BRO374_09A.pdf

Applications
• Designed for
switching applications
Features
• Low capacitance
• Low resistance
• Fast switching
• Oxide-nitride
passivated
• Durable construction
• High voltage
PIN Beam-Lead Diodes
Skyworks series of silicon PIN beam-lead diodes offer excellent performance in high
frequency hybrid circuit switches. These devices are configured as mesa (DSM8100-000)
or planar diodes (DSG9500-000), both of which have extremely low junction capacitance,
25 pF maximum, which enables these devices to be used has high-isolation series
elements in high frequency switches. Both devices offer very fast switching time and low
insertion loss.
Skyworks broad product portfolio includes PIN diodes as beam-leads, in addition to
packaged and bondable silicon chips, and plastic packaged surface mount devices for
switch and attenuator applications.
Applications
PIN diodes are three layer diodes, comprised of a heavily doped anode (the “P” layer) and
a heavily doped cathode (the “N” layer) separated by a virtually undoped intrinsic layer
(the “I” layer). Under forward bias, charge carriers from the P and the N layers are forced
into the I layer, which reduces its RF impedance. When a reverse bias voltage is applied
across the PIN diodes, all free charge carriers are removed from the I layer, thereby causing
its RF impedance to increase. This variable RF impedance versus DC or low frequency bias
signal allows the diode to be used in RF switching circuits in which the PIN diode is either
forward biased or reverse biased.
Skyworks Green™ products are RoHS (Restriction of Hazardous Substances)compliant, conform to the EIA/EICTA/JEITA Joint Industry Guide (JIG) Level A
guidelines, are halogen free according to IEC-61249-2-21, and contain <1,000
ppm antimony trioxide in polymeric materials.
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Electrical Specifications
Part Number
Voltage
Rating (V)(1)
Maximum Capacitance
f = 1 MHz
(pF)
Maximum Series
Resistance, f = 100 MHz
(Ω)
Typical Minority Carrier Lifetime
IF = 10 mA, IR = 6 mA
(ns)
Outline Drawing
DSG9500-000
100
0.025 @ 50 V
4 @ 50 mA
250
169-001
DSM8100-000
60
0.025 @ 10 V
3.5 @ 10 mA
25
389-003
1. Reverse current is specified at 10 μA maximum at the voltage rating. It is not recommended to drive a PIN diode into avalanche breakdown.
Permanent damage to the diode is likely to occur.
Switching
The circuit below shows a pair of PIN diodes used to
form a single pole, double throw switch. In this switch, a
positive control current typically of the order of 10 mA is
applied to one of the bias inputs to place that side of the
switch into its low insertion loss state, while a negative
bias voltage is applied to the other bias input, forcing
the diode on that side of the switch into its maximum RF
impedance state to produce high isolation on that side of
the switch.
Many other switching circuit variations exist. Please
refer to “Design with PIN Diodes,” available at www.
skyworksinc.com for more information.
Bias
Beam-Lead Pin
Duroid Substrate
50 Ω
Transmission LIne
50 Ω
Glass Bead
Connecting
Lead
Typical SPDT Circuit Arrangement
Beam-Lead Pin
0.005"
Preferred BeamLead Orientation
Bias
Output
C2
C3
Metal Conductor
Input 1
Input 2
C1
D1
D2
C2, C3 — Chip MIS capacitor
C1, C4 — Chip or beam-lead MIS capacitor
D1, D2 DSG9500 beam-lead PIN diode
Typical SPDT Switch
C4
Typical Beam-Lead Mounting
Duroid
Outline Drawings
DSG9500-000 (169-001)
DSG8100-000 (389-003)
Cathode End Has
Blunted Point
0.004 (0.10 mm)
0.002 (0.05 mm)
0.009 (0.23 mm) Min.
0.0115 (0.29 mm) Max.
0.014
(0.36 mm)
Max.
0.007
(0.18 mm)
Max.
0.010
(0.25 mm)
Min.
0.011
(0.28 mm)
Max.
0.035 (0.89 mm)
0.033 (0.84 mm)
0.010
(0.25 mm)
Min.
0.009 (0.23 mm) Min.
0.0115 (0.29 mm) Max.
0.011
(0.28 mm)
Max.
0.0035 (0.09 mm) Min.
0.0070 (0.18 mm) Max.
0.032 (0.81 mm) Min.
0.035 (0.89 mm) Max.
0.004 (0.10 mm)
0.002 (0.05 mm)
0.005
(0.13 mm)
Max.
0.0005
(0.013 mm)
Max.
0.0002 (0.005 mm) Min.
0.0007 (0.018 mm) Max.
Application Notes
For additional information, please refer to the following Application Notes.
Quality/Reliability
Design With PIN Diodes
Diode Chips, Beam-Lead Diodes, Capacitors: Bonding Methods and Packaging
ESD Compliance Testing and Recommended Protection Circuits for GaAs Devices
PIN Diode Basics
Green Initiative™
Through our Green Initiative,™ we are committed to manufacturing products that comply with global
government directives and industry requirements.
Skyworks is continuously innovating RF, analog and mixed-signal ICs. For the latest product introductions and
information about Skyworks, visit our Web site at www.skyworksinc.com
For additional information on our broad overall product portfolio, please contact your local sales office or email us at
[email protected]
Skyworks Solutions, Inc.
20 Sylvan Road, Woburn, MA 01801
USA: (781) 376-3000 • Asia: 886 2 2735 0399 x 990
Europe: 33 (0)1 41443660 • Fax: (781) 376-3100
Email: [email protected] • www.skyworksinc.com
BRO374-09A
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