GC4701-6LP Datasheet DC-15 GHz Surface Mount Limiter PIN Diode Released December 2017 DC-15 GHz Surface Mount Limiter PIN Diode Contents 1 Revision History ............................................................................................................................. 1 1.1 Revision 2.0 ........................................................................................................................................ 1 1.2 Revision 1.0 ........................................................................................................................................ 1 2 Product Overview .......................................................................................................................... 2 2.1 Applications ........................................................................................................................................ 2 2.2 Benefits ............................................................................................................................................... 2 2.3 Key Features ....................................................................................................................................... 3 3 Electrical Specifications .................................................................................................................. 4 3.1 Absolute Maximum Ratings ................................................................................................................ 4 3.2 Device Electrical Parameters .............................................................................................................. 4 3.3 Typical RF Performance ...................................................................................................................... 4 4 Small Signal Characteristics ............................................................................................................ 5 5 Transfer Characteristics ................................................................................................................. 6 5.1 CW Multi-Stage Transfer Characteristics ............................................................................................ 7 5.2 Pulsed Multi-Stage Transfer Characteristics ....................................................................................... 9 6 Application Schematic and Recommended Board Layout ........................................................... 11 7 Package Specifications ................................................................................................................. 12 7.1 Package Dimensions ......................................................................................................................... 12 7.2 Package Outline ................................................................................................................................ 12 8 Evaluation Board Assembly .......................................................................................................... 13 9 Tape-and-Reel Format ................................................................................................................. 14 10 Ordering Information .................................................................................................................. 15 Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 DC-15 GHz Surface Mount Limiter PIN Diode 1 Revision History The revision history describes the changes that were implemented in the document. The changes are listed by revision, starting with the most current publication. 1.1 Revision 2.0 Revision 2.0 was published in December 2017. In Revision 2.0 of this document, the following changes were made: The CW Multi-Stage Transfer Characteristics (see page 7) and Pulsed Multi-Stage Transfer Characteristics (see page 9) sections were added. The Application Schematic and Recommended Board Layout (see page 11) section was added. 1.2 Revision 1.0 Revision 1.0 was published in September 2016. It was the first publication of this document. Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 1 DC-15 GHz Surface Mount Limiter PIN Diode 2 Product Overview This SMT limiting diode element consists of a specially processed PIN diode packaged in a convenient, low-cost plastic outline suitable for standard or co-planar microstrip circuits. Featuring low-loss, low turn-on, and high self-biased isolation, these devices are designed for use in passive or active limiters at frequencies through X band. This surface mount limiter meets RoHS requirements according to EU directives 2011/65/EC and 2002 /95 EC. The following illustration shows the primary functional blocks of the GC4701-6LP device. Figure 1 * Functional Block Diagram 2.1 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, or otherwise compromise the device. 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 that 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 (through a circulator or a hybrid coupler, for example). QFN limiting diode elements may be used in microstrip, co-planar microstrip, or other media. Single or cascaded devices may be used, depending on power levels. 2.2 Benefits The GC4701-6LP device provides the following application benefits: Receiver protection circuits Amplifier protection Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 2 DC-15 GHz Surface Mount Limiter PIN Diode 2.3 Key Features The following are key features of the GC4701-6LP device: Small 1.6 mm x 1.6 mm QFN GC4701-6LP: Output PIN diode Low insertion loss: 0.1 dB at 5 GHz Multistage designs GC4212-6LP: Input PIN diode GC9952-6LP: Schottky driver Suitable for applications to 15 GHz Excellent flat leakage performance Low-P1dB compression point: 10 dBm RoHS compliant Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 3 DC-15 GHz Surface Mount Limiter PIN Diode 3 Electrical Specifications This section details the electrical specifications of the GC4701-6LP device. 3.1 Absolute Maximum Ratings The following table shows the absolute maximum ratings of the GC4701-6LP device. Table 1 * Absolute Maximum Ratings 3.2 Rating Symbol Value Unit Maximum leakage current (at 80% of minimum-rated VB) IR 500 nA Operating temperature TOP -55 to 150 C Storage temperature TSTG -65 to 150 C ESD sensitivity (HBM) Class 1A Moisture sensitivity level MSL 1 Device Electrical Parameters The following table shows the GC4701-6LP device electrical parameters at 25 C where the pulse length is 1 s. Table 2 * Device Electrical Parameters 3.3 Parameter Units Condition Min Typ Max VB V IR = 10 A 20 25 IR nA VR = 16 V CT pF VR = 0 V, f = 1 MHz 0.45 CT pF VR = 10 V, f = 1 MHz 0.35 0.4 RS IF = 10 mA, f = 1 GHz 1.5 2.0 TL ns IF = 10 mA, IR = 6 mA 10 Thermal resistance C/W I heat = 0.5 A 500 50 Typical RF Performance The following table shows the typical RF performance of the GC4701-6LP device at 25 C. Table 3 * Typical RF Performance Parameter Units Condition Min Typ Peak power (PIN) dBm 1 s, 0.001 duty cycle Leakage power (POUT) dBm 1 s, 0.001 duty cycle 22 Threshold dBm P1dB 10 CW power (PIN) dBm Continuous Max 50 33 Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 4 DC-15 GHz Surface Mount Limiter PIN Diode 4 Small Signal Characteristics The following graphs show the small signal characteristic curves of the GC4701-6LP device. Figure 2 * GC4701-6LP Insertion Loss Figure 4 * GC4212-6LP/GC4701-6LP Insertion Loss Figure 3 * GC4701-6LP Input Return Loss Figure 5 * GC4212-6LP/GC4701-6LP Input Return Loss Figure 6 * GC4212-6LP/GC4701-6LP/GC9952-6LP Figure 7 * GC4212-6LP/GC4701-6LP/GC9952-6LP Insertion Loss Input Return Loss Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 5 DC-15 GHz Surface Mount Limiter PIN Diode 5 Transfer Characteristics The following graphs show the transfer characteristics of the GC4701-6LP device. Figure 8 * CW Transfer Characteristics Figure 9 * Pulsed Power Transfer Characteristics Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 6 DC-15 GHz Surface Mount Limiter PIN Diode 5.1 CW Multi-Stage Transfer Characteristics This section details the CW multi-stage transfer characteristics of the GC4701-6LP device. The following drawing shows the application schematic of the GC4212-6LP input PIN diode and the GC4701-6LP output PIN diode. Figure 10 * GC4212-6LP and GC4701-6LP Application Schematic The following graph shows the CW multi-stage transfer characteristics of the GC4212-6LP input PIN diode and the GC4701-6LP output PIN diode. Figure 11 * GC4212-6LP and GC4701-6LP CW Multi-Stage Transfer Characteristics The following drawing shows the application schematic of the GC4212-6LP input PIN diode, GC4701-6LP Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 7 DC-15 GHz Surface Mount Limiter PIN Diode The following drawing shows the application schematic of the GC4212-6LP input PIN diode, GC4701-6LP output PIN diode, and the GC9952-6LP Schottky driver. Figure 12 * GC4212-6LP, GC4701-6LP, and GC9952-6LP Application Schematic The following graph shows the CW multi-stage transfer characteristics of the GC4212-6LP input PIN diode, the GC4701-6LP output PIN diode, and the GC9952-6LP Schottky driver. Figure 13 * GC4212-6LP, GC4701-6LP, and GC9952-6LP CW Multi-Stage Transfer Characteristics Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 8 DC-15 GHz Surface Mount Limiter PIN Diode 5.2 Pulsed Multi-Stage Transfer Characteristics This section details the pulsed multi-stage transfer characteristics of the GC4701-6LP device at 1 s, 0.001 duty cycle. The following drawing shows the pulsed multi-stage application schematic of the GC4212-6LP input PIN diode and the GC4701-6LP output PIN diode. Figure 14 * GC4212-6LP and GC4701-6LP Pulsed Multi-Stage Application Schematic The following graph shows the pulsed multi-stage transfer characteristics of the GC4212-6LP input PIN diode and the GC4701-6LP output PIN diode. Figure 15 * GC4212-6LP input PIN diode and GC4701-6LP Pulsed Multi-Stage Transfer Characteristics The following drawing shows the pulsed multi-stage application schematic of the GC4212-6LP input PIN diode, GC4701-6LP output PIN diode, and the GC9952-6LP Schottky driver. Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 9 DC-15 GHz Surface Mount Limiter PIN Diode Figure 16 * GC4212-6LP, GC4701-6LP, and GC9952-6LP Pulsed Multi-Stage Application Schematic The following graph shows the pulsed multi-stage transfer characteristics of the GC4212-6LP input PIN diode, the GC4701-6LP output PIN diode, and the GC9952-6LP Schottky driver. Figure 17 * GC4212-6LP, GC4701-6LP, and GC9952-6LP Pulsed Multi-Stage Transfer Characteristics Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 10 DC-15 GHz Surface Mount Limiter PIN Diode 6 Application Schematic and Recommended Board Layout The following drawing shows the application schematic of the GC4701-6LP device. Figure 18 * Application Schematic The following drawing shows the recommended board layout of the GC4701-6LP device. Figure 19 * Recommended Board Layout The following table shows the L1 values in nH at different bandwidths. Table 4 * L1 Values Band Width (GHz) L1 (nH) 1-2 40-50 2-4 20-25 4-8 10-20 8-15 8-12 1-12 40-50 Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 11 DC-15 GHz Surface Mount Limiter PIN Diode 7 Package Specifications This section details the package specifications of the GC4701-6LP device. 7.1 Package Dimensions The following illustration shows the package outline of the GC4701-6LP device. Dimensions are in millimeters [inches]. Figure 20 * Package Dimensions 7.2 Package Outline The following illustration shows the package outline of the GC4701-6LP device. For additional packaging information, contact your Microsemi sales representative. Figure 21 * Package Outline Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 12 DC-15 GHz Surface Mount Limiter PIN Diode 8 Evaluation Board Assembly The following illustrations show the evaluation board assembly of the GC4701-6LP device (ordering part number: MSTF0012). The board material is 0.016 Rogers 4003, 0.5 oz. copper cladding on both sides (starting thickness). It has a full-metal backside and an electroless nickel immersion gold (ENIG) finish on both sides. Solder mask is applied to the topside only. Units are in inches. Figure 22 * Evaluation Board Assembly Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 13 DC-15 GHz Surface Mount Limiter PIN Diode 9 Tape-and-Reel Format The following illustration shows the tape-and-reel format of the GC4701-6LP device. Figure 23 * Tape-and-Reel Format Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 14 DC-15 GHz Surface Mount Limiter PIN Diode 10 Ordering Information The following table shows the ordering information for the GC4701-6LP device. Table 5 * Ordering Information Part Number Package GC4701 6LP 1.6 x 1.6 QFN Microsemi Proprietary and Confidential. GC4701-6LP Datasheet Revision 2.0 15 DC-15 GHz Surface Mount Limiter PIN Diode Microsemi makes no warranty, representation, or guarantee regarding the information contained herein or the suitability of its products and services for any particular purpose, nor does Microsemi assume any liability whatsoever arising out of the application or use of any product or circuit. The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be used in conjunction with mission-critical equipment or applications. Any performance specifications are believed to be reliable but are not verified, and Buyer must conduct and complete all performance and other testing of the products, alone and together with, or installed in, any end-products. Buyer shall not rely on any data and performance specifications or parameters provided by Microsemi. It is the Buyer's responsibility to independently determine suitability of any products and to test and verify the same. The information provided by Microsemi hereunder is provided "as is, where is" and with all faults, and the entire risk associated with such information is entirely with the Buyer. 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