Diode. CLA4609-086LF Datasheet

CLA4609-086LF Datasheet PDF

Part CLA4609-086LF
Description Surface Mount Limiter Diode
Feature CLA4609-086LF; DATA SHEET CLA4609-086LF: Surface Mount Limiter Diode Applications • Low loss, high power limiters •.
Manufacture Skyworks
Datasheet
Download CLA4609-086LF Datasheet




CLA4609-086LF
DATA SHEET
CLA4609-086LF: Surface Mount Limiter Diode
Applications
Low loss, high power limiters
Receiver protectors
Features
Low thermal resistance: 25 °C/W
Typical threshold level: +36 dBm
Low capacitance: 0.6 pF
Low profile, ultra-miniature QFN (3-pin, 2 x 2 mm) package
(MSL1, 260 °C per JEDEC J-STD-020)
Figure 1. CLA4609-086LF Block Diagram
Description
The CLA4609-086LF is a surface mountable, low capacitance
silicon PIN limiter diode designed as a shunt connected PIN diode
for high power limiter applications from 10 MHz to over 6 GHz.
Maximum resistance at 100 mA is 1.5 Ω and maximum
capacitance at 30 V is 0.6 pF. The combination of low junction
capacitance, low parasitic inductance, low thermal resistance,
and nominal 28 μm I-region width, makes the CLA4609-086LF
useful in large signal limiter applications. The threshold level is
+36 dBm, nominal.
A block diagram of the CLA4609-086LF is shown in Figure 1. The
absolute maximum ratings of the CLA4609-086LF are provided in
Table 1. Electrical specifications are provided in Table 2.
Typical performance characteristics of the CLA4609-086LF are
provided in Table 3 and illustrated in Figure 4.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201247I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 13, 2013
1



CLA4609-086LF
DATA SHEET • CLA4609-086LF SURFACE MOUNT LIMITER DIODE
Table 1. CLA4609-086LF Absolute Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Units
Reverse voltage
VR 250 V
Forward current @ 25 °C
IF
1.5 A
CW power dissipation @ 85 °C
PD
2.5 W
Peak pulse power dissipation @ 85 °C (10% duty cycle)
25 W
Storage temperature
TSTG
65 +200
°C
Junction temperature
TJ
175 °C
Operating temperature
TA
40 +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 2. CLA4609-086LF Electrical Specifications (Note 1)
(TA = +25 °C Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Reverse current
IR VR = 250 V
Capacitance
CT f = 1 MHz, VR = 30 V
Series inductance
LS
Resistance
RS f = 500 MHz, IF = 10 mA
Carrier lifetime
TL IF = 10 mA
I region width
W
CW thermal resistance
θJC Junction-to-case
Peak thermal resistance
θP Single 1 μs pulse width,
junction-to-case (10%
duty cycle)
Note 1: Performance is guaranteed only under the conditions listed in this Table.
Min
Typical
0.3
1.1
20
25
2.5
Max
10
0.6
1.5
Units
μA
pF
nH
Ω
μs
μm
°C/W
°C/W
Table 3. Typical Performance @ 25 °C
Part Number
Insertion Loss
@ –10 dBm
(dB)
Input Power for
1 dB Loss
(dBm)
Maximum Pulsed
Input Power
(dBm)
Output @ Maximum
Pulsed Input
(dBm)
CLA4609-086LF
0.3
+36 +69
+50
Notes:
Insertion loss for CLA4609-086LF @ 2.1 GHz.
Limiter power results @ 1 GHz for shunt connected, single limiter diode and DC return in 50 Ω line.
Maximum pulsed power for 1 μs pulse and 0.1% duty factor with chip @ 25 °C heat sink. Derate linearly to 0 W @ 175 °C.
Maximum CW input power @ 25 °C heat sink. Derate linearly to 0 W @ 175 °C.
Recovery time to insertion loss from limiting state.
Maximum CW
Input power
(W)
16
Recovery Time
(ns)
1000
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2 June 13, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201247I



CLA4609-086LF
Functional Description
The PIN limiter diode can be described as an incident power
controlled, RF variable resistor. When there is no large input
signal present, the impedance of the limiter diode is at its
maximum, which produces minimum insertion loss, typically
less than 0.3 dB. The presence of a large input signal
temporarily forces the impedance of the diode to a much lower
value, which produces an impedance mismatch that reflects the
majority of the input signal power back towards its source.
During the limiting process, a DC current is generated by the PIN
limiter diode. The current is not the result of rectification, but is
the result of charge carriers being forced into the I layer by the
forward alternations of the large input signal. A complete path
must be provided for this current or the diode is not capable of
limiting. Therefore, an RF choke or similar structure must be
provided to complete the path for DC current flow.
DATA SHEET • CLA4609-086LF SURFACE MOUNT LIMITER DIODE
The DC block capacitors shown in Figure 2 are optional; they
protect the limiter diode from external DC voltage that may be
present in the source or load circuits.
A cross section of the suggested printed circuit board design is
shown in Figure 3. The via shown in this view is critical, both for
electrical performance and for thermal performance. It is
recommended that several vias should be placed under the
entire footprint of the exposed paddle (pin 2) to minimize both
electrical inductance to the system ground and thermal
resistance to the system heat sink.
For more information about the operation of limiter diodes, refer
to the Skyworks Application Note, PIN Limiter Diodes in Receiver
Protectors, document number 200480.
Figure 2. Single Stage Limiter Circuit
Figure 3. Cross-Sectional View of Suggested Printed Circuit Board
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201247I • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 13, 2013
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