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| GC4701 - GC4750 TM (R) CONTROL DEVICES - LIMITER DIODES RoHS Compliant DESCRIPTION 0B KEY FEATURES Available as packaged devices or as chips for hybrid applications The GC4700 series diodes are specially processed PIN diodes designed for use in passive or active limiters at frequencies through Ku band. Thirteen categories of devices are offered for flexibility in design of low, medium and high power limiters. Low VB limiters have thinner I regions for faster turn-on time and better flat leakage. Microsemi also manufactures "gold doped" limiters for fastest turn on time. In addition, we manufacture high voltage dual junction limiters for superior peak and CW power handling. This series of diodes meets RoHS requirements per EU Directive 2002/95/EC. www.MICROSEMI.com Low Loss Suitable for applications to 18Ghz Excellent flat leakage performance Low 1 dB compression point Gold Doped Diodes for Fast Turn On APPLICATIONS A diode limiter is a power-sensitive variable attenuator that uses the non-linear properties of the diode to provide an impedance mismatch when sufficient amounts of RF power are incident on the device. The output power is reduced to a level that will not overdrive a receiver, burn out a mixer, etc. For varying input power levels in excess of the diode's threshold level, the limiter's output power tends to remain constant. A passive limiter is one in which the limiter diodes are "turned on" by the RF signal itself. An active limiter is one in which the limiter diodes are "turned on" primarily by an external bias current typically supplied by a Schottky detector diode which senses the incident signal. Since limiter diodes are not designed to dissipate large amounts of power, the limiter must reflect or divert the excess incident power back to the source or to another load (i.e. via a circulator, hybrid coupler, etc.). Limiter diodes may be used in wave guides, coax, microstrip, stripline or other media. Single or cascaded devices may be used, depending on power levels. RoHS Compliant1 Most or our devices are supplied with Gold plated terminations. Other terminal finishes are available on request. Consult factory for details. 1 APPLICATIONS/BENEFITS Receiver protection circuits Amplifier Protection ABSOLUTE MAXIMUM RATINGS AT 25 C (UNLESS OTHERWISE SPECIFIED) Rating Maximum Leakage Current @80% of minimum Rated Vb Operating Temperature Symbol Ir T op Value 0.5 -55 to +150 Unit uA C GC4701 - GC4750 Storage Temperature T stg -65 to +150 C IMPORTANT: For the most current data, consult our website: www.MICROSEMI.comU HU Specifications are subject to change, consult the factory for further information. These devices are ESD sensitive and must be handled using ESD precautions. Copyright 2006 Rev: 2009-01-19 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 1 GC4701 - GC4750 TM (R) CONTROL DEVICES - LIMITER DIODES RoHS Compliant CHIP ELECTRICAL PARAMETERS @ 25C (unless otherwise specified) Vb Cj0 Cj-6 Cj-50 Rs TL Model # (Min) (Typ) (Max) (Max) (Typ) (Typ) IR=10A (Volts) GC4701-00 GC4702-00 GC4711-00 GC4712-00 GC4713-00 GC4721-00 GC4722-00 GC4723-00 GC4731-00 GC4732-00 GC4741-00 GC4742-00 GC4750-002 (3) P 1 P 2 (Typ) THERMAL RESISTANCE (Max) THERMAL RESISTANCE www.MICROSEMI.com @0V (pF) 0.20 0.50 0.20 0.50 0.70 0.20 0.60 0.80 0.12 0.20 0.12 0.20 -- @-6V (pF) 0.15 0.30 0.15 0.30 0.50 0.15 0.30 0.50 0.10 0.15 0.10 0.15 -- @-50V (pF) ------------0.25 (4) @10 mA () 1.5 1.2 1.5 1.2 1.0 1.5 1.0 0.5 2.0 1.5 2.0 1.5 3.0@50mA (ns) 5 10 10 15 20 50 50 100 5 5 7 7 300 (C/W) 20 12 15 10 6 1.2 0.5 0.3 30 20 20 15 4 (C/W) 100 80 80 60 40 40 20 15 120 80 100 70 10 20 20 45 45 45 120 120 120 15 15 30 30 250 TYPICAL RF PERFORMANCE @ 25C (unless otherwise specified) Model Number GC4701 GC4702 GC4711 GC4712 GC4713 GC4721 GC4722 GC4723 GC4731 GC4732 GC4741 GC4742 Vb (Min) 20 20 45 45 45 120 120 120 15 15 30 30 PEAK POWER PIN @ 1 S (dBm) +50 +53 +53 +56 +59 +60 +63 +66 +47 +50 +47 +50 TYPICAL LEAKAGE (dBm) +22 +24 +27 +29 +31 +39 +41 +44 +19 +22 +24 +27 +44 TYPICAL THRESHOLD (dBm) +10 +10 +15 +15 +15 +20 +20 +20 +7 +4 +12 +12 +31 TYPICAL INS. LOSS MAXIMUM CW POWER Pout IL (dB) 0.1 0.2 0.1 0.2 0.2 0.1 0.2 0.2 0.1 0.1 0.1 0.1 0.2 (Watts) 2 3 3 4 5 5 10 15 2 3 3 4 50 ELECTRICALS GC4750 250 +56 @10uS Notes 1) Pulse length 1 microsecond. 2) As measured in style 30 package 3) Available in 002 style or 115-2 package styles 4) CJ for 2 junctions in parallel @ VR=50V Copyright 2006 Rev: 2009-01-19 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 2 GC4701 - GC4750 TM (R) CONTROL DEVICES - LIMITER DIODES RoHS Compliant POWER LEAKAGE PERFORMANCE +50 15 Micron 4 Micron 2 Micron Power Out (mw) 0 dB 10 dB 20 dB TRANSFER CHARACTERISTICS www.MICROSEMI.com Pout +40 30 dB 1 dB Compression Point Low Level Ins. Loss +30 +20 +10 +0 +0 +10 +20 +30 +40 +50 +60 +70 Linear Region Compression Hard Limiting Burnout Peak Input Power (dBm) Pin Typical Power Leakage vs I Region Thickness SERIES RESISTANCE Typical RS Vs IF Curve 1000 Typical Limiter Transfer Characteristics HIGH POWER DUAL LIMITER DESIGN SCHOTTKY DRIVER (GC9700) GC4750 100 DC BLOCK DC BLOCK RS() 10 RF IN 50 GC4750 GC4712 RF OUT 50 1 /4 Spacing 0.01 0.1 1 10 100 0.1 0.001 2 Stage Limiter with Schottky Driver IF(mA) GRAPHS GRAPHS Copyright 2006 Rev: 2009-01-19 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 3 GC4701 - GC4750 TM (R) CONTROL DEVICES - LIMITER DIODES RoHS Compliant PACKAGE STYLE 00 DUAL CHIP STYLE 002 www.MICROSEMI.com Notes: Order as GC47xx - 00 PACKAGE SYLE 30 Notes: - Order as GC47xx - 002 PACKAGE STYLE 115-2 Notes: Order as GC47xx - 30 Notes: Order as GC47xx - 115-2 OTHER PACKAGE STYLES AVAILABLE ON REQUEST CONSULT FACTORY MECHANICAL Copyright 2006 Rev: 2009-01-19 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 4 GC4701 - GC4750 TM (R) CONTROL DEVICES - LIMITER DIODES RoHS Compliant PACKAGE STYLE 35 PACKAGE SYLE 42 www.MICROSEMI.com Notes: - Notes: - Order as GC47xx - 42 Order as GC47xx - 35 OTHER PACKAGE STYLES AVAILABLE ON REQUEST CONSULT FACTORY MECHANICAL Copyright 2006 Rev: 2009-01-19 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 5 |
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