 mm)
0.007 (0.18 mm)
0.009 (0.23 mm)
0.007 (0.18 mm)
0.006 (0.015 mm)
0.003 (0.005 mm)
0.0025 (0.06 mm)
Max.
Top View
Schematic
Dimensions are in inches (millimeters shown in parentheses)
Figure 15. 491-006 Package Dimensions
Cathode/Bonding Pad
Diameter 0.0035–0.0045
0.0095 (0.241 mm)
0.0115 (0.292 mm)
0.0095 (0.241 mm)
0.0115 (0.292 mm)
0.0085 (0.216 mm)
0.0065 (0.165 mm)
Backside Contact (Anode)
Gold Metallization
Dimensions are in inches (millimeters shown in parentheses)
Figure 16. 571-006 Package Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
8
October 7, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200843B
DATA SHEET • DDC, CDC, SMS SERIES: ZERO BIAS SCHOTTKY DIODES
Copyright © 2002-2009 Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by
Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the
information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to
update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or
information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions
of Sale.
THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A
PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY
DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS
SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION,
LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury,
death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any
damages resulting from such improper use or sale.
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
products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for
applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands
and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com,
are incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
200843B • Skyworks Proprietary and Confidential information • Products and Product Information are Subject to Change Without Notice • October 7, 2009
9