GC4701 MICROSEMI | Alldatasheet
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Technical content
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 1 CONTROL DEVICES – LIMITER DIODES TM ® www.MICROSEMI.com Copyright 2006 Rev: 2009-01-19 RoHS Compliant
0 B DESCRIPTION
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 Ro HS requirements per EU Directive 2002/95/EC.
APPLICATIONS
A diode limiter is a power-sensitive variable attenuator that uses the non-linear properties of the diode to provide an impe dance mismatch when sufficient amounts of RF power are incident on the device. T he 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, t he 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 t he 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. ABSOLUTE MAXIMUM RATINGS AT 25º C (UNLESS OTHERWISE SPECIFIED) Rating Symbol Value Unit Maximum Leakage Current @80% of minimum Rated Vb Ir 0.5 uA Operating Temperature T op -55 to +150 ºC Storage Temperature T stg -65 to +150 ºC IMPORTANT: For the most current data, consult our website: H U www.MICROSEMI.comU Specifications are subject to change, consult the factory for further information. These devices are ESD sensitive and must be handled using ESD precautions. KEY FEATURES 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 RoHS Compliant 1
1 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 GC4701 - GC4750
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 2 CONTROL DEVICES – LIMITER DIODES TM ® www.MICROSEMI.com Copyright 2006 Rev: 2009-01-19 RoHS Compliant ELECTRICALS CHIP ELECTRICAL PARAMETERS @ 25C (unless otherwise specified) Model # Vb (Min) Cj0 (Typ) Cj-6 (Max) Cj-50 (Max) Rs (Typ) TL (Typ) (Typ) (Max) IR=10μA (Volts) @0V (pF) @-6V (pF) @-50V (pF) @10 mA (Ω) (ns) THERMAL RESISTANCE (˚C/W) THERMAL RESISTANCE (˚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 GC4750-002 (3) 250 - - - - 0.25 (4) 3.0@50mA 300 4 10 TYPICAL RF PERFORMANCE @ 25C (unless otherwise specified) Model Number Vb (Min) PEAK POWER PIN @ 1 S (dBm) TYPICAL LEAKAGE Pout (dBm) TYPICAL THRESHOLD (dBm) TYPICAL INS. LOSS IL (dB) MAXIMUM CW POWER (Watts) 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 GC4721 120 +60 +39 +20 0.1 5 GC4722 120 +63 +41 +20 0.2 10 GC4723 120 +66 +44 +20 0.2 15 GC4731 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 GC4750 250 +56 @10uS +44 +31 0.2 50 Notes 1) Pulse length 1 microsecond. 2) As measured in style 30 package 3) Available in 002 style or 115-2 package styles 4) C J for 2 junctions in parallel @ VR=50V
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 3 CONTROL DEVICES – LIMITER DIODES TM ® www.MICROSEMI.com Copyright 2006 Rev: 2009-01-19 RoHS Compliant POWER LEAKAGE PERFORMANCE TRANSFER CHARACTERISTICS +10 +20 +30 +40 +50 Peak Input Power (dBm) Power Out (mw)
15 Micron
4 Micron
2 Micron
Typical Power Leakage vs I Region Thickness Pout Pin Low Level Ins. Loss 1 dB Compression Point Linear Region Compression Hard Limiting Burnout Typical Limiter Transfer Characteristics SERIES RESISTANCE HIGH POWER DUAL LIMITER DESIGN Typical RS Vs IF Curve 0.1 100 1000 0.001 0.01 0.1 1 10 100 IF(mA) RS(Ω) GC4750 GC4750 RF IN 50 Ω RF OUT 50 Ω DC BLOCK DC BLOCK SCHOTTKY DRIVER (GC9700) GC4712 Spacing
2 Stage Limiter with Schottky Driver
λ / 4 GGRRAAPPHHSS
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 4 CONTROL DEVICES – LIMITER DIODES TM ® www.MICROSEMI.com Copyright 2006 Rev: 2009-01-19 RoHS Compliant PACKAGE STYLE 00 DUAL CHIP STYLE 002 Notes: - Order as GC47xx – 00 Notes: - Order as GC47xx – 002 PACKAGE SYLE 30 PACKAGE STYLE 115-2 Notes: - Order as GC47xx – 30 Notes: - Order as GC47xx – 115-2 OTHER PACKAGE STYLES AVAILABLE ON REQUEST CONSULT FACTORY MMEECCHHAANNIICCAALL
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 5 CONTROL DEVICES – LIMITER DIODES TM ® www.MICROSEMI.com Copyright 2006 Rev: 2009-01-19 RoHS Compliant PACKAGE STYLE 35 PACKAGE SYLE 42 Notes: - Order as GC47xx – 35 Notes: - Order as GC47xx – 42 OTHER PACKAGE STYLES AVAILABLE ON REQUEST CONSULT FACTORY MMEECCHHAANNIICCAALL