Hyperabrupt Junction Tuning Varactors SMV1142–SMV1148 Features ■ Frequency Linear Design ■ Low Series Resistance ■ Available in the SOD-323 and SC-79 Packages ■ Designed for High Volume Commercial Applications ■ SPICE Models are Available Description The SMV1142–SMV1148 series of silicon hyperabrupt junction varactor diodes are specifically designed with an increasing gamma vs. voltage characteristic. This characteristic will result in improved VCO frequency-voltage linearity, in comparison to a conventional hyperabrupt junction varactor. This family of varactors is characterized for capacitance and resistance over temperature. SPICE models are provided. Single SC-79 Absolute Maximum Ratings Characteristic Value Reverse Voltage (VR) 12 V Forward Current (IF) 20 mA Power Dissipation (PD) 250 mW Storage Temperature (TST) -55°C to +150°C Operating Temperature (TOP) -55°C to +125°C Single SOD-323 ♦ SMV1142-011 ♦ SMV1143-011 ♦ SMV1144-011 ♦ SMV1145-079 ♦ SMV1145-011 ♦ SMV1146-011 ♦ SMV1147-011 ♦ SMV1148-011 LS = 0.7 nH LS = 1.5 nH ♦ Available through distribution. For other packages or configurations, please contact the factory. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A 1 Hyperabrupt Junction Tuning Varactors SMV1142–SMV1148 Electrical Specifications at 25°C Part Number CT @ 1 V (pF) CT @ 3V (pF) CT @ 6V (pF) CT @ 1 V CT @ 3 V (Ratio) CT @ 1 V CT @ 6 V (Ratio) RS @ 3 V 500 MHz Ω) (Ω Q @ 3V 50 MHz Min. Max. Typ. Typ. Min. Max. Min. Max. Max. Typ. SMV1142 8.20 10.00 5.8 3.5 1.50 1.65 2.43 2.93 0.70 800 SMV1143 11.60 14.20 8.2 4.9 1.50 1.65 2.45 2.95 0.65 600 SMV1144 14.65 17.95 10.4 6.1 1.50 1.65 2.46 2.96 0.65 500 SMV1145 25.50 31.20 18.1 10.6 1.50 1.65 2.50 3.00 0.60 300 SMV1146 37.80 46.20 26.4 15.5 1.50 1.65 2.50 3.00 0.60 200 SMV1147 54.60 66.70 38.6 22.6 1.50 1.65 2.50 3.00 0.55 150 SMV1148 62.00 76.00 44.1 25.2 1.50 1.65 2.50 3.00 0.50 150 Reverse Voltage VR (IR = 10 µA): 12 V Reverse Current IR (VR = 9.6 V): 20 nA Typical Performance Data 0.8 100.0 SMV1148 SMV1142 SMV1143 RS (Ω) Capacitance (pF) SMV1147 SMV1146 10.0 SMV1145 SMV1146 SMV1145 SMV1144 SMV1147 SMV1143 SMV1148 SMV1142 0.4 1.0 4.0 2.0 6.0 0 8.0 1 2 3 4 5 Reverse Voltage (V) Reverse Voltage (V) Capacitance vs. Reverse Voltage Series Resistance vs. Reverse Voltage @ 500 MHz 5 12 4 10 Percentage Change (%) Percentage Change (%) 0 3 VR = 1 V 2 1 0 -1 -2 VR = 4 V 8 6 4 2 0 -2 -4 -6 -8 -3 -40 2 SMV1144 0.6 -20 0 20 40 60 80 -40 -20 0 20 40 60 80 Temperature (˚C) Temperature (˚C) Relative Capacitance Change vs. Temperature Relative Series Resistance Change vs. Temperature Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A Hyperabrupt Junction Tuning Varactors SMV1142–SMV1148 Typical Capacitance Values SMV1142 SMV1143 SMV1144 SMV1145 SMV1146 SMV1147 SMV1148 VR (V) CT (pF) CT (pF) CT (pF) CT (pF) CT (pF) CT (pF) CT (pF) 0.0 13.38 18.99 24.01 41.81 61.13 89.52 104.71 0.5 10.70 15.18 19.18 33.38 48.97 71.44 83.27 1.0 9.10 12.90 16.30 28.35 41.43 60.65 70.48 1.5 7.98 11.30 14.28 24.82 36.26 53.07 61.48 2.0 7.12 10.08 12.73 22.11 32.30 47.27 54.56 2.5 6.42 9.08 11.46 19.91 29.08 42.55 48.92 3.0 5.83 8.24 10.40 18.06 26.37 38.58 44.13 3.5 5.32 7.51 9.48 16.45 24.01 35.12 39.97 4.0 4.86 6.87 8.66 15.02 21.92 32.06 36.29 4.5 4.45 6.29 7.93 13.73 20.04 29.31 32.99 5.0 4.09 5.76 7.26 12.57 18.34 26.81 30.03 5.5 3.75 5.29 6.66 11.53 16.81 24.57 27.43 6.0 3.46 4.87 6.13 10.60 15.45 22.58 25.22 6.5 3.21 4.51 5.68 9.81 14.30 20.89 23.43 7.0 3.00 4.22 5.31 9.17 13.36 19.52 22.06 7.5 2.84 3.99 5.02 8.66 12.62 18.43 21.01 8.0 2.72 3.82 4.80 8.29 12.07 17.63 20.22 8.5 2.63 3.69 4.63 7.99 11.63 16.98 19.61 9.0 2.56 3.58 4.50 7.76 11.30 16.50 19.12 9.5 2.50 3.50 4.40 7.58 11.03 16.10 18.72 10.0 2.45 3.43 4.31 7.43 10.81 15.78 18.38 10.5 2.41 3.37 4.24 7.30 10.62 15.50 18.11 11.0 2.36 3.31 4.15 7.15 10.40 15.18 17.87 11.5 2.35 3.28 4.15 7.10 10.33 15.08 17.65 12.0 2.32 3.25 4.08 7.02 10.21 14.90 17.43 SPICE Model PORT P_anode port = 1 IND LS L = LS RES RS R = RS DIODE Varactor_Diode AREA = 1 MODEL = Diode_Model MODE = nonlinear CAP CP C = CP PORT P_Cathode port = 2 DIODEM Diode_Model IS = 1.00e-14 RS = 0 N=1 TT = 0 CJO = CJO M=M VJ EG = 1.11 XTI = 3 KF =0 AF =1 FC = 0.5 BV = 0 IBV = 1e-3 ISR = 0 NR = 2 IKF = 0 NBV = 1 IBVL = 0 NBVL = 1 TBV1 = 0 TNOM = 27 FFE = 1 Part Number CJO (pF) VJ (V) M CP (pF) RS Ω) (Ω SMV1142 13.38 2.20 1.0 0 0.70 SMV1143 18.99 2.20 1.0 0 0.65 SMV1144 24.01 2.20 1.0 0 0.65 SMV1145 41.80 2.50 1.1 0 0.60 SMV1146 61.13 2.50 1.1 0 0.60 SMV1147 89.52 2.50 1.1 0 0.55 SMV1148 104.70 2.25 1.1 0 0.50 1. Values extracted from measured performance. 2. For package inductance (LS) refer to package type. 3. For more details refer to the “Varactor SPICE Models for RF VCO Applications” Application Note. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A 3 Hyperabrupt Junction Tuning Varactors SMV1142–SMV1148 SOD-323 SC-79 0.090 (2.30 mm) MIN. 0.108 (2.74 mm) MAX. 0.045 (1.15 mm) MIN. 0.053 (1.35 mm) MAX. 1 0.010 (0.25 mm) MIN. 0.016 (0.40 mm) MAX. 2 CATHODE INDICATOR CATHODE 0.006 (0.15 mm) MIN. INDICATOR 0.010 (0.25 mm) MIN. 0.014 (0.35 mm) MAX. 0.063 (1.60 mm) MIN. 0.071 (1.80 mm) MAX. 0.028 (0.70 mm) MIN. 0.035 (0.90 mm) MAX. 0.043 (1.10 mm) MIN. 0.051 (1.30 mm) MAX. 0.050 (1.25 mm) MAX. 0.004 (0.10 mm) MAX. 0.010 (0.25 mm) MIN. 2 0.060 (1.50 mm) MIN. 0.067 (1.70 mm) MAX. 0.008 (0.20 mm) NOM. 0.006 (0.15 mm) TYP. 1 0.020 (0.50 mm) MIN. 0.028 (0.70 mm) MAX. 10˚ MAX. 0.003 (0.07 mm) MIN. 0.008 (0.20 mm) MAX. 10˚ MAX. 4 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A