Silicon Hyperabrupt Varactor Diode Chips SMV2019 to SMV2023 Features ■ High Q for Low Loss Resonators ■ Low Leakage Current ■ High Tuning Ratio for Wideband VCOs ■ SPICE Model Parameters ■ Small Footprint Chip Design Description nominal) and are fully passivated resulting in low leakage current and high reliability. These varactor chips are intended for assembly in hybrid integrated circuit resonators used in VCOs and analog tuned filters. Alpha Industries’ product line of silicon hyperabrupt junction varactor diode chips are processed using established ion-implantation technology resulting in low RS wide tuning ratio devices with high Q values. These planar chips have a small outline size (12 x 12 mils Electrical Specifications at 25°C Part Number CJ @ 0 V (pF)1 CJ @ 4 V (pF) CJ @ 20 V (pF) Q @ 4V 50 MHz2 1 GHz Ω) RS @ 4 V (Ω IR @17.6 V Contact (nA)3 Diam. (mils)4 Typ. Min. Max. Min. Max. Min. Typ. Max. Nom. SMV2019-000 2.3 0.68 0.88 0.13 0.23 500 4.8 50 2.00 SMV2020-000 3.1 1.13 1.43 0.23 0.33 500 4.1 50 2.50 SMV2021-000 4.5 1.58 1.98 0.32 0.44 500 2.8 50 3.00 SMV2022-000 7.1 2.48 3.08 0.48 0.68 400 2.2 50 3.75 SMV2023-000 10.8 4.28 5.28 0.78 1.08 400 1.4 50 5.00 1. All capacitance values specified at 1 MHz. 2. 50 MHz Q calculated from 1 GHz RS and 1 MHz CJ. 3. VB at 10 µA specified at 22 V Min. 4. Outline drawing 149-801. Outline Drawing Absolute Maximum Ratings 149-801 Characteristic Reverse Voltage (VR) ANODE METALIZED GOLD DOT 0.002 (0.051 mm) DIA. MIN. 0.010 (0.254 mm) MIN. 0.014 (0.356 mm) MAX. SQ. Value 22 V Forward Current (IF) 100 mA Power Dissipation at 25°C (PD) 250 mW Operating Temperature (TOP) -55°C to +150°C Storage Temperature (TST) -65°C to +200°C SILICON 0.004 (0.127 mm) MIN. 0.006 (0.152 mm) MAX. CATHODE METALIZED BACK CONTACT - GOLD Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 8/01A 1 Silicon Hyperabrupt Varactor Diode Chips SMV2109 to SMV2023 12 11 10 9 8 7 6 5 4 3 2 1 0 6 SMV2019-000 Series Resistance (Ω) Capacitance (pF) Typical Performance Data SMV2023-000 SMV2022-000 SMV2021-000 SMV2020-000 SMV2019-000 5 10 15 4 SMV2021-000 SMV2022-000 3 SMV2023-000 2 1 20 0 4 8 12 16 20 Reverse Voltage (V) Reverse Voltage (V) Capacitance vs. Reverse Voltage Series Resistance vs. Voltage @ 1 GHz SPICE Model Typical Capacitance Values 0.0 SMV2020-000 0 0 VR (V) 5 SMV2019 SMV2020 CJ (pF) CJ (pF) 2.25 3.14 SMV2021 CJ (pF) 4.48 SMV2022 SMV2023 CJ (pF) CJ (pF) 7.08 10.76 PORT P_anode port = 1 DIODEM Diode_Model IS = 1.00e-14 RS = RS N = 1, 2 TT = 0 CJO = CJO M=M VJ = V J EG = 1.11 XTI = 3 KF =0 AF =1 FC = 0.5 BV = 22 IBV = 1e-5 ISR = 0 NR = 2 IKF = 0 NBV = 1 IBVL = 0 NBVL = 1 TBV1 = 0 TNOM = 27 FFE = 1 0.5 1.79 2.5 3.57 5.66 8.76 1.0 1.53 2.16 3.09 4.88 7.67 2.0 1.19 1.72 2.45 3.89 6.31 3.0 0.99 1.44 2.09 3.19 5.38 4.0 0.84 1.24 1.83 2.71 4.75 5.0 0.71 1.07 1.60 2.30 4.21 6.0 0.57 0.90 1.37 1.87 3.66 7.0 0.46 0.74 1.17 1.52 3.17 8.0 0.38 0.61 0.97 1.25 2.68 9.0 0.33 0.52 0.81 1.07 2.25 10.0 0.29 0.46 0.69 0.94 1.89 11.0 0.26 0.42 0.61 0.85 1.66 12.0 0.24 0.38 0.56 0.78 1.49 13.0 0.23 0.36 0.51 0.73 1.35 14.0 0.21 0.34 0.48 0.69 1.24 15.0 0.20 0.32 0.45 0.65 1.16 16.0 0.19 0.31 0.43 0.62 1.10 17.0 0.19 0.29 0.41 0.59 1.04 18.0 0.18 0.28 0.39 0.57 0.99 0.17 0.27 0.38 0.55 0.95 Part Number CJO (pF) VJ (V) M 19.0 RS Ω) (Ω 20.0 0.16 0.26 0.36 0.54 0.91 SMV2019 2.3 3.5 1.40 4.8 SMV2020 3.3 3.6 1.30 4.1 SMV2021 4.5 3.9 1.34 2.8 SMV2022 7.1 4.0 1.40 2.2 SMV2023 10.8 4.6 1.45 1.4 RES RS R = RS DIODE Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear PORT P_Cathode port = 2 CV = CJ0 1+ VR VJ M + CP SPICE model parameters extracted from measured characteristics may not reflect exact physical or electronic properties. See application note APN1004. 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 8/01A