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| GaAs Abrupt Tuning Varactors Features q q q MA46600 Series V3.00 Case Styles Highest Q Large Capacitance Variation with Voltage Custom Tailored Designs Available on Request Description The MA46600 series of microwave tuning varactors is a family of abrupt junction gallium arsenide devices featuring Q factors in excess of 8000. This series is specifically designed for broadband high Q tuning performance (up to 8000 at -4 volts and 50 MHz) from L through Ka band. Characteristics such as high reliability, low leakage and close capacitance tracking between diodes are typical of these devices. Standard capacitance matching is 10%, but closer matching is available upon request. All diode types are available in a wide selection of ceramic packages as well as in chip form. Applications The MA46600 series of tuning varactors can be used for both broad and narrow band tuning through Ka-band. Typical applications include solid state tuning of VCOs using transistors or Gunns as well as voltage tunable filters and amplifier circuits. The GaAs abrupt junction tuning varactors offer the highest Q of any tuning varactors and are utilized in high frequency applications where Q is premium. Specifications Subject to Change Without Notice. M/A-COM, Inc. North America: Tel. (800) 366-2266 Fax (800) 618-8883 s 1 Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 s Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 GaAs Abrupt Junction Tuning Varactors Electrical Specifications at 25C Model Number MA46600 MA46601 MA46602 MA46603 MA46604 MA46605 MA46607 MA46609 Reverse6 Voltage (Volts) 30 30 30 30 30 30 30 30 CT4 10% (pF) 0.3 0.4 0.5 0.6 0.8 1.0 1.5 2.2 1,2 MA46600 Series V3.00 Q @ -4 Volts (Typical) 8000 7500 7000 6500 6000 5700 5000 4000 Ratio1,2 CT0/CTVB (pF) (Typical) 1.9 2.1 2.5 2.8 3.2 3.4 3.8 4.0 CTO/CTV (RATIO) Notes: 1. Capacitance is measured at 1 MHz on a bridge which has been balanced with shielded test holders connected in place but open circuited. 2. All GaAs tuning varactors are available in any case style shown in this bulletin as well as in chip form. When ordering, specify the desired case by adding the case designation as a suffix to the model number, i.e., MA46601-30. For example, a MA46601-30 specifies a 30 volt tuning diode in a case style 30 with a CT14 between .36 and .44 pF and a Q at -4 volts and 50 MHz 7500. The capacitance values and capacitance ratios are for case style 30. Other case styles or chips will have slightly different values. 3. All junctions are abrupt i.e., y = 0.50 .03. 4. Total capacitance ratios will vary with case choice due to differences in case capacitance (Cp). Figure 1 shows the ratio for the 30 case style. 5. Case parasitics (Cp and Ls) are given for most case styles. 6. Breakdown voltage (VB) is specified at -10 A. Typical Performance Curve CAPACITANCE CHANGE RATIOS FOR GaAs TUNING VARACTORS IN CASE STYLE 30 10 9 8 7 6 5 4 3 UNPACKAGED CHIP CTO = 4.0pF CTO = 2.0pF CTO = 1.0pF Absolute Maximum Ratings at +25C Parameter Temperature: Operating Storage Voltage Power Dissipation (derate linearly to zero at 200C) 2 CTO = 0.5pF -65C to + 175C -65C to + 200C See Breakdown Voltage Cj < 1.0 pF max. @ 50 mW Cj 1.0 pF min. @ 100 mW 1 1 2 3 4 6 8 10 20 30 VOLTAGE (VOLTS) Environmental Ratings Method Temperature, Storage Temperature, Cycling Shock Vibration 1031 1051 2016 2056 Levels See Maximum Ratings 5 cycles, -65 to + 150 C 500 g's 15 g's 20,000 g's 10 days Constant Acceleration 2006 Moisture Resistance 1021 Specifications Subject to Change Without Notice. 2 North America: Tel. (800) 366-2266 Fax (800) 618-8883 s M/A-COM, Inc. Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 s Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 GaAs Abrupt Junction Tuning Varactors MA46600 Series V3.00 Case Styles (See appendix for complete dimensions) Specifications Subject to Change Without Notice. M/A-COM, Inc. North America: Tel. (800) 366-2266 Fax (800) 618-8883 s 3 Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 s Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 |
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