GC4701 - GC4750 ® TM CONTROL DEVICES – LIMITER DIODES RoHS Compliant KEY FEATURES DESCRIPTION 0B This series of diodes meets RoHS requirements per EU Directive 2002/95/EC. Available as packaged devices or as chips for hybrid applications Low Loss Suitable for applications to 18Ghz Excellent flat leakage performance Low 1 dB compression point Gold Doped Diodes for Fast Turn On www.MICROSEMI.com 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. RoHS Compliant1 APPLICATIONS 1 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. Most or our devices are supplied with Gold plated terminations. Other terminal finishes are available on request. Consult factory for details. APPLICATIONS/BENEFITS Receiver protection circuits Amplifier Protection ABSOLUTE MAXIMUM RATINGS AT 25º C (UNLESS OTHERWISE SPECIFIED) Rating Value Unit Ir 0.5 uA T op -55 to +150 ºC GC4701 - GC4750 Maximum Leakage Current @80% of minimum Rated Vb Operating Temperature Symbol Storage Temperature T stg -65 to +150 ºC IMPORTANT: For the most current data, consult our website: www.MICROSEMI.com HU U 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 CONTROL DEVICES – LIMITER DIODES RoHS Compliant P 1 P 2 (Typ) (Max) THERMAL RESISTANCE THERMAL RESISTANCE IR=10μA (Volts) @0V (pF) @-6V (pF) @-50V (pF) @10 mA (Ω) (ns) (˚C/W) (˚C/W) GC4701-00 20 0.20 0.15 -- 1.5 5 20 100 GC4702-00 20 0.50 0.30 -- 1.2 10 12 80 GC4711-00 45 0.20 0.15 -- 1.5 10 15 80 GC4712-00 45 0.50 0.30 -- 1.2 15 10 60 GC4713-00 45 0.70 0.50 -- 1.0 20 6 40 GC4721-00 120 0.20 0.15 -- 1.5 50 1.2 40 GC4722-00 120 0.60 0.30 -- 1.0 50 0.5 20 GC4723-00 120 0.80 0.50 -- 0.5 100 0.3 15 GC4731-00 15 0.12 0.10 -- 2.0 5 30 120 GC4732-00 15 0.20 0.15 -- 1.5 5 20 80 GC4741-00 30 0.12 0.10 -- 2.0 7 20 100 GC4742-00 30 0.20 0.15 -- 1.5 7 15 70 3.0@50mA 300 4 10 GC4750-002 (3) 250 -- -- 0.25 (4) www.MICROSEMI.com CHIP ELECTRICAL PARAMETERS @ 25C (unless otherwise specified) Vb Cj0 Cj-6 Cj-50 Rs TL Model # (Min) (Typ) (Max) (Max) (Typ) (Typ) TYPICAL RF PERFORMANCE @ 25C (unless otherwise specified) Model Number Vb (Min) PEAK POWER PIN @ 1 S TYPICAL LEAKAGE (dBm) (dBm) GC4701 20 +50 +22 +10 0.1 2 GC4702 20 +53 +24 +10 0.2 3 GC4711 45 +53 +27 +15 0.1 3 GC4712 45 +56 +29 +15 0.2 4 GC4713 45 +59 +31 +15 0.2 5 Pout TYPICAL THRESHOLD TYPICAL INS. LOSS MAXIMUM CW POWER (dBm) IL (dB) (Watts) GC4721 120 +60 +39 +20 0.1 5 GC4722 120 +63 +41 +20 0.2 10 15 120 +66 +44 +20 0.2 15 +47 +19 +7 0.1 2 GC4732 15 +50 +22 +4 0.1 3 GC4741 30 +47 +24 +12 0.1 3 GC4742 30 +50 +27 +12 0.1 4 +44 +31 0.2 50 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 ELECTRICALS GC4723 GC4731 Page 2 GC4701 - GC4750 ® TM CONTROL DEVICES – LIMITER DIODES RoHS Compliant POWER LEAKAGE PERFORMANCE 0 dB 15 Micron 4 Micron +40 10 dB Power Out (mw) Pout 20 dB 2 Micron www.MICROSEMI.com +50 TRANSFER CHARACTERISTICS 30 dB 1 dB Compression Point +30 +20 Low Level Ins. Loss +10 +0 +0 +10 +20 +30 +40 +50 +60 +70 Peak Input Power (dBm) Linear Region Compression Hard Limiting Burnout Pin Typical Power Leakage vs I Region Thickness Typical Limiter Transfer Characteristics SERIES RESISTANCE HIGH POWER DUAL LIMITER DESIGN Typical RS Vs IF Curve SCHOTTKY DRIVER (GC9700) 1000 GC4750 RS(Ω) 100 DC BLOCK RF IN 50 Ω 10 1 0.1 0.001 DC BLOCK GC4750 GC4712 RF OUT 50 Ω λ/4 Spacing 0.01 0.1 1 10 100 2 Stage Limiter with Schottky Driver IF(mA) 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 CONTROL DEVICES – LIMITER DIODES RoHS Compliant PACKAGE STYLE 00 DUAL CHIP STYLE 002 www.MICROSEMI.com Notes: Notes: - - Order as GC47xx – 002 Order as GC47xx – 00 PACKAGE SYLE 30 PACKAGE STYLE 115-2 - Notes: Order as GC47xx – 30 - MECHANICAL Notes: Order as GC47xx – 115-2 OTHER PACKAGE STYLES AVAILABLE ON REQUEST CONSULT FACTORY 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 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