Low Capacitance Silicon Hyperabrupt Varactor Diodes CKV2010 Series (exDKV6550 Series) Features Octave Frequency Tuning from 0 to 10 Volts @ Linearity + 1.5% for a 1.7:1 Tuning Ratio without Compensation Network @ Offered in Package Styles Suitable for a Wide Range of Applications Maximum Ratings Reverse Voltage, Vr: 22V Forward Current, Ip: 100 mA Power Dissipation at 25C: 250 mW Operating Temperature: 55 to 150C Storage Temperature: 65 to 200 C Description Alpha microwave hyperabrupt diodes are designed for linear wideband tuning of microwave filters, resonators, and local oscillators. Linear tuning, not possible with conventional abruptjunction tuning diodes, is accomplished by maintaining an accurate silicon doping profile using ion-implantation precision control techniques. This series of hyperabrupt diodes offer wide bandwidth linear tuning with low bias voltage. For example, a 20 volt hyperabrupt diode can provide the same tuning variation as a 90volt abruptjunction diode, as illustrated in Figure 3. When capacitance and tuning ratio values are equal, a hyperabrupt diode will have a 0 (measured at 4 volts, 50 MHz) approximately 1/2 to 1/3 that of an abrupt junction diode. This inherent 0 reduction is > = % often outweighed by the advantages of linearity and low bias requirements of hyperabrupt diodes. These diodes are available in most of the Alpha ceramic and glass packages. They can be supplied in chip form or mounted on a variety of chip carriers. All chips are passivated with silicon dioxide for high reliability, low leakage current and low post tuning drift. The characteristics of the following diodes in the standard Alpha 023-001 ceramic package (Cp=0.22 pF) are shown. Hyperabrupt diodes are offered in various package styles to suit current applications. See the following tables for further details. Capacitance values change slightly due to variations in package parasitics. 4-20 ALPHA INDUSTRIES, INC. * 20 SYLVAN ROAD, WOBURN, MA 01801 TEL: (617) 935-5150 FAX: (617) 624-4579 Electrical Specifications Reverse Breakdown Voltage, VBR (10 uA): Reverse Leakage Current, IR (17.6 V): 22 V Minimum 50 nA Maximum Low Capacitance Silicon Hyperabrupt Varactor Diodes CKV2010 Series Capacitance @ 4V Capacitance @ 20V Q @ 4V, 50 Cpack (pF) (pF) MHz Previous Catalog Catalog Part Number (pF) Min | Max Min | Max Min Part Number Square Passivated Silicon Chip 2 CKV2010-19 - 0.68 0.13 0.23 500 CKV2010~-19 CKV2010-20 - 1.13 0.23 0.33 500 CKV2010-20 CKV2010-21 - 1.58 0.32 0.44 500 CKV2010-21 CKV2010-22 _ 2.48 0.48 0.68 400 CKV2010-22 CKV2010-23 - 4.28 0.78 1.08 400 CKV2010-23 Coaxial Hermetic Ceramic Package Outline Drawing Number: 023-001 CKV2010-19-023-001 0.22 0.90 0.35 0.45 500 DKV6550-06 CKV2010-20-023-001 0.22 1.35 0.45 0.55 500 DKV6550-12 CKV2010-21-023-001 0.22 1.80 0.54 0.66 500 DKV6550-18 CKV2010-22-023--001 0.22 2.70 0.70 0.90 400 DKV6550-24 CKV2010-23-023-001 0.22 4.50 1.00 1.30 400 DKV6550--30 Axial Leaded Glass Package Outline Drawing Number: 075-001 pe CKV2010-19-075-001 0.10 0.78 0.23 0.33 500 DKV3801-55 CKV2010-20-075-001 0.10 1.23 0.33 0.43 500 DKV3801-56 CKV2010-21-075-001 0.10 1.68 0.42 0.54 500 DKV3801-57 CKV2010-22-075-001 0.10 2.58 0.58 0.78 400 DKV3801-58 CKV2010-23-075-001 0.10 4.38 0.88 1.18 400 DKV3801-59 Coaxial Ceramic Package Outline Drawing Number: 168-001 CKV2010--19-168--001 0.18 0.86 0.31 0.41 500 DKV3802-55 CKV2010-20-168-001 0.18 1.31 0.41 0.51 500 DKV3802-56 CKV2010-21-168-001 0.18 1.76 0.50 0.62 500 DKV3802-57 CKV2010-22--168-001 0.18 2.66 0.66 0.86 400 DKV3802-58 CKV2010-23-168-001 0.18 4.46 0.96 1.26 400 DKV3802-59 Stripline Hermetic Ceramic Package Outline Drawing Number: 325-011 CKV2010--19-325-011 0.12 0.80 1.00 0.25 0.35 500 DKV3803-55 CKV2010-20-325-011 0.12 1.25 1.55 0.35 0.45 500 DKV3803-56 CKV2010-21-325-011 0.12 1.70 2.10 0.44 0.56 500 DKV3803-57 CKV2010-22-325-011 0.12 2.60 3.20 0.60 0.80 400 DKV3803-58 CKV2010-23-325-011 0.12 4.40 5.40 0.90 1.20 400 DKV3803-59 Outline Drawing Number: 120-011 CKV2010-19-130-011 0.15 0.83 1.03 0.28 0.38 500 DKV3804-55 CKV2010-20-130-011 0.15 1.28 1.58 0.38 0.48 500 DKV380456 CKV2010-21-130-011 0.15 1.73 2.13 0.47 0.59 500 DKV3804-57 CKV2010-22-130-011 0.15 2.63 3.23 0.63 0.83 400 DKV3804-58 CKV2010-23-130-011 0.15 4.43 5.43 0.93 1.23 400 DKV380459 Surface Mountable SOT-23 Package # SMV 1204-04 0.13 2.50 3.30 0.60 0.85 500 SMV1204-04 SMV120405 0.13 4.50 5.50 0.90 1.20 500 SMV1204-05 ALPHA INDUSTRIES, ING. + 20 SYLVAN ROAD, WOBURN, MA 01801 TEL: (617) 935-5150 FAX: (617) 824-4579 4-21